论文标题
挤压热状态的快捷方式
Shortcuts to Squeezed Thermal States
论文作者
论文摘要
可以通过多种技术生成谐波系统中的挤压状态，包括改变振荡器频率或使用非线性两光子拉曼相互作用。我们专注于这两种技术，以在任意时间内将初始热状态带入最终挤压热状态 - 振幅和相位。协议是通过逆向工程设计的，用于单一和开放动态。使用随机过程可以通过，例如连续量子测量来实现耗散的控制。重要的是，这允许控制状态熵，可用于快速热化。因此，开发的方案适合在任意时间内在受控温度下产生挤压的热状态。
Squeezed state in harmonic systems can be generated through a variety of techniques, including varying the oscillator frequency or using nonlinear two-photon Raman interaction. We focus on these two techniques to drive an initial thermal state into a final squeezed thermal state with controlled squeezing parameters -- amplitude and phase -- in arbitrary time. The protocols are designed through reverse engineering for both unitary and open dynamics. Control of the dissipation is achieved using stochastic processes, readily implementable via, e.g., continuous quantum measurements. Importantly, this allows controlling the state entropy and can be used for fast thermalization. The developed protocols are thus suited to generate squeezed thermal states at controlled temperature in arbitrary time.
