论文标题
用于开放量子系统的工程控制的二次模型
Quadratic Models for Engineered Control of Open Quantum Systems
论文作者
论文摘要
我们介绍了一个框架，以建模一类开放量子系统的演变，其环境会定期经历瞬时的非自动进化阶段。对于二次模型的特殊情况，我们展示了这种方法如何概括重复相互作用的形式主义，以保存系统环境相关性。此外，其连续的零周期限制提供了对小型系统的演变的自然描述，该系统与稳定的稳态中的大型环境相结合。我们探讨了这种方法在简单的跳环中对热化的说明应用中的优势和局限性，以及通过环境工程初始化量子链的问题。
We introduce a framework to model the evolution of a class of open quantum systems whose environments periodically undergo an instantaneous non-unitary evolution stage. For the special case of quadratic models, we show how this approach can generalise the formalism of repeated interactions to allow for the preservation of system-environment correlations. Furthermore, its continuous zero-period limit provides a natural description of the evolution of small systems coupled to large environments in negligibly perturbed steady states. We explore the advantages and limitations of this approach in illustrative applications to thermalisation in a simple hopping ring and to the problem of initialising a qubit chain via environmental engineering.
