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arXiv · 2307.14780

Resonance interaction due to quantum coherence

Jiawei Hu·Hongwei Yu
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Abstract

The interaction energy between two atoms is crucially dependent on the quantum state of the two-atom system. In this paper, it is demonstrated that a steady resonance interaction energy between two atoms exists when the atoms are in a certain type of coherent superposition of single-excitation states. The interaction is tree-level classical in the sense of the Feynman diagrams. A quantity called quantum classicality is defined in the present paper, whose nonzero-ness ensures the existence of this interaction. The dependence of the interatomic interaction on the quantum nature of the state of the two-atom system may potentially be tested with Rydberg atoms.

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Jiawei Hu, Hongwei Yu. 2023-07-27. Resonance interaction due to quantum coherence. https://doi.org/10.1002/prop.202300057

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