Probing the excitation spectrum of nonresonantly pumped polariton condensates

Abstract

We propose a four wave mixing experiment to probe the elementary excitation spectrum of a non-equilibrium Bose-Einstein condensate of exciton-polaritons under non-resonant pumping. Analytical calculations based on mean-field theory show that this method is able to reveal the characteristic negative energy feature of the Bogoliubov dispersion. Numerical simulations including the finite spatial profile of the excitation laser spot and a weak disorder confirm the practical utility of the method for realistic condensates.

arXiv comment7 pages, 5 figures

References in corpus (10)

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• Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
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• Synchronized and Desynchronized Phases of Exciton-Polariton Condensates in the Presence of Disorder
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Cited by in corpus (16)

• Quantum fluids of light
• Exciton-polariton condensates
• From single particle to superfuid excitations in a dissipative polariton gas
• The negative Bogoliubov dispersion in exciton-polariton condensates
• Superfluid Stiffness of a Driven Dissipative Condensate with Disorder
• Degenerate Bose gases with uniform loss
• Spin anisotropic interactions of lower-polaritons in the vicinity of polaritonic Feshbach resonance
• Dynamics of Phase Coherence Onset in Bose Condensates of Photons by Incoherent Phonon Emission
• Photoluminescence and gain/absorption spectra of a driven-dissipative electron-hole-photon condensate
• Directional Goldstone waves in polariton condensates close to equilibrium
• Pump-and-probe optical transmission phase shift as a quantitative probe of the Bogoliubov dispersion relation in a nonlinear channel waveguide
• Galilean boosts and superfluidity of resonantly driven polariton fluids in the presence of an incoherent reservoir
• Theoretical study of stimulated and spontaneous Hawking effects from an acoustic black hole in a hydrodynamically flowing fluid of light
• Nonequilibrium Landau-Zener Tunneling in Exciton-Polariton Condensates
• Direct observation of the quantum-fluctuation driven amplitude mode in a microcavity polariton condensate
• Non-Hermitian synthetic lattices with light-matter coupling