Cavity optomechanics with a Bose-Einstein condensate
Cavity optomechanics with a Bose-Einstein condensate
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DOI：
10.1126/science.1163218
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发表时间：
2008-10-10
期刊：
影响因子：
56.9
通讯作者：
Esslinger, Tilman
中科院分区：
文献类型：
--
作者：
Brennecke, Ferdinand;Ritter, Stephan;Esslinger, Tilman
腔光力学研究机械振子与腔中电磁场之间的耦合。我们报道了一种腔光力学系统，其中玻色 - 爱因斯坦凝聚体的集体密度激发作为与腔场耦合的机械振子。超高精细度腔中的少数光子触发了强驱动的反作用动力学，这与腔光力学模型在定量上相符。我们接近了腔光力学的强耦合区域，在该区域中机械振子的单个激发会对腔场产生重大影响。这些结果为在量子区域以及经典物理和量子物理之间的边界研究机械振子开辟了新的方向。
Cavity optomechanics studies the coupling between a mechanical oscillator and the electromagnetic field in a cavity. We report on a cavity optomechanical system in which a collective density excitation of a Bose-Einstein condensate serves as the mechanical oscillator coupled to the cavity field. A few photons inside the ultrahigh-finesse cavity trigger strongly driven back-action dynamics, in quantitative agreement with a cavity optomechanical model. We approach the strong coupling regime of cavity optomechanics, where a single excitation of the mechanical oscillator substantially influences the cavity field. The results open up new directions for investigating mechanical oscillators in the quantum regime and the border between classical and quantum physics.