Polariton multistability in a nonlinear optomechanical cavity

Vijay Bhatt; Surabhi Yadav; Pradip K Jha; Aranya B Bhattacherjee

doi:10.1088/1361-648X/ac0ea9

Polariton multistability in a nonlinear optomechanical cavity

J Phys Condens Matter. 2021 Jul 14;33(36). doi: 10.1088/1361-648X/ac0ea9.

Authors

Vijay Bhatt¹, Surabhi Yadav², Pradip K Jha¹, Aranya B Bhattacherjee²

Affiliations

¹ Department of Physics, DDU College, University of Delhi, New Delhi 110078, India.
² Department of Physics, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Hyderabad-500078, India.

PMID: 34171855
DOI: 10.1088/1361-648X/ac0ea9

Abstract

We theoretically study the polariton multistability in a solid state based optomechanical resonator embedded with a quantum well and aχ⁽²⁾second order nonlinear medium. The excitonic transition inside the quantum well is strongly coupled to the optical cavity mode. The polariton formed due to the mixing of cavity photons and exciton states are coupled to the mechanical mode which gives rise to the bistable behavior. A transition from bistability to tristability occurs in the presence of a strongχ⁽²⁾nonlinearity. Switching between bistability and tristability can also be controlled using exciton-cavity and optomechanical coupling making the system highly tunable. Tristability appears at low input power making it a suitable candidate for polaritonic devices which requires low input power.

Keywords: multistability; nonlinear; optomechanical; polariton.