Optomechanical Dark Mode
Optomechanical Dark Mode
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DOI：
10.1126/science.1228370
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发表时间：
2012-12-21
期刊：
影响因子：
56.9
通讯作者：
Wang, Hailin
中科院分区：
文献类型：
--
作者：
Dong, Chunhua;Fiore, Victor;Wang, Hailin
热机械运动阻碍了机械系统在量子信息处理等应用中的应用。虽然热运动可以通过冷却机械振荡器到其运动基态来克服，但另一种方法是利用机械暗模式来保护系统免受机械耗散。我们在弱光-力耦合的情况下，通过将硅谐振器中的两个光学模式与其中一个机械呼吸模式耦合，实现了这种暗模式。暗模是两种光模的叠加，并且与机械振子解耦，仍然可以调解两种光模之间有效的光力学耦合。我们表明，暗模的形成使光场在两种光模之间转移。光力学暗模式开启了在量子应用中使用机械介导耦合的可能性，而无需将机械振荡器冷却到其运动基态。
Thermal mechanical motion hinders the use of a mechanical system in applications such as quantum information processing. Whereas the thermal motion can be overcome by cooling a mechanical oscillator to its motional ground state, an alternative approach is to exploit the use of a mechanically dark mode that can protect the system from mechanical dissipation. We have realized such a dark mode by coupling two optical modes in a silica resonator to one of its mechanical breathing modes in the regime of weak optomechanical coupling. The dark mode, which is a superposition of the two optical modes and is decoupled from the mechanical oscillator, can still mediate an effective optomechanical coupling between the two optical modes. We show that the formation of the dark mode enables the transfer of optical fields between the two optical modes. Optomechanical dark mode opens the possibility of using mechanically mediated coupling in quantum applications without cooling the mechanical oscillator to its motional ground state.