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Poonia AK, Mondal B, Beard MC, Nag A, Adarsh KV. Superfluorescence from Electron-Hole Plasma at Moderate Temperatures of 175 K. PHYSICAL REVIEW LETTERS 2024; 132:063803. [PMID: 38394562 DOI: 10.1103/physrevlett.132.063803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/12/2024] [Indexed: 02/25/2024]
Abstract
Superfluorescence, a cooperative coherent spontaneous emission, is of great importance to the understanding of many-body correlation in optical processes. Even though superfluorescence has been demonstrated in many diverse systems, it is hard to observe in electron-hole plasma (EHP) due to its rapid dephasing and hence needs strong magnetic fields or complex microcavities. Herein, we report the first experimental observation of superfluorescence from EHP up to a moderate temperature of 175 K without external stimuli in a coupled metal halide perovskite quantum dots film. The EHP exhibits macroscopic quantum coherence through spontaneous synchronization. The coherence of the excited state decays by superfluorescence, which is redshifted 40 meV from the spontaneous emission with a ∼1700 times faster decay rate and exhibits quadratic fluence dependence. Notably, the excited state population's delayed growth and abrupt decay, which are strongly influenced by the pump fluence and the Burnham-Chiao ringing, are the characteristics of the superfluorescence. Our findings will open up a new frontier for cooperative emission and light beam-based technologies.
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Affiliation(s)
- Ajay K Poonia
- Department of Physics, Indian Institute of Science Education and Research, Bhopal-462066, India
| | - Barnali Mondal
- Department of Chemistry, Indian Institute of Science Education and Research, Pune-411008, India
| | - Matthew C Beard
- Chemistry and Nanoscience Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Angshuman Nag
- Department of Chemistry, Indian Institute of Science Education and Research, Pune-411008, India
| | - K V Adarsh
- Department of Physics, Indian Institute of Science Education and Research, Bhopal-462066, India
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Barman B, Linn AG, O'Beirne AL, Holleman J, Garcia C, Mapara V, Reno JL, McGill SA, Turkowski V, Karaiskaj D, Hilton DJ. Superradiant emission in a high-mobility two-dimensional electron gas. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35. [PMID: 37075774 DOI: 10.1088/1361-648x/acce8c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/19/2023] [Indexed: 05/03/2023]
Abstract
We use terahertz time-domain spectroscopy to study gallium arsenide two-dimensional electron gas samples in external magnetic field. We measure cyclotron decay as a function of temperature from 0.4 to10Kand a quantum confinement dependence of the cyclotron decay time belowT0=1.2K. In the wider quantum well, we observe a dramatic enhancement in the decay time due to the reduction in dephasing and the concomitant enhancement of superradiant decay in these systems. We show that the dephasing time in 2DEG's depends on both the scatteringrateand also on the distribution of scattering angles.
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Affiliation(s)
- B Barman
- College of Innovation and Technology, University of Michigan-Flint, Flint, MI 48502, United States of America
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, United States of America
| | - A G Linn
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, United States of America
| | - A L O'Beirne
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, United States of America
| | - J Holleman
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 30201, United States of America
| | - C Garcia
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 30201, United States of America
| | - V Mapara
- Department of Physics, University of South Florida, Tampa, FL 33620, United States of America
| | - J L Reno
- Center for Integrated Nanotechnologies, Sandia National Laboratory, Albuquerque, NM 87185, United States of America
| | - S A McGill
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 30201, United States of America
| | - V Turkowski
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
| | - D Karaiskaj
- Department of Physics, University of South Florida, Tampa, FL 33620, United States of America
| | - D J Hilton
- Department of Physics, Baylor University, Waco, TX 76798-7316, United States of America
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He R, Rasmita A, Zhou L, Liang L, Cai X, Chen J, Cai H, Gao W, Liu X. Magnetically Tunable Spontaneous Superradiance from Mesoscopic Perovskite Emitter Clusters. J Phys Chem Lett 2023; 14:2627-2634. [PMID: 36888962 DOI: 10.1021/acs.jpclett.3c00135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Perovskite emitters are promising materials as next-generation optical sources due to their low fabrication cost and high quantum yield. In particular, the superradiant emission from a few coherently coupled perovskite emitters can be used to produce a bright entangled photon source. Here, we report the observation of superradiance from mesoscopic (<55) CsPbBr3 perovskite emitters, which have a much smaller ensemble size than the previously reported results (>106 emitters). The superradiance is spontaneously generated by off-resonance excitation and detected by time-resolved photoluminescence and second-order photon correlation measurements. We observed a remarkable magnetic tunability of the superradiant photon bunching, indicating a magnetic field-induced decoherence process. The experimental results can be well explained using a theoretical framework based on the microscopic master equation. Our findings shed light on the superradiance mechanism in perovskite emitters and enable low-cost quantum light sources based on perovskite.
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Affiliation(s)
- Ruihua He
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Abdullah Rasmita
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityRINGGOLD, Singapore 637371, Singapore
| | - Lei Zhou
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Liangliang Liang
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xiangbin Cai
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityRINGGOLD, Singapore 637371, Singapore
| | - Jiaye Chen
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Hongbing Cai
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityRINGGOLD, Singapore 637371, Singapore
- The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 639798, Singapore
| | - Weibo Gao
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityRINGGOLD, Singapore 637371, Singapore
- The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 639798, Singapore
- Centre for Quantum Technologies, National University of Singapore, Singapore 117543, Singapore
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore 138634, Singapore
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4
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Transient dual-energy lasing in a semiconductor microcavity. Sci Rep 2015; 5:15347. [PMID: 26477277 PMCID: PMC4609995 DOI: 10.1038/srep15347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/22/2015] [Indexed: 11/10/2022] Open
Abstract
We demonstrate sequential lasing at two well-separated energies in a highly photoexcited planar microcavity at room temperature. Two spatially overlapped lasing states with distinct polarization properties appear at energies more than 5 meV apart. Under a circularly polarized nonresonant 2 ps pulse excitation, a sub-10-ps transient circularly polarized high-energy (HE) state emerges within 10 ps after the pulse excitation. This HE state is followed by a pulsed state that lasts for 20–50 ps at a low energy (LE) state. The HE state is highly circularly polarized as a result of a spin-preserving stimulated process, while the LE state shows a significantly reduced circular polarization because of a diminishing spin imbalance.
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Lee W, Kiba T, Murayama A, Sartel C, Sallet V, Kim I, Taylor RA, Jho YD, Kyhm K. Temperature dependence of the radiative recombination time in ZnO nanorods under an external magnetic field of 6 T. OPTICS EXPRESS 2014; 22:17959-17967. [PMID: 25089415 DOI: 10.1364/oe.22.017959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The Temperature dependence of the exciton radiative decay time in ZnO nanorods has been investigated, which is associated with the density of states for the intra-relaxation of thermally excited excitons. The photoluminescence decay time was calibrated by using the photoluminescence intensity in order to obtain the radiative decay time. In the absence of an external magnetic field, we have confirmed that the radiative decay time increased with temperature in a similar manner to that seen in bulk material (∼ T1.5). Under an external magnetic field of 6 T parallel to the c-axis, we found that the power coefficient of the radiative decay time with temperature decreased (∼ T1.3) when compared to that in the absence of a magnetic field. This result can be attributed to an enhancement of the effective mass perpendicular to the magnetic field and a redshift of the center-of-mass exciton as a consequence of perturbation effects in the weak-field regime.
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Noe GT, Nojiri H, Lee J, Woods GL, Léotin J, Kono J. A table-top, repetitive pulsed magnet for nonlinear and ultrafast spectroscopy in high magnetic fields up to 30 T. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:123906. [PMID: 24387445 DOI: 10.1063/1.4850675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have developed a mini-coil pulsed magnet system with direct optical access, ideally suited for nonlinear and ultrafast spectroscopy studies of materials in high magnetic fields up to 30 T. The apparatus consists of a small coil in a liquid nitrogen cryostat coupled with a helium flow cryostat to provide sample temperatures down to below 10 K. Direct optical access to the sample is achieved with the use of easily interchangeable windows separated by a short distance of ~135 mm on either side of the coupled cryostats with numerical apertures of 0.20 and 0.03 for measurements employing the Faraday geometry. As a demonstration, we performed time-resolved and time-integrated photoluminescence measurements as well as transmission measurements on InGaAs quantum wells.
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Affiliation(s)
- G Timothy Noe
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Joseph Lee
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
| | - Gary L Woods
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
| | - Jean Léotin
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, Toulouse, France
| | - Junichiro Kono
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
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Xia M, Penty RV, White IH, Vasil'ev PP. Femtosecond superradiant emission in AlGaInAs quantum-well semiconductor laser structures. OPTICS EXPRESS 2012; 20:8755-8760. [PMID: 22513586 DOI: 10.1364/oe.20.008755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ultrashort superradiant pulse generation from a 1580 nm AlGaInAs multiple quantum-well (MQW) semiconductor structure has been experimentally demonstrated for the first time. Superradiance is confirmed by analyzing the evolution of the optical temporal waveforms and spectra. Superradiant trends and regimes are studied as a function of driving condition. An optical pulse train is obtained at 1580 nm wavelength, with pulse durations as short as 390 fs and pulse peak powers of 7.2 W.
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Affiliation(s)
- Mo Xia
- Centre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, UK
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