Spatial Coherence of a Polariton Condensate

Abstract

We perform Young's double-slit experiment to study the spatial coherence properties of a two-dimensional dynamic condensate of semiconductor microcavity polaritons. The coherence length of the system is measured as a function of the pump rate, which confirms a spontaneous buildup of macroscopic coherence in the condensed phase. An independent measurement reveals that the position and momentum uncertainty product of the condensate is close to the Heisenberg limit. An experimental realization of such a minimum uncertainty wave packet of the polariton condensate opens a door to coherent matter-wave phenomena such as Josephson oscillation, superfluidity, and solitons in solid state condensate systems.

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• Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas
• Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
• Collective coherence in planar semiconductor microcavities
• Models of coherent exciton condensation
• Quantum degeneracy of microcavity polaritons
• Partially suppressed long-range order in the Bose-Einstein condensation of polaritons
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• Hybrid Boltzmann Gross-Pitaevskii Theory of Bose-Einstein Condensation and Superfluidity in Open Driven-Dissipative Systems
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• Spatial Coherence Properties of One-Dimensional Exciton-Polariton-Condensates
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• Dynamics of formation and decay of coherence in a polariton condensate
• Stability and spatial coherence of nonresonantly pumped exciton-polariton condensates
• Coherence expansion and polariton condensate formation in a semiconductor microcavity
• The spatial coherence of weakly interacting one-dimensional non-equilibrium Bosonic quantum fluids
• Polariton Condensation in a One-Dimensional Disordered Potential
• Optical manipulation of the wave function of quasiparticles in a solid
• Engineering spatial coherence in lattices of polariton condensates
• Spatiotemporal coherence of non-equilibrium multimode photon condensates
• Observation of long-lived polariton states in semiconductor microcavities across the parametric threshold
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• Effect of polariton-polariton interactions on the excitation spectrum of a non-equilibrium condensate in a periodic potential
• First-order spatial coherence measurements in a thermalized two-dimensional photonic quantum gas
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• Anomalous scaling at non-thermal fixed points of Burgers' and Gross-Pitaevskii turbulence
• Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light
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• Influence of interactions with non-condensed particles on the coherence of a 1D polariton condensate
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• Dual Measurements of Temporal and Spatial Coherence of Light in a Single Experimental Setup using a Modified Michelson Interferometer
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• First-order spatial coherence of excitons in planar nanostructures: a k-filtering effect
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