Polariton dynamics in strongly interacting quantum many-body systems
arXiv:1909.01466 · doi:10.1103/PhysRevResearch.2.023102
Abstract
We develop a theory for light propagating in an atomic Bose-Einstein condensate in the presence of strong interactions. The resulting many-body correlations are shown to have profound effects on the optical properties of this interacting medium. For weak atom-light coupling, there is a well-defined quasiparticle, the polaron-polariton, supporting light propagation with spectral features differing significantly from the noninteracting case. The damping of the polaron-polariton depends nonmonotonically on the light-matter coupling strength, initially increasing and then decreasing. This gives rise to an interesting crossover between two quasiparticles: a bare polariton and a polaron-polariton, separated by a complex and lossy mixture of light and matter.
arXiv comment7 pages, 5 figures
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Cited by in corpus (8)
- Mediated interactions and photon bound states in an exciton-polariton mixture
- Polaritons in an electron gas -- quasiparticles and Landau effective interactions
- Superfluid flow of polaron polaritons above Landau's critical velocity
- Strong photon interactions from weakly interacting particles
- Green's function approach to interacting lattice polaritons and optical nonlinearities in subwavelength arrays of quantum emitters
- Polaritons for testing the universality of an impurity in a Bose-Einstein condensate
- Polaronic dressing of bound states
- Competition of light- and phonon-dressing in microwave-dressed Bose polarons