Enhancement and suppression of spontaneous emission and light scattering by quantum degeneracy
A. Gorlitz, A. P. Chikkatur, W. Ketterle
Abstract
Quantum degeneracy modifies light scattering and spontaneous emission. For fermions, Pauli blocking leads to a suppression of both processes. In contrast, in a weakly interacting Bose-Einstein condensate, we find spontaneous emission to be enhanced, while light scattering is suppressed. This difference is attributed to many-body effects and quantum interference in a Bose-Einstein condensate.
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