Boosting Entanglement Between Exciton-Polaritons with On-Off Switching of Josephson Coupling

TL;DR

This paper demonstrates that on-off switching of Josephson coupling in coupled microcavities significantly enhances entanglement generation between exciton-polaritons by increasing system nonlinearity, with broad potential applications.

Contribution

It introduces a novel modulation technique for Josephson coupling that substantially improves entanglement in exciton-polariton systems compared to constant coupling.

Findings

Enhanced entanglement through coupling modulation

Substantial improvement over constant coupling

Potential applications in nonlinear bosonic systems

Abstract

We show that the appropriate on-off switching of Josephson coupling between exciton-polaritons in coupled semiconductor microcavities can reveal the full capacity for generating entanglement with a recently proposed method which essentially enhances the nonlinearity of the system. The improvement achieved with this simple modulation of the coupling is substantial over the case where it is kept constant. The suggested procedure is expected to find also application in other research areas, where nonlinear interacting bosons are encountered.