论文标题
Floquet群集自旋链的纠缠动力和相变
Entanglement dynamics and phase transitions of the Floquet cluster spin chain
论文作者
论文摘要
在基于测量的量子计算的背景下引入了群集状态。在一个维度上，哈密顿群集具有拓扑保护状态。我们研究了外部场中簇链链的浮动动力学，与粒子相互作用。我们探索拓扑和磁相的纠缠特性，首先在可整合的自旋晶格情况下，然后在相互作用的量子行走情况下进行。我们发现，除了热化外，动态相变的分离低和高范围的非热状态，让人联想到可集成的情况下存在的磁相，但其磁性特性有所不同。非连续相的特征是磁性的出现，长期存在。
Cluster states were introduced in the context of measurement based quantum computing. In one dimension, the cluster Hamiltonian possesses topologically protected states. We investigate the Floquet dynamics of the cluster spin chain in an external field, interacting with a particle. We explore the entanglement properties of the topological and magnetic phases, first in the integrable spin lattice case, and then in the interacting quantum walk case. We find, in addition to thermalization, dynamical phase transitions separating low- and high-entanglement nonthermal states, reminiscent of the ones present in the integrable case, but differing in their magnetic properties. The nonergodic phases are characterized by the emergence of magnetic order, persistent at long times.
