论文标题
混乱概率控制中的动态纠缠过渡
Dynamical entanglement transition in the probabilistic control of chaos
论文作者
论文摘要
我们在监视的量子系统中发现了动态的纠缠过渡，该系统由局部顺序参数预示。从经典上讲，混沌系统可以随机控制在不稳定的周期轨道上，并表现出受控和不受控制的阶段，这是应用控制速率的函数。我们表明，这种控制过渡持续存在于开放量子系统中，其中通过本地测量和统一反馈实现控制。从具有已知控制转变的简单经典模型开始，我们定义了一个量子模型，该模型在混乱的体积法纠缠相位和脱离的受控相之间表现出扩散的过渡。与受监视的量子电路中的其他纠缠转变不同，此转变也可以通过相关函数探测，而无需解决单个量子轨迹。
We uncover a dynamical entanglement transition in a monitored quantum system that is heralded by a local order parameter. Classically, chaotic systems can be stochastically controlled onto unstable periodic orbits and exhibit controlled and uncontrolled phases as a function of the rate at which the control is applied. We show that such control transitions persist in open quantum systems where control is implemented with local measurements and unitary feedback. Starting from a simple classical model with a known control transition, we define a quantum model that exhibits a diffusive transition between a chaotic volume-law entangled phase and a disentangled controlled phase. Unlike other entanglement transitions in monitored quantum circuits, this transition can also be probed by correlation functions without resolving individual quantum trajectories.
