Multimode optomechanical system in the quantum regime
zqyin 添加于 2016-5-24 09:49
| 1443 次阅读 | 0 个评论
作 者
Nielsen WHP, Tsaturyan Y, Møller CB, Polzik ES, Schliesser A 摘 要
We realise a simple and robust optomechanical system with a multitude of long-lived ($Q>10^7$) mechanical modes in a phononic-bandgap shielded membrane resonator. An optical mode of a compact Fabry-Perot resonator detects these modes\' motion with a measurement rate ($96~mathrm{kHz}$) that exceeds the mechanical decoherence rates already at moderate cryogenic temperatures ($10,mathrm{K}$). Reaching this quantum regime entails, i.~a., quantum measurement backaction exceeding thermal forces, and thus detectable optomechanical quantum correlations. In particular, we observe ponderomotive squeezing of the output light mediated by a multitude of mechanical resonator modes, with quantum noise suppression up to -2.4 dB (-3.6 dB if corrected for detection losses) and bandwidths $lesssim 90,mathrm{ kHz}$. The multi-mode nature of the employed membrane and Fabry-Perot resonators lends itself to hybrid entanglement schemes involving multiple electromagnetic, mechanical, and spin degrees of freedom.-
详细资料
- 关键词: quant-ph; cond-mat.mes-hall; physics.optics
- 文献种类: Manual Script
- 期卷页: 2016年
- 日期: 2016-5-21
- 发布方式: arXiv e-prints
- 备注:arXiv:1605.06541v1; 19 pages, 9 figures
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评论( 人)
学科领域 自然科学 » 物理学
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