# Magnetic control of polariton spin transport

## TL;DR

This paper demonstrates how a magnetic field can fully control the polarization dynamics of exciton-polariton condensates in microcavities, affecting spin-beat frequency, spin Hall effect, and polarization patterns.

## Contribution

It introduces a theoretical model showing magnetic control over polariton spin transport, including effects on spin-beat frequency and polarization rotation.

## Key findings

- Magnetic field alters spin-beat frequency.
- Suppression of optical spin Hall effect observed.
- Polarization pattern rotation achieved theoretically.

## Abstract

We show the full control of the polarization dynamics of a propagating exciton-polariton condensate in a planar microcavity by using a magnetic field applied in the Voigt geometry. The change of the spin-beat frequency, the suppression of the optical spin Hall effect and the rotation of the polarization pattern by the magnetic field are theoretically reproduced by accounting for the magneto-induced mixing of exciton-polariton and dark, spin forbidden, exciton states.