| Nonreciprocal Phonon Laser in an Asymmetric Cavity with an Atomic Ensemble |
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| 作者姓名： | 黄凯伟 王鑫 邱庆洋 吴龙 熊豪 |
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| 作者单位： | School of Physics, Huazhong University of Science and Technology |
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| 基金项目： | supported by the National Key Research and Development Program of China (Grant No. 2021YFA1400700)；;the National Natural Science Foundation of China (Grant Nos. 11774113and 12022507)；;the Fundamental Research Funds for the Central Universities (Grant No. 2019kfy RCPY111)； |
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| 摘 要： | Phonon lasers, as a novel kind of lasers for generating coherent sound oscillation, has attracted extensive attention. Here, we theoretically propose a nonreciprocal phonon laser in a hybrid optomechanical system, which is composed of an asymmetric Fabry–Pérot cavity, an ensemble of N identical two-level atoms, and a mechanical oscillator. The effective driving amplitude related to driving direction leads to an obvious difference in mechanical gain and threshold power, bringing about a nonrecipr...
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