论文标题
在开放的定期调制量子腔中混乱的自旋光态
Chaotic spin-photonic states in an open periodically modulated quantum cavity
论文作者
论文摘要
当应用于经典和量子的动态系统时，时间周期性调制可以产生复杂的非平衡状态，这些状态通常称为“混乱”。在统一的哈密顿框架中，这一现象在开放量子系统中被详细探讨了。在这里，我们考虑在漏水腔中出现的量子混沌状态时，当腔内光子模式与强度定期变化时，腔内光子模式相干。我们表明，当将单个自旋放置在腔体内并耦合到模式时，可以在常规和混乱方案之间进行中等转变 - 通过使用量子Lyapunov指数鉴定出来，因此可以使用来控制混乱程度。在实验中，可以通过分析光子发射统计数据来检测这些转变。
When applied to dynamical systems, both classical and quantum, time periodic modulations can produce complex non-equilibrium states which are often termed 'chaotic`. Being well understood within the unitary Hamiltonian framework, this phenomenon is less explored in open quantum systems. Here we consider quantum chaotic state emerging in a leaky cavity, when an intracavity photonic mode is coherently pumped with the intensity varying periodically in time. We show that a single spin, when placed inside the cavity and coupled to the mode, can moderate transitions between regular and chaotic regimes -- that are identified by using quantum Lyapunov exponents -- and thus can be used to control the degree of chaos. In an experiment, these transitions can be detected by analyzing photon emission statistics.
