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Optik

Quantum steering in a PT -symmetric system of three cavities with a linear coupling between the active and passive cavities

Dong Hoang Minh, Vinh Le Duc, Quoc Khoa Doan, Trang Nguyen Thi Thu

Published Sep 9, 2023• 0 citations
Publisher
DOI
10.1016/j.ijleo.2023.171375

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We consider two PT-symmetric models, consisting of two or three single-mode cavities. In both models, the cavities are coupled to each other by linear interactions, forming a linear chain. Additionally, the first and last of such cavities interact with an environment. Since the models are PT-symmetric, they are described by non-Hermitian Hamiltonians that, for a specific range of system parameters, possess real eigenvalues. We show that in the models considered in the article, the steering generation process strongly depends on the coupling strengths and rates of the gains/losses in energy. Moreover, we find the values of parameters describing the system for which the steering appears.