论文标题
量子蜂窝自动机中的纠缠动力和牙齿破裂
Entanglement dynamics and ergodicity breaking in a quantum cellular automaton
论文作者
论文摘要
在Rydberg原子阵列的封锁状态下，观察到巨像破裂，以低纠缠特征状态的形式称为Scars，但无法热化。这些状态的签名仍然存在于定期驱动的系统中，在那里它们与大量混乱状态共存。在这里，我们根据经典规则研究了一个量子蜂窝自动机，该规则如果其两个邻居处于较低的状态，该规则会更新站点。我们表明，恐怖性的破裂延伸到混乱状态。终结性的动态破裂受到传播纠缠的手性准粒子激发的控制。发现非本地纠缠的证据，表明这些非热混沌态可能对量子计算有用。
Ergodicity breaking is observed in the blockade regime of Rydberg atoms arrays, in the form of low entanglement eigenstates known as scars, which fail to thermalize. The signature of these states persists in periodically driven systems, where they coexist with an extensive number of chaotic states. Here we investigate a quantum cellular automaton based on the classical rule that updates a site if its two neighbors are in the lower state. We show that the breaking of ergodicity extends to chaotic states. The dynamical breaking of ergodicity is controlled by chiral quasiparticle excitations which propagate entanglement. Evidence of nonlocal entanglement is found, showing that these nonthermal chaotic states may be useful to quantum computation.
