We study the Bose polaron problem in a nonequilibrium setting, by considering an impurity embedded in a quantum fluid of light realized by exciton-polaritons in a microcavity, subject to a coherent drive and dissipation on account of pump and cavity losses. We obtain the polaron effective mass, the drag force acting on the impurity, and determine polaron trajectories at a semiclassical level. We find different dynamical regimes, originating from the unique features of the excitation spectrum of driven-dissipative polariton fluids, in particular a non-trivial regime of acceleration against the flow. Our work promotes the study of impurity dynamics as an alternative testbed for probing superfluidity in quantum fluids of light.
Cited by 3
Hakim et al., Metamorphoses of the flow past an obstacle of a resonantly driven bistable polariton fluid
Phys. Rev. B 107, 045306 (2023) [Crossref]
CÃ¡rdenas-Castillo et al., Strongly Interacting Bose Polarons in Two-Dimensional Atomic Gases and Quantum Fluids of Polaritons
Atoms 11, 3 (2022) [Crossref]
Jia et al., Interaction between an Impurity and Nonlinear Excitations in a Polariton Condensate
Entropy 24, 1789 (2022) [Crossref]
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- Horizon 2020 (through Organization: European Commission [EC])