论文标题
在非交互式量子系统中，紧急量子相关性和集体行为受到随机重置
Emergent quantum correlations and collective behavior in non-interacting quantum systems subject to stochastic resetting
论文作者
论文摘要
我们研究了在存在随机重置的情况下，正在进行连贯的狂犬病振荡的非相互作用自旋系统的动力学。我们表明，重置通常在出现的耗散动力学和非平衡固定态中引起远程量子和经典相关性。此外，对于有条件的复位方案的情况（将系统重新定义为依赖于先前测量结果的状态的状态），我们表明，在热力学极限中，自旋系统可以具有集体行为，从而导致现象学使人联想到非平衡相位过渡中发生的行为。讨论的重置协议可以在量子模拟器和量子设备上实现，这些设备允许快速测量和读取宏观观察物，例如磁化。我们的方法不需要控制一致的相互作用，因此可能会突出一条途径，可以简单而强大的量子相关性和集体非平衡状态，并在量子增强的计量学和传感中使用潜在的应用。
We investigate the dynamics of a non-interacting spin system, undergoing coherent Rabi oscillations, in the presence of stochastic resetting. We show that resetting generally induces long-range quantum and classical correlations both in the emergent dissipative dynamics and in the non-equilibrium stationary state. Moreover, for the case of conditional reset protocols -- where the system is reinitialized to a state dependent on the outcome of a preceding measurement -- we show that, in the thermodynamic limit, the spin system can feature collective behavior which results in a phenomenology reminiscent of that occurring in non-equilibrium phase transitions. The discussed reset protocols can be implemented on quantum simulators and quantum devices that permit fast measurement and readout of macroscopic observables, such as the magnetisation. Our approach does not require the control of coherent interactions and may therefore highlight a route towards a simple and robust creation of quantum correlations and collective non-equilibrium states, with potential applications in quantum enhanced metrology and sensing.
