Sedov D D, Kozin V K, Iorsh I V
Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia.
Science Institute, University of Iceland, Dunhagi-3, IS-107 Reykjavik, Iceland.
Phys Rev Lett. 2020 Dec 31;125(26):263606. doi: 10.1103/PhysRevLett.125.263606.
We present a direct mapping between the quantum optomechanical problem of the atoms harmonically trapped in the vicinity of a chiral waveguide and a generalized quantum Rabi model, and we discuss the analogy between the self-organization of atomic chains in photonic structures and Dicke-like quantum phase transitions in the ultrastrong coupling regime. We extend the class of the superradiant phase transitions for the systems possessing Z_{3} rather than parity Z_{2} symmetry and demonstrate the emergence of the multicomponent Schrödinger-cat ground states in these systems.
我们展示了手性波导附近谐波捕获原子的量子光机械问题与广义量子拉比模型之间的直接映射，并讨论了光子结构中原子链的自组织与超强耦合 regime 中类迪克态量子相变之间的类比。我们扩展了具有Z₃而非宇称Z₂对称性的系统的超辐射相变类别，并证明了这些系统中多分量薛定谔猫基态的出现。
