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Engineering phonon leakage in nanomechanical resonators

zqyin 添加于 2017-5-23 09:08 | 960 次阅读 | 0 个评论

作者
Patel RN, Sarabalis CJ, Jiang W, Hill JT, Safavi-Naeini AH
摘要
We propose and experimentally demonstrate a technique for coupling phonons out of an optomechanical crystal cavity. By designing a perturbation that breaks a symmetry in the elastic structure, we selectively induce phonon leakage without affecting the optical properties. It is shown experimentally via cryogenic measurements that the proposed cavity perturbation causes loss of phonons into mechanical waves on the surface of silicon, while leaving photon lifetimes unaffected. This 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 using simulations. Our technique opens the way to engineering more complex on-chip phonon networks utilizing guided mechanical waves to connect quantum systems.
详细资料
- 关键词: physics.optics; quant-ph
- 文献种类:手稿
- 期卷页: 2017年
- 日期: 2017-5-23
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1705.07869v1
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