Engineering Phonon Leakage in Nanomechanical Resonators

被引:20
作者
Patel, Rishi N. [1 ]
Sarabalis, Christopher J.
Jiang, Wentao
Hill, Jeff T.
Safavi-Naeini, Amir H.
机构
[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
来源
PHYSICAL REVIEW APPLIED | 2017年 / 8卷 / 04期
基金
美国国家科学基金会;
关键词
OPTOMECHANICAL CIRCUITS; OSCILLATOR; MICROWAVE; PHOTONS; STATE;
D O I
10.1103/PhysRevApplied.8.041001
中图分类号
O59 [应用物理学];
学科分类号
摘要
We propose and demonstrate a technique for coupling phonons out of an optomechanical crystal cavity. Using a perturbation that breaks a symmetry in the elastic structure, we induce phonon leakage without affecting the optical properties. It is shown experimentally via cryogenic measurements that the proposed cavity perturbation causes a loss of phonons into mechanical waves on the surface of silicon while leaving photon lifetimes unaffected. This result demonstrates that phonon leakage can be engineered in on-chip optomechanical systems. We experimentally observe large fluctuations in leakage rates that we attribute to fabrication disorder and verify this finding using simulations. Our technique opens the way to engineering more complex on-chip phonon networks utilizing guided mechanical waves to connect quantum systems.
引用
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页数:5
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