Electrical Control of Exciton-Polariton Condensate Josephson Junctions

We propose the electrical control of a device probing the Josephson effect in exciton-polariton (EP) condensates, which can be switched between various dynamical modes. We model the device by a four-component Gross-Pitaevskii equation assuming that ideal EP condensates are established with well-balanced pumping and dissipation. All the model parameters are calculated microscopically. In particular, we obtain the polariton tunneling strength across the junction as a second-order process of electron-hole pair tunneling. We find that the EP condensates can be manipulated through distinctive degrees of freedom not present in other coherent quantum systems, and the dynamics of EP Josephson junctions are far richer than that of the conventional superconducting junctions.