arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.05640physics.opticsquant-ph
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超流布里渊光学力学

Superfluid Brillouin Optomechanics

A. D. Kashkanova, A. B. Shkarin, C. D. Brown, N. E. Flowers-Jacobs, L. Childress, S. W. Hoch, L. Hohmann, K. Ott, J. Reichel, J. G. E. Harris

摘要:

光学机械系统将电磁腔耦合到通常由固体物体形成的机械谐振器。这些系统可获得的现象的范围取决于机械谐振器的特性以及它耦合到腔场的方式。在这两个方面,由超流液氦形成的机械谐振器提供了几个吸引人的特征:低电磁吸收,高导热性,消失的粘度,众所周知的机械损耗,以及与低温腔的原位对准。此外,它提供的自由度与固体的自由度在性质上不同。在这里,我们描述了一个光学机械系统组成的微型光学腔充满超流氦。腔镜以近乎完美的重叠定义光学和机械模式,从而产生约3 kHz的光机耦合率。这种耦合被用来驱动超流体;它也被用来观察超流体的热运动,分辨平均声子数低至11。

英文摘要:

Optomechanical systems couple an electromagnetic cavity to a mechanical resonator which is typically formed from a solid object. The range of phenomena accessible to these systems depends on the properties of the mechanical resonator and on the manner in which it couples to the cavity fields. In both respects, a mechanical resonator formed from superfluid liquid helium offers several appealing features: low electromagnetic absorption, high thermal conductivity, vanishing viscosity, well-understood mechanical loss, and in situ alignment with cryogenic cavities. In addition, it offers degrees of freedom that differ qualitatively from those of a solid. Here, we describe an optomechanical system consisting of a miniature optical cavity filled with superfluid helium. The cavity mirrors define optical and mechanical modes with near-perfect overlap, resulting in an optomechanical coupling rate ~3 kHz. This coupling is used to drive the superfluid; it is also used to observe the superfluid's thermal motion, resolving a mean phonon number as low as 11.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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