Tunable partial polarization beam splitter and optomechanically induced Faraday effect

TL;DR

This paper introduces a tunable, all-optical partial polarization beam splitter in a vector optomechanical system, enabling polarization control and quantum walk implementation without auxiliary systems.

Contribution

It presents a novel, continuously tunable partial PBS and explores the optomechanically induced Faraday effect for polarization manipulation.

Findings

System functions as partial PBS when pumped vertically or horizontally.

Enables quantum walks in resonator arrays without auxiliary systems.

Demonstrates control over polarization angles in different coupling regimes.

Abstract

Polarization beam splitter (PBS) is a crucial photonic element to separately extract transverse-electric (TE) and transverse-magnetic (TM) polarizations from the propagating light fields. Here, we propose a concise, continuously tunable and all-optical partial PBS in the vector optomechanical system which contains two orthogonal polarized cavity modes with degenerate frequency. The results show that one can manipulate the polarization states of different output fields by tuning the polarization angle of the pumping field and the system function as partial PBS when the pump laser polarizes vertically or horizontally. As a significant application of the tunable PBS, we propose a scheme of implementing quantum walks in resonator arrays without the aid of other auxiliary systems. Furthermore, we investigate the optomechanically induced Faraday effect in the vector optomechanical system which enables arbitrary tailoring of the input lights and the behaviors of polarization angles of the output fields in the under couple, critical couple, and over couple regimes. Our findings prove the optomechanical system is a potential platform to manipulate the polarization states in multimode resonators and boost the process of applications related to polarization modulation.