Split-sideband spectroscopy in slowly modulated optomechanics

Split-sideband spectroscopy in slowly modulated optomechanics
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慢速调制光力学中的分边带光谱

DOI:
10.1088/1367-2630/18/11/113021
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发表时间:
2016
影响因子:
3.3
通讯作者:
Aranas E
Aranas E
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aranas E

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机械振荡器和腔体运动之间的光机耦合代表了介观和宏观尺度上量子效应实验研究的新领域。腔体输出的运动边带提供了超灵敏的动力学探针。我们介绍了一种方案,其中这些边带不对称地分裂,并展示了如何将它们用作量子噪声有限动力学的实验诊断和签名。我们展示了通过同时缓慢且异相调制光机械耦合和机械频率 wM,可以产生具有可控不对称性的分边带。这种调制是通用的,但已经出现在光学捕获装置中,其中振荡器的平衡点周期性地变化。我们分析了最近观察到但被忽视的实验分边带不对称性;尽管尚未进入量子领域,但数据表明分裂边带结构很容易用于未来的实验。
Optomechanical coupling between the motion of a mechanical oscillator and a cavity represents a new arena for experimental investigation of quantum effects on the mesoscopic and macroscopic scale. The motional sidebands of the output of a cavity offer ultra-sensitive probes of the dynamics. We introduce a scheme whereby these sidebands split asymmetrically and show how they may be used as experimental diagnostics and signatures of quantum noise limited dynamics. We show split-sidebands with controllable asymmetry occur by simultaneously modulating the light-mechanical couplingg and the mechanical frequency, wM—slowly and out-of-phase. Such modulations are generic but already occur in optically trapped set-ups where the equilibrium point of the oscillator is varied cyclically. We analyse recently observed, but overlooked, experimental split-sideband asymmetries; although not yet in the quantum regime, the data suggests that split sideband structures are easily accessible to future experiments.
DOI: 10.1103/physrevlett.114.123602
发表时间: 2015-03-27
影响因子: 8.6
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