论文标题
局部耗散的储层工程：动力学和热度前化
Reservoir engineering with localized dissipation: dynamics and pre-thermalization
论文作者
论文摘要
从资源的角度来看，仅使用局部工程耗散的水库工程晶格状态极具吸引力，但可能会遭受较长的放松时间。在这里，我们研究了局部耦合到单个挤压储层的玻色晶晶格系统的松弛动力学。这样的系统可以放松到具有远距离纠缠的高度非平凡的纯净状态。在较大的系统大小的极限中，可以通过与局部杂质散射进行类比来找到耗散光谱的分析表达式。这使我们能够研究从扰动松弛到缓慢的量子 - 齐诺尼诺制度的交叉。我们还发现由于令人惊讶的阻抗匹配现象而导致加速放松政权的可能性。我们还研究了中间的时间行为，确定了像光锥这样的圆锥形区域内存在的长期存在的“预先化”状态。这种中间状态可以是准平台，并且与最终耗散稳态的纠缠特性可能非常不同。
Reservoir engineering lattice states using only localized engineered dissipation is extremely attractive from a resource point of view, but can suffer from long relaxation times. Here, we study the relaxation dynamics of bosonic lattice systems locally coupled to a single squeezed reservoir. Such systems can relax into a highly non-trivial pure states with long-range entanglement. In the limit of large system size, analytic expressions for the dissipation spectrum can be found by making an analogy to scattering from a localized impurity. This allows us to study the cross-over from perturbative relaxation to a slow, quantum-Zeno regime. We also find the possibility of regimes of accelerated relaxation due to a surprising impedance matching phenomena. We also study intermediate time behaviors, identifying a long-lived "prethermalized" state associated that exists within a light cone like area. This intermediate state can be quasi-stationary, and can very different entanglement properties from the ultimate dissipative steady state.
