Dicke time crystals in driven-dissipative quantum many-body systems

@article{Zhu2019DickeTC,
  title={Dicke time crystals in driven-dissipative quantum many-body systems},
  author={Bihui Zhu and Jamir Marino and Norman Y. Yao and Mikhail D. Lukin and Eugene A. Demler},
  journal={New Journal of Physics},
  year={2019},
  volume={21}
}
The Dicke model—a paradigmatic example of superradiance in quantum optics—describes an ensemble of atoms which are collectively coupled to a leaky cavity mode. As a result of the cooperative nature of these interactions, the system’s dynamics is captured by the behavior of a single mean-field, collective spin. In this mean-field limit, it has recently been shown that the interplay between photon losses and periodic driving of light–matter coupling can lead to time-crystalline-like behavior of… 

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