Angular Momentum-Dependent Spectral Shift in Chiral Vacuum Cavities

• URL: http://arxiv.org/abs/2307.14964v1
• Date: Thu, 27 Jul 2023 15:56:37 GMT
• Title: Angular Momentum-Dependent Spectral Shift in Chiral Vacuum Cavities
• Authors: Qing-Dong Jiang
• Abstract summary: We find an intriguing angular momentum-dependent shift in the spectra of bound states. Our approach surpasses conventional perturbative calculations and remains valid even in the strong-coupling limit.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Based on a previously proposed unitary transformation for cavity quantum electrodynamics, we investigate the spectral shift of an atom induced by quantum fluctuations in a chiral vacuum cavity. Remarkably, we find an intriguing angular momentum-dependent shift in the spectra of bound states. Our approach surpasses conventional perturbative calculations and remains valid even in the strong-coupling limit. In addition, we establish a cavity-interaction picture for calculating the chiral vacuum Rabi oscillation in the strong-coupling limit for a generic central potential, without using the rotating wave approximation. The anomalous spectral shift revealed in this study possesses both fundamental and practical significance and could be readily observed in experiments.

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