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Enhancement of charge sensitivity by nonlinear optomechanics
Optics Letters ( IF 3.6 ) Pub Date : 2021-05-13 , DOI: 10.1364/ol.424795
Ling-Juan Feng , Shang-Qing Gong

Quantum estimation of electrical charge is investigated by using nonlinear optomechanical interaction. Due to the light–matter decoupling at one mechanical period, we need to consider only the cavity state, meaning that no direct access to the oscillator state is required. It is shown that the charge sensitivity can be greatly improved by enhancing optomechanical coupling. Further, we find that our theoretical result can surpass the sensitivity obtained from electrical measurements.

中文翻译:

非线性光力学提高电荷敏感性

利用非线性光机械相互作用研究了电荷的量子估计。由于光在一个机械周期上的去耦,我们只需要考虑腔状态,这意味着不需要直接进入振荡器状态。结果表明,通过增强光机耦合,可以大大提高电荷灵敏度。此外,我们发现我们的理论结果可以超过从电学测量获得的灵敏度。
更新日期:2021-05-14
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