Optomechanics with Cavity Polaritons: Dissipative Coupling and Unconventional Bistability

TL;DR

This paper investigates a hybrid optomechanical system with cavity polaritons, revealing dissipative and dispersive couplings that lead to unconventional bistability, with potential applications in quantum information processing.

Contribution

It introduces a novel hybrid system combining optomechanics and exciton-polaritons, demonstrating dissipative coupling effects and bistability beyond traditional Kerr nonlinearities.

Findings

Polaritons exhibit both dispersive and dissipative coupling to mechanical modes.

Bistability observed deviates from conventional Kerr-based systems.

System is a promising platform for polaritonic devices and quantum information applications.

Abstract

We study a hybrid system formed from an optomechanical resonator and a cavity mode strongly coupled to an excitonic transition inside a quantum well. We show that due to the mixing of cavity photon and exciton states, the emergent quasiparticles - polaritons - possess coupling to the mechanical mode of both dispersive and dissipative nature. We calculate the occupancies of polariton modes and reveal bistable behavior, which deviates from conventional Kerr nonlinearity or dispersive coupling cases due to the dissipative coupling. The described system serves as a good candidate for future polaritonic devices and solid state quantum information processing.