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Soh JH, Jansen TLC, Palacino-González E. Controlling the nonadiabatic dynamics of the charge-transfer process with chirped pulses: Insights from a double-pump time-resolved fluorescence spectroscopy scheme. J Chem Phys 2024; 160:024110. [PMID: 38193559 DOI: 10.1063/5.0177073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024] Open
Abstract
The manipulation of the ultrafast quantum dynamics of a molecular system can be achieved through the application of tailored light fields. This has been done in many ways in the past. In our present investigation, we show that it is possible to exert specific control over the nonadiabatic dynamics of a generic model system describing ultrafast charge-transfer within a condensed dissipative environment by using frequency-chirped pulses. By adjusting the external photoexcitation conditions, such as the chirp parameter, we show that the final population of the excitonic and charge-transfer states can be significantly altered, thereby influencing the elementary steps controlling the transfer process. In addition, we introduce an excitation scheme based on double-pump time-resolved fluorescence spectroscopy using chirped-pulse excitations. Here, our findings reveal that chirped excitations enhance the vibrational system dynamics as evidenced by the simulated spectra, where a substantial signal intensity dependence on the chirp is observed. Our simulations show that chirped pulses are a promising tool for steering the dynamics of the charge-transfer process toward a desired target outcome.
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Affiliation(s)
- Jia Hao Soh
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - Thomas L C Jansen
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - Elisa Palacino-González
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
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2
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Choi EH, Lee Y, Heo J, Ihee H. Reaction dynamics studied via femtosecond X-ray liquidography at X-ray free-electron lasers. Chem Sci 2022; 13:8457-8490. [PMID: 35974755 PMCID: PMC9337737 DOI: 10.1039/d2sc00502f] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/06/2022] [Indexed: 02/04/2023] Open
Abstract
X-ray free-electron lasers (XFELs) provide femtosecond X-ray pulses suitable for pump–probe time-resolved studies with a femtosecond time resolution. Since the advent of the first XFEL in 2009, recent years have witnessed a great number of applications with various pump–probe techniques at XFELs. Among these, time-resolved X-ray liquidography (TRXL) is a powerful method for visualizing structural dynamics in the liquid solution phase. Here, we classify various chemical and biological molecular systems studied via femtosecond TRXL (fs-TRXL) at XFELs, depending on the focus of the studied process, into (i) bond cleavage and formation, (ii) charge distribution and electron transfer, (iii) orientational dynamics, (iv) solvation dynamics, (v) coherent nuclear wavepacket dynamics, and (vi) protein structural dynamics, and provide a brief review on each category. We also lay out a plausible roadmap for future fs-TRXL studies for areas that have not been explored yet. Femtosecond X-ray liquidography using X-ray free-electron lasers (XFELs) visualizes various aspects of reaction dynamics.![]()
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Affiliation(s)
- Eun Hyuk Choi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- KI for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Advanced Reaction Dynamics, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Yunbeom Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- KI for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Advanced Reaction Dynamics, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Jun Heo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- KI for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Advanced Reaction Dynamics, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Hyotcherl Ihee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- KI for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Advanced Reaction Dynamics, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
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3
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Cheng A, Zeng H, Chen S, Chen R. d'Alembert-Schrödinger hybrid simulation for laser-induced multiquantum state transitions in a three-dimensional artificial atom. OPTICS LETTERS 2019; 44:4399-4402. [PMID: 31465411 DOI: 10.1364/ol.44.004399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, a d'Alembert-Schrödinger hybrid method is proposed to analyze the transient interaction between the incident electromagnetic control pulse and the electron. This hybrid method is based on the d'Alembert equation, which describes the propagation of the electromagnetic field and the time-dependent Schrödinger equation, which describes the action of the electron. Moreover, the finite-difference time-domain method is used to solve those equations. In our simulation, using the presented hybrid equations and the control equation of the quantum state, a scheme is presented to design laser pulses to control discrete quantum states in a three-dimensional artificial atom model. Excitingly, the laser pulses have been successfully designed for the perfect four quantum states' transition for the first time. With that, the spatiotemporal distribution for the probability density of an electron wave packet is showed in detail to describe the laser-induced transition process of quantum states.
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Lavigne C, Brumer P. Interfering resonance as an underlying mechanism in the adaptive feedback control of radiationless transitions: Retinal isomerization. J Chem Phys 2017; 147:114107. [PMID: 28938828 DOI: 10.1063/1.5003389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Control of molecular processes via adaptive feedback often yields highly structured laser pulses that have eluded physical explanation. By contrast, coherent control approaches propose physically transparent mechanisms but are not readily visible in experimental results. Here, an analysis of a condensed phase adaptive feedback control experiment on retinal isomerization shows that it manifests a quantum interference based coherent control mechanism: control via interfering resonances. The result promises deep insight into the physical basis for the adaptive feedback control of a broad class of bound state processes.
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Affiliation(s)
- Cyrille Lavigne
- Chemical Physics Theory Group, Department of Chemistry, and Center for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Paul Brumer
- Chemical Physics Theory Group, Department of Chemistry, and Center for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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5
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Thompson JV, Zhokhov PA, Springer MM, Traverso AJ, Yakovlev VV, Zheltikov AM, Sokolov AV, Scully MO. Amplitude concentration in a phase-modulated spectrum due to femtosecond filamentation. Sci Rep 2017; 7:43367. [PMID: 28266540 PMCID: PMC5339899 DOI: 10.1038/srep43367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/23/2017] [Indexed: 11/24/2022] Open
Abstract
We present a method by which the spectral intensity of an ultrafast laser pulse can be accumulated at selected frequencies by a controllable amount. Using a 4-f pulse shaper we modulate the phase of the frequency components of a femtosecond laser. By inducing femtosecond filamentation with the modulated pulse, we can concentrate the spectral amplitude of the pulse at various frequencies. The phase mask applied by the pulse shaper determines the frequencies for which accumulation occurs, as well as the intensity of the spectral concentration. This technique provides a way to obtain pulses with adjustable amplitude using only phase modulation and the nonlinear response of a medium. This provides a means whereby information which is encoded into spectral phase jumps may be decoded into measurable spectral intensity spikes.
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Affiliation(s)
| | - P. A. Zhokhov
- Texas A&M University, College Station, TX, 77843, USA
| | | | | | | | - A. M. Zheltikov
- Texas A&M University, College Station, TX, 77843, USA
- M.V. Lomonosov Moscow State University, Physics Department, International Laser Center, 119992 Moscow, Russia
| | - A. V. Sokolov
- Texas A&M University, College Station, TX, 77843, USA
- Baylor University, Waco, TX, 76798, USA
| | - M. O. Scully
- Texas A&M University, College Station, TX, 77843, USA
- Baylor University, Waco, TX, 76798, USA
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6
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Quantum Control of Population Transfer and Vibrational States via Chirped Pulses in Four Level Density Matrix Equations. APPLIED SCIENCES-BASEL 2016. [DOI: 10.3390/app6110351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Domingue SR, Bartels RA. Nonlinear fiber amplifier with tunable transform limited pulse duration from a few 100 to sub-100-fs at watt-level powers. OPTICS LETTERS 2014; 39:359-362. [PMID: 24562146 DOI: 10.1364/ol.39.000359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report a fiber amplifier system with an output transform limited pulse duration that is broadly tunable from 400 to 60 fs. We produce <100 fs pulses with >200 kW of peak power by compensating a significant amount of third-order dispersion. The spectral noise characteristics are also investigated to insure highly stable supercontinuum generation.
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Mooney J, Saari JI, Myers Kelley A, Krause MM, Walsh BR, Kambhampati P. Control of Phonons in Semiconductor Nanocrystals via Femtosecond Pulse Chirp-Influenced Wavepacket Dynamics and Polarization. J Phys Chem B 2013; 117:15651-8. [DOI: 10.1021/jp406323f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jonathan Mooney
- Department
of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Jonathan I. Saari
- Department
of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Anne Myers Kelley
- Chemistry
and Chemical Biology, University of California at Merced, Merced, California, United States
| | - Michael M. Krause
- Department
of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Brenna R. Walsh
- Department
of Chemistry, McGill University, Montreal, Quebec, Canada
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9
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Recent Developments in Experimental Techniques for Measuring Two Pulses Simultaneously. APPLIED SCIENCES-BASEL 2013. [DOI: 10.3390/app3010299] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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10
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NIU KAI, DONG LIQING, CONG SHULIN. SELECTIVE EXCITATION OF HIGH VIBRATIONAL STATES OF HYDROGEN FLUORIDE IN A THERMAL ENVIRONMENT BY ULTRAFAST INFRARED LASER PULSES. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2011. [DOI: 10.1142/s0219633610005761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The selective excitation of the high ground vibrational state of rotationless HF in an unobserved quasi-resonant thermal environment under the control of a single pulse and pulse train is studied using the reduced density matrix theory. It is shown that the pulse train can enhance the population transfer probability. The numerical results reveal that the vibrational relaxation process is affected by the distribution of the environment frequency and the molecule–environment coupling intensity. The effects of the molecule–environment coupling parameter and the overlapping pulses on the population of the target state of HF are also discussed.
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Affiliation(s)
- KAI NIU
- Department of Physics, Dalian University of Technology, Dalian 116024, P. R. China
- Division of Physics and Applied Physics and Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - LI-QING DONG
- Division of Physics and Applied Physics and Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - SHU-LIN CONG
- Department of Physics, Dalian University of Technology, Dalian 116024, P. R. China
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11
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A single isolated sub-50 attosecond pulse generation with a two-color laser field by a frequency-chirping technique. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Debnarova A, Techert S, Schmatz S. Ab initio studies of ultrafast x-ray scattering of the photodissociation of iodine. J Chem Phys 2011; 133:124309. [PMID: 20886934 DOI: 10.1063/1.3475567] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We computationally examine various aspects of the reaction dynamics of the photodissociation and recombination of molecular iodine. We use our recently proposed formalism to calculate time-dependent x-ray scattering signal changes from first principles. Different aspects of the dynamics of this prototypical reaction are studied, such as coherent and noncoherent processes, features of structural relaxation that are periodic in time versus nonperiodic dissociative processes, as well as small electron density changes caused by electronic excitation, all with respect to x-ray scattering. We can demonstrate that wide-angle x-ray scattering offers a possibility to study the changes in electron densities in nonperiodic systems, which render it a suitable technique for the investigation of chemical reactions from a structural dynamics point of view.
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Affiliation(s)
- Andrea Debnarova
- Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Am Faβberg 11, Germany
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13
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Ruetzel S, Stolzenberger C, Dimler F, Tannor DJ, Brixner T. Adaptive coherent control using the von Neumann basis. Phys Chem Chem Phys 2011; 13:8627-36. [DOI: 10.1039/c0cp02318c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Ruetzel S, Stolzenberger C, Fechner S, Dimler F, Brixner T, Tannor DJ. Molecular quantum control landscapes in von Neumann time-frequency phase space. J Chem Phys 2010; 133:164510. [DOI: 10.1063/1.3495950] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Zhang S, Zhang H, Yang Y, Jia T, Wang Z, Sun Z. Coherent enhancement in two-photon fluorescence in molecular system induced by phase-jump modulated pulse. J Chem Phys 2010; 132:094503. [PMID: 20210401 DOI: 10.1063/1.3327843] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Shian Zhang
- Department of Physics and State Key Laboratory of Precision Spectroscopy, East China Normal University, 200062 Shanghai, People's Republic of China
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van der Walle P, Offerhaus H, Herek J, Jafarpour A. Tailoring a coherent control solution landscape by linear transforms of spectral phase basis. OPTICS EXPRESS 2010; 18:973-987. [PMID: 20173919 DOI: 10.1364/oe.18.000973] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Finding an optimal phase pattern in a multidimensional solution landscape becomes easier and faster if local optima are suppressed and contour lines are tailored towards closed convex patterns. Using wideband second harmonic generation as a coherent control test case, we show that a linear combination of spectral phase basis functions can result in such improvements and also in separable phase terms, each of which can be found independently. The improved shapes are attributed to a suppressed nonlinear shear, changing the relative orientation of contour lines. The first order approximation of the process shows a simple relation between input and output phase profiles, useful for pulse shaping at ultraviolet wavelengths.
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Affiliation(s)
- Peter van der Walle
- Optical Sciences group, MESA + Institute for Nanotechnology, University of Twente, The Netherlands
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17
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Kirrander A, Fielding HH, Jungen C. Optical phase and the ionization-dissociation dynamics of excited H2. J Chem Phys 2010; 132:024313. [DOI: 10.1063/1.3285710] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Iijima H, Nagai R, Nishimori N, Hajima R, Minehara EJ. Frequency-resolved optical gating system with a tellurium crystal for characterizing free-electron lasers in the wavelength range of 10-30 microm. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2009; 80:123106. [PMID: 20059130 DOI: 10.1063/1.3265318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A second-harmonic generation frequency-resolved optical gating (SHG-FROG) system has been developed for the complete characterization of laser pulses in the wavelength range of 10-30 microm. A tellurium crystal is used so that spectrally resolved autocorrelation signals with a good signal-to-noise ratio are obtained. Pulses (wavelength approximately 22 microm) generated from a free-electron laser are measured by the SHG-FROG system. The SHG intensity profile and the spectrum obtained by FROG measurements are well consistent with those of independent measurements of the pulse length and spectrum. The pulse duration and spectral width determined from the FROG trace are 0.6 ps and 5.2 THz at full width half maximum, respectively.
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Affiliation(s)
- Hokuto Iijima
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
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19
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Plenge J, Wirsing A, Raschpichler C, Meyer M, Rühl E. Chirped pulse multiphoton ionization of nitrogen: Control of selective rotational excitation in N2+(B Σ2u+). J Chem Phys 2009; 130:244313. [DOI: 10.1063/1.3158603] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Abstract
This review summarizes progress in coherent control as well as relevant recent achievements, highlighting, among several different schemes of coherent control, wave-packet interferometry (WPI). WPI is a fundamental and versatile scenario used to control a variety of quantum systems with a sequence of short laser pulses whose relative phase is finely adjusted to control the interference of electronic or nuclear wave packets (WPs). It is also useful in retrieving quantum information such as the amplitudes and phases of eigenfunctions superposed to generate a WP. Experimental and theoretical efforts to retrieve both the amplitude and phase information are recounted. This review also discusses information processing based on the eigenfunctions of atoms and molecules as one of the modern and future applications of coherent control. The ultrafast coherent control of ultracold atoms and molecules and the coherent control of complex systems are briefly discussed as future perspectives.
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Affiliation(s)
- Kenji Ohmori
- Institute for Molecular Science, National Institutes of Natural Sciences; The Graduate University for Advanced Studies (SOKENDAI); and CREST, Japan Science and Technology Agency, Myodaiji, Okazaki 444-8585, Japan
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21
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Førre M, Barmaki S, Bachau H. Nuclear interference in the Coulomb explosion of H2+ in short vuv laser fields. PHYSICAL REVIEW LETTERS 2009; 102:123001. [PMID: 19392272 DOI: 10.1103/physrevlett.102.123001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Indexed: 05/27/2023]
Abstract
We report ab initio calculations of H2+ three-photon ionization by vuv/fs 10(12) W/cm(2) laser pulses including electronic and vibrational degrees of freedom in the Born-Oppenheimer approximation. The initial nuclear wave packet of H2+(1ssigma(g)) is assumed to be equal to the H2 vibrational ground state. For pulse durations longer than 10 fs, we find an unexpected modulation in the kinetic energy spectra of the correlated fragments (H++H+). It is shown that the structures in the spectra originate from the interference between a direct and a sequential dissociation channel. While the first channel is open even for relatively short pulses, the sequential one only opens for pulse durations longer than 10 fs. In the latter case we show that interference between the two components results in a modulated kinetic energy release spectrum in the dissociation channel 3dsigma(g), which is reflected in the ionization spectrum.
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Affiliation(s)
- Morten Førre
- Centre Lasers Intenses et Applications, Université Bordeaux 1-CNRS-CEA, 351 Cours de la Libération, F-33405 Talence Cedex, France
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Golan B, Fradkin Z, Kopnov G, Oron D, Naaman R. Controlling two-photon photoemission using polarization pulse shaping. J Chem Phys 2009; 130:064705. [DOI: 10.1063/1.3077123] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Pflaumer AR, Bryant EA, Messina M. Vibrational enhancement of H atom transfer near an enzyme active site: An inverse classical control study. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Tiwari AK, Møller KB, Henriksen NE. Controlling the spreading of wave packets of a dissociating molecule. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.10.093] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Fainberg BD, Gorbunov VA. Adiabatic Passage in a Three-State System with Non-Markovian Relaxation: The Role of Excited-State Absorption and Two-Exciton Processes. J Phys Chem A 2007; 111:9560-9. [PMID: 17803286 DOI: 10.1021/jp0728611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The influence of excited-state absorption (ESA) and two-exciton processes on a coherent population transfer with intense ultrashort chirped pulses in molecular systems in solution has been studied. A unified treatment of adiabatic rapid passage (ARP) in such systems has been developed using a three-state electronic system with relaxation treated as a diffusion on electronic potential energy surfaces. We have shown that ESA has a profound effect on coherent population transfer in large molecules that necessitates a more accurate interpretation of experimental data. A simple and physically clear model for ARP in molecules with three electronic states in solution has been developed by extending the Landau-Zener calculations putting in a third level to random crossing of levels. A method for quantum control of two-exciton states in molecular complexes has been proposed.
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Affiliation(s)
- B D Fainberg
- Faculty of Sciences, Physics Department, Holon Institute of Technology, 52 Golomb Street, Holon 58102, Israel.
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27
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Wynne K, Hochstrasser RM. Coherence and Adiabaticity in Ultrafast Electron Transfer. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141663.ch4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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28
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Mukamel S, Ciordas-Ciurdariu C, Khidekel V. Time-Frequency and Coordinate-Momentum Wigner Wavepackets in Nonlinear Spectroscopy. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141601.ch14] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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29
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Baumert T, Helbing J, Gerber G. Coherent Control With Femtosecond Laser Pulses. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141601.ch2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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30
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Perspectives on the Control of Quantum many-body Dynamics: Application to Chemical Reactions. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141601.ch8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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31
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do N Varella MT, Arasaki Y, Ushiyama H, Takatsuka K, Wang K, McKoy V. Real-time observation of intramolecular proton transfer in the electronic ground state of chloromalonaldehyde: Anab initiostudy of time-resolved photoelectron spectra. J Chem Phys 2007; 126:054303. [PMID: 17302473 DOI: 10.1063/1.2432119] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The authors report on studies of time-resolved photoelectron spectra of intramolecular proton transfer in the ground state of chloromalonaldehyde, employing ab initio photoionization matrix elements and effective potential surfaces of reduced dimensionality, wherein the couplings of proton motion to the other molecular vibrational modes are embedded by averaging over classical trajectories. In the simulations, population is transferred from the vibrational ground state to vibrationally hot wave packets by pumping to an excited electronic state and dumping with a time-delayed pulse. These pump-dump-probe simulations demonstrate that the time-resolved photoelectron spectra track proton transfer in the electronic ground state well and, furthermore, that the geometry dependence of the matrix elements enhances the tracking compared with signals obtained with the Condon approximation. Photoelectron kinetic energy distributions arising from wave packets localized in different basins are also distinguishable and could be understood, as expected, on the basis of the strength of the optical couplings in different regions of the ground state potential surface and the Franck-Condon overlaps of the ground state wave packets with the vibrational eigenstates of the ion potential surface.
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Affiliation(s)
- Márcio T do N Varella
- Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Komaba, Tokyo 153-8902, Japan
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Gühr M, Bargheer M, Fushitani M, Kiljunen T, Schwentner N. Ultrafast dynamics of halogens in rare gas solids. Phys Chem Chem Phys 2007; 9:779-801. [PMID: 17287873 DOI: 10.1039/b609058n] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We perform time resolved pump-probe spectroscopy on small halogen molecules ClF, Cl2, Br2, and I2 embedded in rare gas solids (RGS). We find that dissociation, angular depolarization, and the decoherence of the molecule is strongly influenced by the cage structure. The well ordered crystalline environment facilitates the modelling of the experimental angular distribution of the molecular axis after the collision with the rare gas cage. The observation of many subsequent vibrational wave packet oscillations allows the construction of anharmonic potentials and indicate a long vibrational coherence time. We control the vibrational wave packet revivals, thereby gaining information about the vibrational decoherence. The coherence times are remarkable larger when compared to the liquid or high pressure gas phase. This fact is attributed to the highly symmetric molecular environment of the RGS. The decoherence and energy relaxation data agree well with a perturbative model for moderate vibrational excitation and follow a classical model in the strong excitation limit. Furthermore, a wave packet interferometry scheme is applied to deduce electronic coherence times. The positions of those cage atoms, excited by the molecular electronic transitions are modulated by long living coherent phonons of the RGS, which we can probe via the molecular charge transfer states.
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Affiliation(s)
- M Gühr
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195, Berlin, Germany
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33
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Debnarova A, Techert S, Schmatz S. Ab initiotreatment of time-resolved x-ray scattering: Application to the photoisomerization of stilbene. J Chem Phys 2006; 125:224101. [PMID: 17176128 DOI: 10.1063/1.2400231] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this work we present a general theoretical outline for calculating time-dependent x-ray scattering signal changes from first principles. We derive a formalism for the description of atom-atom correlation functions as Fourier transforms of quantum-chemically calculated electron densities and show their proportionality to the molecular form factor. The formalism derived in this work is applied to the photoisomerization of stilbene. We can demonstrate that wide-angle x-ray scattering offers a possibility to study the changes in electron densities in nonperiodic complex systems, which renders it a suitable technique for the investigation of (bio)organic systems.
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Affiliation(s)
- Andrea Debnarova
- Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
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34
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Vogt G, Nuernberger P, Brixner T, Gerber G. Femtosecond pump–shaped-dump quantum control of retinal isomerization in bacteriorhodopsin. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.11.028] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Hauer J, Buckup T, Motzkus M. Enhancement of molecular modes by electronically resonant multipulse excitation: Further progress towards mode selective chemistry. J Chem Phys 2006; 125:61101. [PMID: 16942265 DOI: 10.1063/1.2243273] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We show that molecular vibrations induced by resonant excitation pulses can be enhanced by pulse trains, compared to Fourier-limited pulses of equal pulse energy. As a proof-of-principle, a low frequency mode of Nile Blue at 600 cm(-1) is observed and amplified in a pump and probe experiment. In addition to previous experiments in our group, an increased population transfer to the excited electronic state is identified as an important element of the underlying physical mechanism. These results suggest an enhancement on the level of individual molecules rather than a macroscopic effect.
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Affiliation(s)
- Jürgen Hauer
- Physikalische Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35043 Marburg, Germany
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36
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Gelman D, Kosloff R. Minimizing broadband excitation under dissipative conditions. J Chem Phys 2005; 123:234506. [PMID: 16392930 DOI: 10.1063/1.2136155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Optimal control theory is employed for the task of minimizing the excited-state population of a dye molecule in solution. The spectrum of the excitation pulse is contained completely in the absorption band of the molecule. Only phase control is studied which is equivalent to optimizing the transmission of the pulse through the medium. The molecular model explicitly includes two electronic states and a single vibrational mode. The other degrees of freedom are classified as bath modes. The surrogate Hamiltonian method is employed to incorporate these bath degrees of freedom. Their influence can be classified as electronic dephasing and vibrational relaxation. In accordance with experimental results, minimal excitation is associated with a negatively chirped pulses. Optimal pulses with more complex transient structure are found to be superior to linearly chirped pulses. The difference is enhanced when the fluence is increased. The improvement degrades when dissipative effects become more dominant.
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Affiliation(s)
- David Gelman
- Department of Physical Chemistry and the Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel.
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37
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Malkmus S, Dürr R, Sobotta C, Pulvermacher H, Zinth W, Braun M. Chirp Dependence of Wave Packet Motion in Oxazine 1. J Phys Chem A 2005; 109:10488-92. [PMID: 16834303 DOI: 10.1021/jp054462g] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The motion of vibrational wave packets in the system oxazine 1 in methanol is investigated by spectrally resolved transient absorption spectroscopy. The spectral properties of the probe pulse from 600 to 700 nm were chosen to cover the overlap region where ground-state bleach and stimulated emission signals are detected. The spectral phase of the pump pulse was manipulated by a liquid crystal display based pulse-shaping setup. Chirped excitation pulses of negative and positive chirp can be used to excite vibrational modes predominantly in the ground or excited state, respectively. To distinguish the observed wave packets in oxazine 1 moving in the ground or excited state, spectrally resolved transient absorption experiments are performed for various values of the linear chirp of the pump pulses. The amplitudes of the wave packet motion show an asymmetric behavior with an optimum signal for a negative chirp of -0.75 +/- 0.2 fs/nm, which indicates that predominantly ground-state wave packets are observed.
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Affiliation(s)
- Stephan Malkmus
- Department für Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, D-80538 Munich, Germany
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38
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Abstract
This critical review is intended to provide an overview of the state-of-the-art in femtosecond laser technology and recent applications in ultrafast gas phase chemical dynamics. Although "femtochemistry" is not a new subject, there have been some tremendous advances in experimental techniques during the last few years. Time-resolved photoelectron spectroscopy and ultrafast electron diffraction have enabled us to observe molecular dynamics through a wider window. Attosecond laser sources, which have so far only been exploited in atomic physics, have the potential to probe chemical dynamics on an even faster timescale and observe the motions of electrons. Huge progress in pulse shaping and pulse characterisation methodology is paving the way for exciting new advances in the field of coherent control.
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Affiliation(s)
- R E Carley
- Department of Chemistry, University College London, London WC1H 0AJ, UK
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39
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Bonacić-Koutecký V, Mitrić R. Theoretical Exploration of Ultrafast Dynamics in Atomic Clusters: Analysis and Control. Chem Rev 2004; 105:11-66. [PMID: 15720151 DOI: 10.1021/cr0206925] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vlasta Bonacić-Koutecký
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany.
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40
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41
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Lohmüller T, Engel V, Beswick JA, Meier C. Fractional revivals in the rovibrational motion of I2. J Chem Phys 2004; 120:10442-9. [PMID: 15268072 DOI: 10.1063/1.1711809] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Motivated by pump-probe experiments of I(2) in a room-temperature sample, the detection of fractional revivals is investigated using full-dimensional quantum wave packet calculations. It is shown that the structures observed in the pump-probe signal depend sensitively on the probe parameters employed and that the observed signal reflects a particular phase effect between fractional revivals.
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Affiliation(s)
- T Lohmüller
- Institut für Physikalische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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42
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Manescu C, Krause JL, Møller KB, Henriksen NE. Suppressing the Spreading of Continuum Wave Packets via Chirped Laser Pulses. J Phys Chem A 2004. [DOI: 10.1021/jp049077q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Corneliu Manescu
- Quantum Theory Project, University of Florida, P.O. Box 118435, Gainesville, Florida 32611-8435, and Department of Chemistry, Building 207, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Jeffrey L. Krause
- Quantum Theory Project, University of Florida, P.O. Box 118435, Gainesville, Florida 32611-8435, and Department of Chemistry, Building 207, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Klaus B. Møller
- Quantum Theory Project, University of Florida, P.O. Box 118435, Gainesville, Florida 32611-8435, and Department of Chemistry, Building 207, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Niels E. Henriksen
- Quantum Theory Project, University of Florida, P.O. Box 118435, Gainesville, Florida 32611-8435, and Department of Chemistry, Building 207, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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Abstract
There has been much progress in the control of chemical reactions since methods of active control were first proposed by Brumer & Shapiro and by Tannor & Rice ten years ago. This chapter reviews both theoretical and experimental advances in the field. Control schemes based on quantum mechanical interference between competing paths and the manipulation of wave packets with tailored laser pulses are discussed. The theory of optimal control, the limitations of control theory applied to many-body dynamics, and the effects of constraints on the trajectory of the controlled observable are presented. Experimental progress in controlling the population of specific quantum states, in manipulating the dynamics of bound wave packets, and in the control of chemical reactions are reviewed, and current problems in the field are summarized.
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Affiliation(s)
- R J Gordon
- Department of Chemistry (m/c 111), University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL 60607-7061, USA.
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44
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Xu R, Yan Y, Ohtsuki Y, Fujimura Y, Rabitz H. Optimal control of quantum non-Markovian dissipation: Reduced Liouville-space theory. J Chem Phys 2004; 120:6600-8. [PMID: 15267552 DOI: 10.1063/1.1665486] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
An optimal control theory for open quantum systems is constructed containing non-Markovian dissipation manipulated by an external control field. The control theory is developed based on a novel quantum dissipation formulation that treats both the initial canonical ensemble and the subsequent reduced control dynamics. An associated scheme of backward propagation is presented, allowing the efficient evaluation of general optimal control problems. As an illustration, the control theory is applied to the vibration of the hydrogen fluoride molecule embedded in a non-Markovian dissipative medium. The importance of control-dissipation correlation is evident in the results.
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Affiliation(s)
- Ruixue Xu
- Open Laboratory of Bond-Selective Chemistry, University of Science and Technology of China, Hefei, China.
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45
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Dantus M, Lozovoy VV. Experimental Coherent Laser Control of Physicochemical Processes. Chem Rev 2004; 104:1813-59. [PMID: 15080713 DOI: 10.1021/cr020668r] [Citation(s) in RCA: 144] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marcos Dantus
- Department of Chemistry and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
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Abstract
Transient grating of a dye in liquid has been measured as a function of the electronic coherence period. A diffractive beam splitter and a pair of wedge prisms are implemented to achieve precise spatial phase overlap and interferometrically accurate control of the time delay between the pump pulses. As the electronic coherence period is varied, coherent interactions lead to an enhancement or loss of the sharp feature in the transient grating signal near time zero, which is usually called coherent spike. Sensitivity of the transient grating signal to the solvation process also changes by the coherence time delay. All the features can be accounted for by invoking third-order nonlinear response functions. Numerical simulations have been performed to corroborate our description. This work identifies a major source of the coherent spike in the transient grating and transient absorption experiments. In addition, it allows us to propose a method that measures the solvation function more efficiently than conventional transient grating technique does.
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Affiliation(s)
- June-Sik Park
- Division of Molecular and Life Sciences, Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784, Korea
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47
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Adelswärd A, Wallentowitz S. Quantum decoherence in the rotation of small molecules. ACTA ACUST UNITED AC 2004. [DOI: 10.1088/1464-4266/6/3/023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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Gühr M, Ibrahim H, Schwentner N. Controlling vibrational wave packet revivals in condensed phase: Dispersion and coherence for Br2in solid Ar. Phys Chem Chem Phys 2004. [DOI: 10.1039/b413635g] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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50
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Quantum-controlled color: chirp- and polarization-sensitive two-photon photochromism of spiropyrans in the solid phase. Chem Phys Lett 2003. [DOI: 10.1016/j.cplett.2003.09.093] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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