arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2310.04522quant-ph
收藏

用于宽带多维变分测量的压缩

Squeezing for Broadband Multidimensional Variational Measurement

Aleksandr A. Movsisian, Sergey P. Vyatchanin

AI总结:

本研究提出基于三光学模式光力学系统的宽带多维变分测量方案,通过最优正交分量探测与后处理在宽频带消除量子反作用以突破标准量子极限,并分析了腔内损耗及两类压缩对灵敏度的影响。

摘要:

宽带多维变分测量能够突破经典机械力探测的标准量子极限(SQL),该极限源于会扰动机械振子演化的量子反作用。在这一光力学方案中,探测的是作用于线性机械振子的共振信号力,该振子与包含三个光学模式的系统耦合,模式间隔近似等于机械频率。测量通过对中心光学模式进行光泵浦,并检测另外两个模式出射的光来实现。对光学模式的最优正交分量进行探测及后处理,可在宽频带内消除反作用并超越SQL。我们表明,腔内光学损耗会因损耗噪声限制反作用消除效果。我们还分析了双光子(非简并)压缩和常规(简并)压缩在考虑光学损耗的情况下如何提升灵敏度,主要关注内部压缩。

英文摘要:

Broadband multidimensional variational measurement allows to overcome Standard Quantum Limit (SQL) of a classical mechanical force detection, resulting from quantum back action, which perturbs evolution of a mechanical oscillator. In this optomechanic scheme detection of a resonant signal force acting on a linear mechanical oscillator coupled to a system with three optical modes with separation nearly equal to the mechanical frequency. The measurement is performed by optical pumping of the central optical mode and measuring the light escaping the two other modes. Detection of optimal quadrature components of the optical modes and post processing result in the back action exclusion in a broad frequency band and surpassing SQL. We show that optical losses inside cavity restrict back action exclusion due to loss noise. We also analyze how two-photon (nondegenerate) and conventional (degenerate) squeezing improve sensitivity with account optical losses, considering mainly internal squeezing.

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。

↑