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在光机械系统中非相互控制和冷却语音模式
H Xu1,2, Luyao Jiang1, A A Clerk3
1Department of Physics, Yale University, New Haven, CT, USA.
Nature
|April 5, 2019
概括
研究人员开发了一种新方法来打破机械共振器的互惠性, 这种创新允许在音声设备中进行可调的隔离和热波动控制.
科学领域:
- 量子物理和声学
- 视觉机械
- 纳米技术
背景情况:
- 机械共振器对于引力波探测器和智能手机等设备至关重要,
- 目前的系统通常遵循互惠,限制需要单向信号传播的应用.
- 现有的非互惠音声设备缺乏强大的操作特性,如强大的非互惠性,可调性和紧集成性.
研究的目的:
- 引入一种新的方案,以实现音声共振器之间的强大的非互联合.
- 展示一种控制机械共振器系统中的声能流量的方法.
- 探索非互惠在控制热波动和冷却共振器中的应用.
主要方法:
- 使用标准空腔-光机械交互来设计非互联合.
- 实现可调节的隔离,通过对光腔应用的驱动声调节相位.
- 直接监测共振器动态以分析对热波动的非相互影响.
主要成果:
- 在连续运行中达到大约30分贝的隔离.
- 在现场通过驱动声相证明非互惠性.
- 显示了对热波动的控制, 实现了声波共振器的冷却.
结论:
- 开发的光机械方案为音声共振器提供了强大的,可调和的,连续的非互联合.
- 这一突破使得能够创建具有增强性能的隔离器和循环器等先进的音声设备.
- 控制热波动的能力为机械共振器系统的冷却和降噪开辟了新的途径.
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