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arXiv 0912.4085quant-phgr-qc
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光学机械测量中的反向action放大和量子极限

Back-action amplification and quantum limits in optomechanical measurements

P. Verlot, A. Tavernarakis, T. Briant, P. -F. Cohadon, A. Heidmann

摘要:

光学干涉测量法是迄今为止最灵敏的位移测量技术,目前运行的大尺度引力波干涉仪的灵敏度为10^-20 m/rootHz。第二代干涉仪的灵敏度将提高10倍,并且主要受到量子噪声的限制,接近标准量子极限(SQL),这曾被认为是干涉测量可实现的最终位移灵敏度。在这封信中,我们通过实验证明了设想超越SQL的技术之一:在失谐腔中通过辐射压力反作用放大信号。

英文摘要:

Optical interferometry is by far the most sensitive displacement measurement technique available, with sensitivities at the 10^-20 m/rootHz level in the large-scale gravitational-wave interferometers currently in operation. Second generation interferometers will experience a 10-fold improvement in sensitivity and be mainly limited by quantum noise, close to the Standard Quantum Limit (SQL), once considered as the ultimate displacement sensitivity achievable by interferometry. In this Letter, we experimentally demonstrate one of the techniques envisioned to go beyond the SQL: amplification of a signal by radiation-pressure back-action in a detuned cavity.

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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