Cavity optomechanics with a trapped, interacting Bose-Einstein condensate
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The dispersive interaction of a Bose-Einstein condensate with a single mode of a high-finesse optical cavity realizes the radiation pressure coupling Hamiltonian. In this system the role of the mechanical oscillator is played by a single condensate excitation mode that is selected by the cavity mode function. We study the effect of atomic s-wave collisions and show that it merely renormalizes parameters of the usual optomechanical interaction. Moreover, we show that even in the case of strong harmonic confinement – which invalidates the use of Bloch states – a single excitation mode of the Bose-Einstein condensate couples significantly to the light field, that is the simplified picture of a single “mechanical” oscillator mode remains valid.
KeywordsCold matter and quantum gas
- 3.D.M. Stamper-Kurn, in Cavity optomechanics with cold atoms in Cavity optomechanics, edited by M. Aspelmeyer, T. Kippenberg, F. Marquardt (Springer, 2012), arXiv:1204.4351Google Scholar
- 23.B. Prasanna Venkatesh, J. Larson, D.H.J. O’Dell, Phys. Rev. A 83, 063606 (2011)Google Scholar