title: Excess noise depletion of a Bose-Einstein condensate in an optical cavity.
abstract: 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.
authors.affiliation: Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Post Office Box 49, H-1525 Budapest, Hungary.
authors.forename: G
authors.initials: G
authors.lastname: Szirmai
authors.forename: D
authors.initials: D
authors.lastname: Nagy
authors.forename: P
authors.initials: P
authors.lastname: Domokos