Localized vibrational modes in waveguide quantum optomechanics with spontaneously broken PT symmetry

TL;DR

This paper theoretically investigates how strong optomechanical interactions in waveguide quantum systems can induce localized vibrational modes that break PT symmetry, revealing topological defect phenomena in the energy spectrum.

Contribution

It introduces the concept of light-induced localized vibrational modes with PT symmetry breaking in waveguide quantum optomechanics, a novel phenomenon not previously explored.

Findings

Localized vibrational modes form under strong optomechanical coupling

PT symmetry breaking occurs in the vibrational spectrum

Localized modes can be viewed as topological defects

Abstract

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.