论文标题
分类开放量子标题系统的非时代和纠缠动力学
Classifying the non-time-local and entangling dynamics of an open qubit system
论文作者
论文摘要
我们研究与不同程度对称性相互作用产生的动力图家族。对于一个独立于时间的汉密尔顿人的家族，我们展示了对称性，强耦合，完美的纠缠，非马克维亚特征和非时光局部性之间的关系。我们表明，通过扰动初始环境状态，可以获得有效的时间本地描述，这些描述是降低动力学的非单明性但捕获基本的非单身特征。然后，我们考虑一种时间依赖的哈密顿量，该哈密顿量通过激活休眠的自由度来改变对称程度。在此示例中，我们发现单位降低的动态变化发生了巨大变化。当较大的系统动态尚不清楚时，这些结果可以告知开放系统有效理论的构建。
We study families of dynamical maps generated from interactions with varying degrees of symmetry. For a family of time-independent Hamiltonians, we demonstrate the relationship between symmetry, strong-coupling, perfect entanglers, non-Markovian features, and non-time-locality. We show that by perturbing the initial environment state, effective time-local descriptions can be obtained that are non-singular yet capture essential non-unitary features of the reduced dynamics. We then consider a time-dependent Hamiltonian that changes the degree of symmetry by activating a dormant degree of freedom. In this example we find that the one-qubit reduced dynamics changes dramatically. These results can inform the construction of effective theories of open systems when the larger system dynamics is unknown.
