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arXiv 1706.09025quant-ph
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碰撞模型中的量子非马尔可夫分段动力学

Quantum non-Markovian piecewise dynamics from collision models

Salvatore Lorenzo, Francesco Ciccarello, G. Massimo Palma, Bassano Vacchini

摘要:

最近,在服从封闭演化方程的开放量子系统中引入了一大类量子非马尔可夫分段动力学[B. Vacchini,Phys. Rev. Lett. 117,230401(2016)]。这些动力学已经被定义为量子跳跃之间的等待时间分布,以及描述跳跃效果和系统在它们之间演化的量子映射。在这里,我们提出了一个具有记忆的量子碰撞模型,其在连续时间限制下的约化动力学再现了上述一类非马尔可夫分段动力学,从而提供了一个明确的微观实现。

英文摘要:

Recently, a large class of quantum non-Markovian piecewise dynamics for an open quantum system obeying closed evolution equations has been introduced [B. Vacchini, Phys. Rev. Lett. 117, 230401 (2016)]. These dynamics have been defined in terms of a waiting-time distribution between quantum jumps, along with quantum maps describing the effect of jumps and the system's evolution between them. Here, we present a quantum collision model with memory, whose reduced dynamics in the continuous-time limit reproduces the above class of non-Markovian piecewise dynamics, thus providing an explicit microscopic realization.

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