Coherent Flow and Trapping of Polariton Condensates with Long Lifetime
Abstract
We report new results of Bose-Einstein condensation of polaritons in specially designed microcavities with very high quality factor, on the order of 106, giving the polariton lifetimes of the order of 100 ps. When the polaritons are created with an incoherent pump, a dissipationless, coherent flow of the polaritons occurs over hundreds of microns, which increases as density increases. At high density, this flow is suddenly stopped, and the gas becomes trapped in a local potential minimum, with strong coherence.
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