Efficient bidirectional piezo-optomechanical transduction between microwave and optical frequency
Efficient bidirectional piezo-optomechanical transduction between microwave and optical frequency
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DOI：
10.1038/s41467-020-14863-3
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发表时间：
2020-03-03
影响因子：
16.6
通讯作者：
Safavi-Naeini, Amir H.
中科院分区：
文献类型：
--
作者：
Jiang, Wentao;Sarabalis, Christopher J.;Safavi-Naeini, Amir H.
微波和光频之间的经典和量子信息的有效相互转换是一个重要的工程挑战。由于普通材料的大的光学机械响应以及将机械能局部化到微米级体积中的能力，具有千兆赫频率机械设备的光学机械方法具有非常有效的潜力。然而，现有的演示遭受低光学品质因数、低电-机械转换效率和低光-机械相互作用速率的某种组合。在这里，我们展示了一个片上压电光学机械传感器，系统地解决所有这些挑战，实现近三个数量级的提高转换效率比以前的工作。我们的调制器演示声光调制V = 0.02 V。我们显示双向转换效率为10-5与3.3 μ W的红失谐光泵，和5.5%与323 μ W的蓝失谐泵。需要进一步研究毫开尔文温度下的量子转导，以了解效率和增加的噪声如何受到机械耗散，热导率和热容降低的影响。
Efficient interconversion of both classical and quantum information between microwave and optical frequency is an important engineering challenge. The optomechanical approach with gigahertz-frequency mechanical devices has the potential to be extremely efficient due to the large optomechanical response of common materials, and the ability to localize mechanical energy into a micron-scale volume. However, existing demonstrations suffer from some combination of low optical quality factor, low electrical-to-mechanical transduction efficiency, and low optomechanical interaction rate. Here we demonstrate an on-chip piezo-optomechanical transducer that systematically addresses all these challenges to achieve nearly three orders of magnitude improvement in conversion efficiency over previous work. Our modulator demonstrates acousto-optic modulation with V = 0.02 V. We show bidirectional conversion efficiency of 10-5 with 3.3 mu W red-detuned optical pump, and 5.5% with 323 mu W blue-detuned pump. Further study of quantum transduction at millikelvin temperatures is required to understand how the efficiency and added noise are affected by reduced mechanical dissipation, thermal conductivity, and thermal capacity.