Algebraic order and the Berezinskii-Kosterlitz-Thouless transition in an exciton-polariton gas

Abstract

We observe quasi-long range coherence in a two-dimensional condensate of exciton-polaritons. Our measurements are the first to confirm that the spatial correlation algebraically decays with a slow power-law, whose exponent quantitatively behaves as predicted by the Berezinskii-Kosterlitz-Thouless theory. The exciton-polaritons are created by non-resonant optical pumping of a micro-cavity sample with embedded GaAs quantum-wells at liquid helium temperature. Michelson interference is used to measure the coherence of the photons emitted by decaying exciton-polaritons.

References in corpus (8)

• Observation of Superfluidity of Polaritons in Semiconductor Microcavities
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• Quantum-fluid dynamics of microcavity polaritons
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Cited by in corpus (37)

• Exciton-polariton condensates
• Keldysh Field Theory for Driven Open Quantum Systems
• Topological order and equilibrium in a condensate of exciton-polaritons
• Vortex and half-vortex dynamics in a spinor quantum fluid of interacting polaritons
• Unstable and stable regimes of polariton condensation
• Dynamical critical exponents in driven-dissipative quantum systems
• Landau-Peierls instability in a Fulde-Ferrell type inhomogeneous chiral condensed phase
• Universality in driven open quantum matter
• Electrodynamic duality and vortex unbinding in driven-dissipative condensates
• Temporal coherence of one-dimensional non-equilibrium quantum fluids
• Non-equilibrium fixed points of coupled Ising models
• Finite-temperature quantum fluctuations in two-dimensional Fermi superfluids
• Kibble-Zurek mechanism in driven-dissipative systems crossing a non-equilibrium phase transition
• Spatiotemporal coherence of non-equilibrium multimode photon condensates
• Tuning across Universalities with a Driven Open Condensate
• First-order spatial coherence measurements in a thermalized two-dimensional photonic quantum gas
• Low-energy collective oscillations and Bogoliubov sound in an exciton-polariton condensate
• $BKT$ transitions in classical and quantum long-range systems
• Phase ordering kinetics of a nonequilibrium exciton-polariton condensate
• Interplay of spin waves and vortices in the 2D XY model at small vortex-core energy
• Spatial and Temporal Coherence in Strongly Coupled Plasmonic Bose-Einstein Condensates
• Photoluminescence and gain/absorption spectra of a driven-dissipative electron-hole-photon condensate
• Emergent Kardar-Parisi-Zhang phase in quadratically driven condensates
• Chiral pair fluctuations for the inhomogeneous chiral transition
• Exciton-Polariton Trapping and Potential Landscape Engineering
• Spatiotemporal scaling of two-dimensional nonequilibrium exciton-polariton systems with weak interactions
• Effective equilibrium picture in $xy-$model with exponentially correlated noise
• Evolution of Cooper pairs with zero-center-of-mass momentum and their first-order correlation function in a two-dimensional ultracold Fermi gas near the observed Berezinskii-Kosterlitz-Thouless transition
• Clustering and phase transitions in a 2D superfluid with immiscible active impurities
• Spatial correlation of two-dimensional Bosonic multi-mode condensates
• Berezinskii-Kosterlitz-Thouless phase transition with Rabi-coupled bosons
• Non-stationary dynamics and dissipative freezing in squeezed superradiance
• Coherence of a non-equilibrium polariton condensate across the interaction-mediated phase transition
• Periodic quenches across the Berezinskii-Kosterlitz-Thouless phase transition
• Simulating the Berezinskii-Kosterlitz-Thouless Transition with Complex Langevin
• Berezinskii-Kosterlitz-Thouless phase transitions with long-range couplings
• Emergent Berezinskii-Kosterlitz-Thouless deconfinement in super-Coulombic plasmas