Localized multiphonon states in waveguide quantum optomechanics with spontaneously broken PT symmetry

  title={Localized multiphonon states in waveguide quantum optomechanics with spontaneously broken 
  author={Alexander V. Poshakinskiy and Ivan V. Iorsh and Alexander N. Poddubny},
  journal={Physical Review A},
We study theoretically two vibrating quantum emitters trapped near a one-dimensional waveguide and interacting with propagating photons. We demonstrate, that in the regime of strong optomechanical interaction the light-induced coupling of emitter vibrations can lead to formation of spatially localized vibration modes, exhibiting parity-time (PT ) symmetry breaking. These localized vibrations can be interpreted as topological defects in the quasiclassical energy spectrum. 
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