Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck, Austria.
Phys Rev Lett. 2013 May 10;110(19):193602. doi: 10.1103/PhysRevLett.110.193602. Epub 2013 May 9.
We propose to use the intrinsic two-level system (TLS) defect states found naturally in integrated optomechanical devices for exploring cavity QED-like phenomena with localized phonons. The Jaynes-Cummings-type interaction between TLS and mechanics can reach the strong coupling regime for existing nano-optomechanical systems, observable via clear signatures in the optomechanical output spectrum. These signatures persist even at finite temperature, and we derive an explicit expression for the temperature at which they vanish. Further, the ability to drive the defect with a microwave field allows for realization of phonon blockade, and the available controls are sufficient to deterministically prepare non-classical states of the mechanical resonator.
我们建议利用集成光机械器件中自然存在的固有双能级系统（TLS）缺陷态来探索具有局域声子的腔 QED 类现象。TLS 和力学之间的 Jaynes-Cummings 型相互作用可以达到现有纳光电机械系统的强耦合状态，这可以通过光机械输出谱中的明显特征来观察到。这些特征甚至在有限温度下仍然存在，我们推导出了它们消失的温度的显式表达式。此外，通过微波场驱动缺陷的能力允许实现声子阻塞，并且可用的控制足以确定性地制备机械谐振器的非经典状态。
