Resonance interaction due to quantum coherence

• URL: http://arxiv.org/abs/2307.14780v1
• Date: Thu, 27 Jul 2023 11:18:29 GMT
• Title: Resonance interaction due to quantum coherence
• Authors: Jiawei Hu, Hongwei Yu
• Abstract summary: The interaction energy between two atoms is crucially dependent on the quantum state of the two-atom system. 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.
• Score: 0.15229257192293197
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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