Journal ArticleDOI
Exciton-polariton Bose-Einstein condensation
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In this article, the authors reviewed recent experiments and corresponding theoretical pictures based on the Gross-Pitaevskii equations and the Boltzmann kinetic simulations for a finite-size BEC of polaritons.Abstract:
In the past decade, a two-dimensional matter-light system called the microcavity exciton-polariton has emerged as a new promising candidate of Bose-Einstein condensation BEC in solids. Many pieces of important evidence of polariton BEC have been established recently in GaAs and CdTe microcavities at the liquid helium temperature, opening a door to rich many-body physics inaccessible in experiments before. Technological progress also made polariton BEC at room temperatures promising. In parallel with experimental progresses, theoretical frameworks and numerical simulations are developed, and our understanding of the system has greatly advanced. In this article, recent experiments and corresponding theoretical pictures based on the Gross-Pitaevskii equations and the Boltzmann kinetic simulations for a finite-size BEC of polaritons are reviewed.read more
Citations
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Journal ArticleDOI
Exciton–polariton condensates
TL;DR: A review of the physical properties of exciton-polariton condensates can be found in this article, where the authors examine topics such as the difference between polariton BEC, a polariton laser and a photon laser.
Journal ArticleDOI
Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard
Tingge Gao,Eliezer Estrecho,Konstantin Y. Bliokh,Timothy Chi Hin Liew,M. D. Fraser,Sebastian Brodbeck,Martin Kamp,Christian Schneider,Sven Höfling,Sven Höfling,Yoshihisa Yamamoto,Franco Nori,Yuri S. Kivshar,Andrew Truscott,Robert Dall,Elena A. Ostrovskaya +15 more
TL;DR: It is demonstrated that non-Hermiticity dramatically modifies the structure of modes and spectral degeneracies in exciton-polariton systems, and, therefore, will affect their quantum transport, localization and dynamical properties.
Journal ArticleDOI
Non-Hermitian Physics
TL;DR: In this article, a review of non-Hermitian classical and quantum physics can be found, with an overview of how diverse classical systems, ranging from photonics, mechanics, electrical circuits, acoustics to active matter, can be used to simulate non-hermitian wave physics.
Journal ArticleDOI
Keldysh field theory for driven open quantum systems.
TL;DR: In this article, the authors provide a systematic introduction to the open system Keldysh functional integral approach, which is the proper technical tool to accomplish a merger of quantum optics and many-body physics, and leverages the power of modern quantum field theory to driven open quantum systems.
Journal ArticleDOI
Nonlinear interactions in an organic polariton condensate.
TL;DR: An organic polariton condensate that exhibits nonlinear interactions at room-temperature is demonstrated and a superlinear power dependence, a power-dependent blueshift and the emergence of long-range spatial coherence resulting from polariton interactions are observed.
References
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Journal ArticleDOI
Ordering, metastability and phase transitions in two-dimensional systems
TL;DR: In this article, a new definition of order called topological order is proposed for two-dimensional systems in which no long-range order of the conventional type exists, and the possibility of a phase transition characterized by a change in the response of the system to an external perturbation is discussed in the context of a mean field type of approximation.
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Absence of Ferromagnetism or Antiferromagnetism in One- or Two-Dimensional Isotropic Heisenberg Models
N. D. Mermin,Herbert Wagner +1 more
TL;DR: In this paper, it is rigorously proved that at any nonzero temperature, a one- or two-dimensional isotropic spin-S$ Heisenberg model with finite-range exchange interaction can be neither ferromagnetic nor antiferromagnetic.
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Quantum Phase Transition From a Superfluid to a Mott Insulator in a Gas of Ultracold Atoms
TL;DR: This work observes a quantum phase transition in a Bose–Einstein condensate with repulsive interactions, held in a three-dimensional optical lattice potential, and can induce reversible changes between the two ground states of the system.
Bose-Einstein condensation in dilute gases
TL;DR: In this paper, a unified introduction to the physics of ultracold atomic Bose and Fermi gases for advanced undergraduate and graduate students, as well as experimentalists and theorists is provided.