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arXiv 2104.09208quant-ph
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250 ~ 450 mK的微波光机械诱导透明和吸收

Microwave Optomechanically Induced Transparency and Absorption Between 250 and 450 mK

Sumit Kumar, Dylan Cattiaux, Eddy Collin, Andrew Fefferman, Xin Zhou

摘要:

在微波光机械系统中,机械谐振器通过辐射压力耦合到微波谐振腔,可以制成高质量的微波放大器和陷波滤波器。这些放大器和滤波器分别依赖于光机械诱导透明(OMIT)和吸收(OMIA)。这种器件可以放大微波信号,具有大的可控增益、高动态范围和非常低的噪声。此外,可以用这种技术构造极窄带滤波器。我们简要回顾了以前的测量微波OMIT和OMIA之前,我们自己的测量这些现象,其中包括一个更大的参数空间比以前的作品中已经探索。特别地,我们改变探测频率、泵浦频率、泵浦方案(红色或蓝色)、探测功率、泵浦功率和温度。我们发现我们的测量和输入/输出理论的预测之间非常吻合,从而指导进一步发展的微波器件的基础上纳米力学。

英文摘要:

High-quality microwave amplifiers and notch-filters can be made from microwave optomechanical systems in which a mechanical resonator is coupled to a microwave cavity by radiation pressure. These amplifiers and filters rely on optomechanically induced transparency (OMIT) and absorption (OMIA), respectively. Such devices can amplify microwave signals with large, controllable gain, high dynamic range and very low noise. Furthermore, extremely narrowband filters can be constructed with this technique. We briefly review previous measurements of microwave OMIT and OMIA before reporting our own measurements of these phenomena, which cover a larger parameter space than has been explored in previous works. In particular, we vary probe frequency, pump frequency, pumping scheme (red or blue), probe power, pump power and temperature. We find excellent agreement between our measurements and the predictions of input/output theory, thereby guiding further development of microwave devices based on nanomechanics.

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