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Hu W, Gustin I, Krauss TD, Franco I. Tuning and Enhancing Quantum Coherence Time Scales in Molecules via Light-Matter Hybridization. J Phys Chem Lett 2022; 13:11503-11511. [PMID: 36469838 PMCID: PMC9761670 DOI: 10.1021/acs.jpclett.2c02877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Protecting quantum coherences in matter from the detrimental effects introduced by its environment is essential to employ molecules and materials in quantum technologies and develop enhanced spectroscopies. Here, we show how dressing molecular chromophores with quantum light in the context of optical cavities can be used to generate quantum superposition states with tunable coherence time scales that are longer than those of the bare molecule, even at room temperature and for molecules immersed in solvent. For this, we develop a theory of decoherence rates for molecular polaritonic states and demonstrate that quantum superpositions that involve such hybrid light-matter states can survive for times that are orders of magnitude longer than those of the bare molecule while remaining optically controllable. Further, by studying these tunable coherence enhancements in the presence of lossy cavities, we demonstrate that they can be enacted using present-day optical cavities. The analysis offers a viable strategy to engineer and increase quantum coherence lifetimes in molecules.
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Affiliation(s)
- Wenxiang Hu
- Materials
Science Program, University of Rochester, Rochester, New York14627, United States
| | - Ignacio Gustin
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
| | - Todd D. Krauss
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
- Institute
of Optics, University of Rochester, Rochester, New York14627, United States
| | - Ignacio Franco
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
- Department
of Physics, University of Rochester, Rochester, New York14627, United States
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Higgins JS, Dardia AR, Ndife CJ, Lloyd LT, Bain EM, Engel GS. Leveraging Dynamical Symmetries in Two-Dimensional Electronic Spectra to Extract Population Transfer Pathways. J Phys Chem A 2022; 126:3594-3603. [PMID: 35621698 DOI: 10.1021/acs.jpca.2c01993] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We present a method to deterministically isolate population transfer kinetics from two-dimensional electronic spectroscopic signals. Central to this analysis is the characterization of how all possible subensembles of excited state systems evolve through the population time. When these dynamics are diagrammatically mapped by using double-sided Feynman pathways where population time dynamics are included, a useful symmetry emerges between excited state absorption and ground state bleach recovery dynamics of diagonal and below diagonal cross-peak signals. This symmetry allows removal of pathways from the spectra to isolate signals that evolve according to energy transfer kinetics. We describe a regression procedure to fit to energy transfer time constants and characterize the accuracy of the method in a variety of complex excited state systems using simulated two-dimensional spectra. Our results show that the method is robust for extracting ultrafast energy transfer in multistate excitonic systems, systems containing dark states that affect the signal kinetics, and systems with interfering vibrational relaxation pathways. This procedure can be used to accurately extract energy transfer kinetics from a wide variety of condensed phase systems.
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Affiliation(s)
- Jacob S Higgins
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Anna R Dardia
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Chidera J Ndife
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Lawson T Lloyd
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Elizabeth M Bain
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Gregory S Engel
- Department of Chemistry, The Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
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Analysis of Photosynthetic Systems and Their Applications with Mathematical and Computational Models. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10196821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In biological and life science applications, photosynthesis is an important process that involves the absorption and transformation of sunlight into chemical energy. During the photosynthesis process, the light photons are captured by the green chlorophyll pigments in their photosynthetic antennae and further funneled to the reaction center. One of the most important light harvesting complexes that are highly important in the study of photosynthesis is the membrane-attached Fenna–Matthews–Olson (FMO) complex found in the green sulfur bacteria. In this review, we discuss the mathematical formulations and computational modeling of some of the light harvesting complexes including FMO. The most recent research developments in the photosynthetic light harvesting complexes are thoroughly discussed. The theoretical background related to the spectral density, quantum coherence and density functional theory has been elaborated. Furthermore, details about the transfer and excitation of energy in different sites of the FMO complex along with other vital photosynthetic light harvesting complexes have also been provided. Finally, we conclude this review by providing the current and potential applications in environmental science, energy, health and medicine, where such mathematical and computational studies of the photosynthesis and the light harvesting complexes can be readily integrated.
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Marcus M, Knee GC, Datta A. Towards a spectroscopic protocol for unambiguous detection of quantum coherence in excitonic energy transport. Faraday Discuss 2020; 221:110-132. [DOI: 10.1039/c9fd00068b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We propose a witness for quantum coherence in EET that can be extracted directly from two-pulse pump–probe spectroscopy experimental data.
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Affiliation(s)
- Max Marcus
- Department of Physics
- University of Warwick
- Coventry
- UK
| | | | - Animesh Datta
- Department of Physics
- University of Warwick
- Coventry
- UK
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