Coherent interactions between phonons and exciton or exciton-polariton condensates

Abstract

We analyse the interaction of exciton and exciton-polariton condensates in semiconductor microcavity with a coherent acoustic wave. An analytical solution for the dispersion of excitations of coupled condensate-phonon system is found in the approximation of k-independent interactions. Accounting for k-dependence results in a stronger modification of the dispersion, and even in the appearance of the "roton instability" region.

References in corpus (4)

• Observation of Superfluidity of Polaritons in Semiconductor Microcavities
• Quantum-fluid dynamics of microcavity polaritons
• Rotons in a hybrid Bose-Fermi system
• Bloch Oscillations of an Exciton-polariton Bose-Einstein Condensate

Cited by in corpus (4)

• Microscopic calculation of polariton scattering in semiconductor microcavities
• Optomechanical amplification driven by interference of phonon-exciton and phonon-photon couplings
• Resonant excitation of acoustic waves in one-dimensional exciton-polariton systems
• Optomechanical lasing and domain walls driven by exciton-phonon interactions