Superradiant Raman scattering in an ultracold Bose gas at finite temperature
arXiv:0805.0039 · doi:10.1103/PhysRevA.77.063614
Abstract
We study superradiant Raman scattering from an ultra-cold, but finite temperature Bose gas in a harmonic trap. Numerical simulations indicate the existence of distinct timescales associated with the decoherence of the condensed versus thermal fractions, and the concomitant preferred scattering from atoms in low lying trap states in the regime where superradiance takes place on a timescale comparable to an inverse trap frequency. As a consequence the scattered atoms experience a modest reduction in temperature as compared to the unscattered atoms.
arXiv comment7 pages, 4 figures
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Cited by in corpus (5)
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- Steady-state, cavity-less, multimode superradiance in a cold vapor
- Thermal effects in light scattering from ultracold bosons in an optical lattice
- Directional spatial structure of dissociated elongated molecular condensates
- Raman scattering of atoms from a quasi-condensate in a perturbative regime