Quantum treatment of the Bose-Einstein condensation in non-equilibrium systems
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Physical Review B, Volume 92, issue 11, pp. 1-8
Abstract
We develop a fully quantum-mechanical approach, based on stochastic trajectories, for an incoherently pumped system of interacting bosons in contact with a thermal reservoir. It enables a complete characterization of coherence in such a multimode system. We apply our model to microcavity exciton polaritons interacting with acoustic phonons and observe the formation of a macroscopic occupation in the lowest-energy mode accompanied by the simultaneous establishment of temporal and spatial coherence. We describe the transition from thermal to coherent statistics together with the expected emergence of an off-diagonal long-range order.Description
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Flayac, H, Savenko, I, Möttönen, M & Ala-Nissila, T 2015, 'Quantum treatment of the Bose-Einstein condensation in non-equilibrium systems', Physical Review B, vol. 92, no. 11, 115117, pp. 1-8. https://doi.org/10.1103/PhysRevB.92.115117