Coherence expansion and polariton condensate formation in a semiconductor microcavity
arXiv:1210.6906 · doi:10.1103/PhysRevLett.110.137402
Abstract
The dynamics of the expansion of the first order spatial coherence g(1) for a polariton system in a high-Q GaAs microcavity was investigated on the basis of Young's double slit experiment under 3 ps pulse excitation at the conditions of polariton Bose-Einstein condensation. It was found that in the process of condensate formation the coherence expands with a constant velocity of about 10^8 cm/s. The measured coherence is smaller than that in thermally equilibrium system during the growth of condensate density and well exceeds it at the end of condensate decay. The onset of spatial coherence is governed by polariton relaxation while condensate amplitude and phase fluctuations are not suppressed.
5 pages, 3 figures
References in corpus (11)
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Quantised Vortices in an Exciton-Polariton Fluid
- Coherent Oscillations in an Exciton-Polariton Josephson Junction
- Spatial Coherence of a Polariton Condensate
- BCS-BEC crossover in a system of microcavity polaritons
- Observing the Formation of Long-range Order during Bose-Einstein Condensation
- A BCS wavefunction approach to the BEC-BCS crossover of exciton-polariton condensates
- Dynamics of long-range order in an exciton-polariton condensate
- Spontaneous symmetry breaking in a polariton and photon laser
- What Determines the Wave Function of Electron-Hole Pairs in Polariton Condensates?
- Partially suppressed long-range order in the Bose-Einstein condensation of polaritons
Cited by in corpus (9)
- Second Thresholds in BEC-BCS-Laser Crossover of Exciton-Polariton Systems
- Electrodynamic duality and vortex unbinding in driven-dissipative condensates
- Influence of interactions with non-condensed particles on the coherence of a 1D polariton condensate
- Spin noise of a polariton laser
- Polariton linewidth and the reservoir temperature dynamics in a semiconductor microcavity
- Kinetic Monte Carlo Approach to Non-equilibrium Bosonic Systems
- Dynamics of spatial coherence and momentum distribution of polaritons in a semiconductor microcavity under conditions of Bose-Einstein condensation
- Jitter of condensation time and dynamics of spontaneous symmetry breaking in a gas of microcavity polaritons
- On the remote coherence of polariton condensates in 1D microcavities: a photoluminescence study