Metamorphosis of Goldstone and Soft Fluctuation Modes in Polariton Lasers
arXiv:2007.13253 · doi:10.1103/PhysRevB.103.085304
Abstract
For a driven-dissipative quantum many-body system prepared in a spontaneous broken-symmetry steady state, in addition to the Goldstone mode the soft fluctuation modes provide important insight into the system's dynamics. Using a microscopic polariton laser theory, we find a rich transformation behavior of discrete and continuum soft modes in a two parameter (pump density and cavity dissipation rate) space. In addition to finding exceptional-point Goldstone companion modes, our theory yields a unified picture of a variety of seemingly disconnected physical concepts including Mott transition, Mollow spectra or relaxation oscillations, and polaritonic Bardeen-Cooper-Schrieffer gaps.
References in corpus (13)
- Strong light-matter coupling in two-dimensional atomic crystals
- Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
- Quantum-fluid dynamics of microcavity polaritons
- Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities
- Non-equilibrium quantum condensation in an incoherently pumped dissipative system
- Collective coherence in planar semiconductor microcavities
- 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
- Relaxation Oscillations in the Formation of a Polariton Condensate
- 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