Collective terahertz fluctuation modes in a polariton laser
arXiv:2302.01482 · doi:10.1103/PhysRevB.107.125309
Abstract
A polariton Bardeen-Cooper-Schrieffer (BCS) state in a semiconductor microcavity is an example of symmetry-broken states in open systems. Fluctuations of the order parameter are an important tool to characterize such a state. With the condensate formed by composite particles, the set of zero-momentum fluctuations spans an infinite-dimensional electron-hole mode subspace. We show that collective fluctuation modes with orbital angular momentum different from that of the order parameter can be obtained with terahertz radiation, and that a physical manifestation of such modes, which are not Higgs modes, can be terahertz gain.
23 pages, 13 figures
References in corpus (15)
- Strong light-matter coupling in two-dimensional atomic crystals
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Quantum-fluid dynamics of microcavity polaritons
- Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities
- Amplitude / Higgs Modes in Condensed Matter Physics
- Collective coherence in planar semiconductor microcavities
- BCS-BEC crossover in a system of microcavity polaritons
- Higgs mode in a strongly interacting fermionic superfluid
- A BCS wavefunction approach to the BEC-BCS crossover of exciton-polariton condensates
- Influence of exciton-exciton correlations on the polarization characteristics of the polariton amplification in semiconductor microcavities
- All-optical flow control of a polariton condensate using non-resonant excitation
- Generating Functional Approach for Spontaneous Coherence in Semiconductor Electron-Hole-Photon Systems
- Quantum fluctuations in a strongly interacting Bardeen-Cooper-Schrieffer polariton condensate at thermal equilibrium
- Light dressed-excitons in an incoherent-electron sea: Evidence for Mollow-triplet and Autler-Townes doublet
- Terahertz Spectroscopy of Semiconductor Microcavity Lasers I: Photon Lasers