Giant increase of temporal coherence in optically trapped polariton condensate
arXiv:1911.08981
Abstract
Coherent bosonic ensembles offer the promise of harnessing quantum effects in photonic and quantum circuits. In the dynamic equilibrium regime, the application of polariton condensates is hindered by exciton-polariton scattering induced de-coherence in the presence of a dark exciton reservoir. By spatially separating the condensate from the reservoir, we drive the system into the weak interaction regime, where the ensemble coherence time exceeds the individual particle lifetime by nearly three orders of magnitude. The observed nanosecond coherence provides an upper limit for polariton self-interactions. In contrast to conventional photon lasers, we observe an increased contribution from the super-Poissonian component of the condensate to the overall particle number fluctuations. Coupled with the recent emergence of a quantum regime in polaritonics, coherence times extended to several nanoseconds favour the realization of quantum information protocols.
arXiv comment15pages, 4 figures and supplementary information
References in corpus (18)
- Direct observation of Dirac cones and a flatband in a honeycomb lattice for polaritons
- Engineering spin-orbit coupling for photons and polaritons in microstructures
- Spatial and spectral shape of inhomogeneous non-equilibrium exciton-polariton condensates
- Polariton Condensation in an optically induced 2D potentia
- Polaritons are Not Weakly Interacting: Direct Measurement of the Polariton-Polariton Interaction Strength
- A complete architecture of integrated photonic circuits based on AND and NOT logic gates of exciton-polaritons in semiconductor microcavities
- Direct measurement of polariton-polariton interaction strength in the Thomas-Fermi regime of exciton-polariton condensation
- Coexisting Non-Equilibrium Condensates with Long-Range Spatial Coherence in Semiconductor Microcavities
- Spin order and phase transitions in chains of polariton condensates
- Dissipative phase locking of exciton-polariton condensates
- Robust platform for engineering pure-quantum-state transitions in polariton condensates
- Optical control of synchronous phases in a programmable polariton cell
- A platform for electrically pumped polariton simulators and topological lasers
- Optical bistability under non-resonant excitation in spinor polariton condensates
- Coherence properties of the microcavity polariton condensate
- Atom laser coherence and its control via feedback
- Evolution of temporal coherence in confined polariton condensates
- Observation of the exciton Mott transition in the photoluminescence of coupled quantum wells
Cited by in corpus (5)
- Motional narrowing, ballistic transport, and trapping of room-temperature exciton polaritons in an atomically-thin semiconductor
- Optical orientation, polarization pinning, and depolarization dynamics in optically confined polariton condensates
- Non-equilibrium Berezinskii-Kosterlitz-Thouless transition in driven-dissipative condensates
- Synchronization in optically-trapped polariton Stuart-Landau networks
- Narrow-linewidth exciton-polariton laser