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arXiv · 1908.00851

Coherent population oscillations and an effective spin-exchange interaction in a $\mathcal{PT}$ symmetric polariton mixture

P. A. Kalozoumis·G. M. Nikolopoulos·D. Petrosyan
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Abstract

We study a two-species mixture of exciton-polaritons with self- and cross-interaction nonlinearities in a double well structure, in the presence of relaxation and continuous pumping. We identify the conditions that render the system parity-time ($\mathcal{PT}$) symmetric, and investigate its dynamic and static properties. We show that the system can exhibit long-term coherent oscillations of populations of the two polaritonic components between the two potential wells, and can simulate the dynamics of a pair of spin-1/2 particles (qubits) in the presence of exchange interaction.

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P. A. Kalozoumis, G. M. Nikolopoulos, D. Petrosyan. 2019-08-02. Coherent population oscillations and an effective spin-exchange interaction in a $\mathcal{PT}$ symmetric polariton mixture. https://doi.org/10.1209/0295-5075/129/37003

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