Phonon-mediated Josephson oscillations in excitonic and polaritonic condensates

TL;DR

This paper theoretically investigates how exciton-phonon interactions influence Josephson effects, including tunneling, self-trapping, and polarization separation, revealing bistability and oscillation regimes in excitonic and polaritonic condensates.

Contribution

It introduces a theoretical analysis of phonon effects on Josephson phenomena in excitonic systems, highlighting new bistability and oscillation behaviors.

Findings

Bistability arising from exciton-exciton interactions.

Regimes of self-sustained regular and chaotic oscillations.

Phonon-induced dephasing impacts Josephson tunneling and polarization.

Abstract

We analyze theoretically the role of the exciton-phonon interactions in phenomena related to the Josephson effect between two spatially separated exciton and exciton-polariton condensates. We consider the role of the dephasing introduced by phonons in such phenomena as Josephson tunneling, self-trapping and spontaneous polarization separation. In the regime of cw pumping we find a remarkable bistability effect arising from exciton- exciton interactions as well as regimes of self- sustained regular and chaotic oscillations.