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arXiv 1005.4085quant-phphysics.atom-phphysics.optics
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超冷原子的可调谐腔光学力学

Tunable Cavity Optomechanics with Ultracold Atoms

T. P. Purdy, D. W. C. Brooks, T. Botter, N. Brahms, Z. -Y. Ma, D. M. Stamper-Kurn

摘要:

我们提出了一种基于原子芯片的量子腔光学力学的实现与冷原子局域在法布里-珀罗腔。有效的亚波长定位的原子系综允许调谐的线性和二次光机械耦合参数,变化的灵敏度的位移和应变的可压缩气体悬臂。我们观察到这样的调谐腔的光学非线性和光机械频移的影响,提供他们的第一个表征在二次耦合制度。

英文摘要:

We present an atom-chip-based realization of quantum cavity optomechanics with cold atoms localized within a Fabry-Perot cavity. Effective sub-wavelength positioning of the atomic ensemble allows for tuning the linear and quadratic optomechanical coupling parameters, varying the sensitivity to the displacement and strain of a compressible gaseous cantilever. We observe effects of such tuning on cavity optical nonlinearity and optomechanical frequency shifts, providing their first characterization in the quadratic-coupling regime.

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