Excess noise depletion of a Bose-Einstein condensate in an optical cavity.
Quantum fluctuations of a cavity field coupled into the motion of ultracold bosons can be strongly amplified by a mechanism analogous to the Petermann excess noise factor in lasers with unstable cavities. For a Bose-Einstein condensate in a stable optical resonator, the excess noise effect amounts to a significant depletion on long time scales.
Szirmai
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Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Post Office Box 49, H-1525 Budapest, Hungary.
Nagy
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Domokos
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