Quantum treatment of the Bose-Einstein condensation in nonequilibrium systems
| Autor: | Mikko Möttönen, Hugo Flayac, Ivan Savenko, Tapio Ala-Nissila |
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| Přispěvatelé: | Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2015 |
| Předmět: |
FOS: Physical sciences
Non-equilibrium thermodynamics 02 engineering and technology Bose-Einstein condensation Exciton-polaritons 01 natural sciences law.invention law Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Polariton non-equilibrium dynamics 010306 general physics Quantum quantum transport temporal coherence Boson exciton polaritons Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Thermal reservoir quantum jump 021001 nanoscience & nanotechnology Condensed Matter Physics 3. Good health Electronic Optical and Magnetic Materials stochastic wave function Quantum Gases (cond-mat.quant-gas) Quantum electrodynamics spatial coherence Condensed Matter - Quantum Gases Quantum Physics (quant-ph) 0210 nano-technology Bose–Einstein condensate Coherence (physics) |
| Zdroj: | Physical Review B. 92 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.92.115117 |
| Popis: | We develop an approach based on stochastic quantum trajectories for an incoherently pumped system of interacting bosons relaxing their energy in a thermal reservoir. Our approach enables the study of the versatile coherence properties of the system. We apply the model to exciton polaritons in a semiconductor microcavity. Our results demonstrate the onset of macroscopic occupation in the lowest-energy mode accompanied by the establishment of both temporal and spatial coherence. We show that temporal coherence exhibits a transition from a thermal to coherent statistics and the spatial coherence reveals off-diagonal long-range order. Comment: 5 Pages, 3 figures |
| Databáze: | OpenAIRE |
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