Coherent population oscillations and an effective spin-exchange interaction in a PT symmetric polariton mixture

2019/08/31 by P. A. Kalozoumis, G. M. Nikolopoulos, D. Petrosyan · 9 citations
Physics and Astronomy · #Amplitude #Dynamics (music) #Mechanical and Optical Resonators #Oscillation (cell signaling) #Polariton #Population #Quantum optics and atomic interactions #Stability (learning theory) #Strong Light-Matter Interactions #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1209/0295-5075/129/37003

published in Europhysics Letters (EPL) 129(3), 37003 (Institute of Physics) · 7 pages, 4 figures

openalex created_date 2019/08/13 · openalex publication_date 2020/02/27 · arxiv created 2020/06/06 · arxiv updated 2020/06/09 · openalex updated_date 2026/08/06

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 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.

Citations

• Quantum fluids of light
• Fidelity of quantum operations
• Making sense of non-Hermitian Hamiltonians
• Macroscopic quantum self-trapping and Josephson oscillations of exciton-polaritons
• Bose–Einstein condensation of exciton polaritons
• Complex Extension of Quantum Mechanics
• Room-temperature superfluidity in a polariton condensate
• Polariton condensation in S- and P-flatbands in a two-dimensional Lieb lattice