论文标题
波导量子光学力学：超筋耦合方案中的平均时间相变
Waveguide quantum optomechanics: parity-time phase transitions in ultrastrong coupling regime
论文作者
论文摘要
我们开发了一个严格的理论框架，用于由量子器机械振荡驱动的波导量子电动力学（QED）中相互作用诱导的现象。具体而言，我们预测，两个量子位的最简单设置在光学波导上谐波捕获，可以实现量子光学机械相互作用的Ultrastrong耦合方案。此外，系统固有的开放性质和强烈的光力耦合的结合导致了新兴平价时间（\ pt）对称性，对于纯粹的量子系统而言，没有人工工程的增益和损失，这是非常出乎意料的。 $ \ MATHCAL {PT} $相位过渡驱动长期生存的次级状态，可在最先进的波导QED设置中观察到。
We develop a rigorous theoretical framework for interaction-induced phenomena in the waveguide quantum electrodynamics (QED) driven by mechanical oscillations of the qubits. Specifically, we predict that the simplest set-up of two qubits, harmonically trapped over an optical waveguide, enables the ultrastrong coupling regime of the quantum optomechanical interaction. Moreover, the combination of the inherent open nature of the system and the strong optomechanical coupling leads to emerging parity-time (\PT) symmetry, quite unexpected for a purely quantum system without artificially engineered gain and loss. The $\mathcal{PT}$ phase transition drives long-living subradiant states, observable in the state-of-the-art waveguide QED setups.
