论文标题
碰撞模型中自旋系统的量子非平稳现象
Quantum non-stationary phenomena of spin systems in collision models
论文作者
论文摘要
我们研究了碰撞模型（CM）框架中三方自旋1/2系统中的非平稳现象。在对马尔可夫和非马克维亚案例的系统环境碰撞引入耗散后，我们发现系统动力学中长期振荡的出现以及子系统之间的同步。我们将CM描述和量子主方程在连续的时间限制中连接，并通过Liouvillian Spectrum分析来解释稳定振荡的存在。研究热性质和相关性的时间依赖性，特别是我们讨论了违反非马克维亚动力学原理的可能性。此外，我们发现集体耗散的不完美可以通过我们CM中相互作用序列的随机性来补偿。
We investigate the non-stationary phenomenon in a tripartite spin-1/2 system in the collision model (CM) framework. After introducing the dissipation through the system-environment collision for both Markovian and non-Markovian cases, we find the emergence of long-time oscillation in the dynamics of the system and the synchronization among subsystems. We connect the CM description and the quantum master equation in the continuous time limit and explain the existence of the stable oscillation by means of Liouvillian spectrum analysis. The time-dependence of the thermal property and the correlations are investigated, in particular we discuss the possibility of violation of the Landauer's principle in non-Markovian dynamics. In addition, we find that the imperfection of collective dissipation can be compensated by the randomness of the interaction sequence in our CM.
