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

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

32 Citations (Scopus)


Large-scale quantum networks could allow a wide variety of applications in quantum computing and simulation. Here we demonstrate the operation of a single node for use in such a network. We employ 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 collective enhancement of the coupling rate by the ensemble of atoms, and present a simple theoretical model to describe this. In addition, we stabilize the cavity resonant frequency by utilizing the thermal properties of the nanofiber. This work represents an important step toward implementing a large-scale all-fiber quantum network.

Original languageEnglish
Pages (from-to)576-579
Number of pages4
Issue number5
Publication statusPublished - 2017 May 20
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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