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arXiv 2408.03066physics.opticscond-mat.mes-hallquant-ph
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SiN膜阵列中的长程光力相互作用

Long-range optomechanical interactions in SiN membrane arrays

Fudan University(复旦大学);Westlake University(西湖大学);Delft University of Technology(代尔夫特理工大学);Aalto University(阿尔托大学);Zhejiang University(浙江大学)

Xiong Yao, Matthijs H. J. de Jong, Jie Li, Simon Gröblacher

AI总结:

本研究通过双膜系统在弗朗霍夫-佩罗腔内实现共振增强,显著提升了光力耦合强度,展示了双膜阵列在集体运动中的四倍增强效果。

摘要:

利用膜中间配置的光力系统可以表现出类似于原子在光学势场中集体运动的长程相互作用。光子在高 finesse 弗朗霍夫-佩罗腔内来回反射,并在显著距离上介导多个膜之间的相互作用,相比波长而言更远。最近已证明,光与膜间腔的非共振耦合可以导致相干机械噪声消除。然而,光与弗朗霍夫-佩罗腔和膜间腔的共振耦合,预测能增强单光子光力耦合,但尚未在实验中得到验证。在本实验中,一个双膜系统置于弗朗霍夫-佩罗腔内,共振增强腔场,从而通过增加辐射压增强光力耦合强度。共振条件首先通过分析色散关系的斜率确定。然后,在一个波长范围内,确定不同芯片位置的光力耦合强度。获得最佳耦合条件,并展示了具有三种不同反射率的双膜阵列的增强效果,对于反射率为65%的双膜,集体运动的增强达到近四倍。在最佳耦合条件下还表征了腔损耗,并讨论了达到单光子强耦合 regime 的潜力。

英文摘要:

Optomechanical systems using a membrane-in-the-middle configuration can exhibit a long-range type of interaction similar to how atoms show collective motion in an optical potential. Photons bounce back and forth inside a high-finesse Fabry-Pérot cavity and mediate the interaction between multiple membranes over a significant distance compared to the wavelength. Recently, it has been demonstrated that off-resonant coupling between light and the inter-membrane cavity can lead to coherent mechanical noise cancellation. On-resonance coupling of light with both the Fabry-Pérot and inter-membrane cavities, predicted to enhance the single photon optomechanical coupling, have to date not been experimentally demonstrated, however. In our experiment, a double-membrane system inside a Fabry-Pérot cavity resonantly enhances the cavity field, resulting in a stronger optomechanical coupling strength from the increased radiation pressure. The resonance condition is first identified by analyzing the slope of the dispersion relation. Then, the optomechanical coupling is determined at various chip positions over one wavelength range. The optimum coupling conditions are obtained and enhancement is demonstrated for double membrane arrays with three different reflectivites, reaching nearly four-fold enhancement for the collective motion of $R=65\%$ double membranes. The cavity losses at the optimum coupling are also characterized and the potential of reaching the single-photon strong coupling regime is discussed.

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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