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Chaotic spin-photonic states in an open periodically modulated quantum cavity

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 نشر من قبل Mikhail Ivanchenko Dr.
 تاريخ النشر 2020
  مجال البحث فيزياء
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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.



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