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arXiv · 2602.23773

Entanglement dynamics for atoms near a reflecting boundary: Enhancement and suppression by environment-induced interactions

Ying Chen·Hongwei Yu·Jiawei Hu
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Abstract

We investigate how environment-induced interactions influence the entanglement dynamics of two atoms held at fixed positions near a perfectly reflecting boundary. Within the framework of open quantum systems, we explicitly incorporate the environment-induced energy shifts, including both atom-boundary contributions and an environment-induced atom-atom interaction, which are often neglected in previous studies. We show that, for any initial two-atom state, these energy-shift effects qualitatively and quantitatively modify the entanglement dynamics relative to treatments that omit them. Depending on the geometry and parameter regime, the environment-induced interactions can either enhance entanglement generation -- yielding a larger maximum concurrence and a longer entanglement lifetime -- or suppress it, reducing both the peak concurrence and the survival time. This behavior contrasts sharply with the free-space case, where the environment-induced atom-atom interaction affects entanglement generation only for a restricted class of initial states and does so in an exclusively assisting manner.

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Ying Chen, Hongwei Yu, Jiawei Hu. 2026-02-27. Entanglement dynamics for atoms near a reflecting boundary: Enhancement and suppression by environment-induced interactions. https://doi.org/10.1103/bcyl-6674

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