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arXiv · 1702.07413

Collective strong coupling of cold atoms to an all-fiber ring cavity

S. K. Ruddell·K. E. Webb·I. Herrera·A. S. Parkins·M. D. Hoogerland
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Abstract

We experimentally demonstrate a ring geometry all-fiber cavity system for cavity quantum electrodynamics with an ensemble of cold atoms. The fiber cavity contains a nanofiber section which mediates atom-light interactions through an evanescent field. We observe well-resolved, vacuum Rabi splitting of the cavity transmission spectrum in the weak driving limit due to a collective enhancement of the coupling rate by the ensemble of atoms within the evanescent field, and we present a simple theoretical model to describe this. In addition, we demonstrate a method to control and stabilize the resonant frequency of the cavity by utilizing the thermal properties of the nanofiber.

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S. K. Ruddell, K. E. Webb, I. Herrera, A. S. Parkins, M. D. Hoogerland. 2017-02-23. Collective strong coupling of cold atoms to an all-fiber ring cavity. https://arxiv.org/abs/1702.07413

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