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arXiv · 1303.2977

Cavity optomechanics with a trapped, interacting Bose-Einstein condensate

D. Nagy·G. Szirmai·P. Domokos
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Abstract

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.

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D. Nagy, G. Szirmai, P. Domokos. 2013-03-12. Cavity optomechanics with a trapped, interacting Bose-Einstein condensate. https://doi.org/10.1140/epjd%2Fe2013-40142-2

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