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Publication: Photon Emission and Absorption of a Single Ion Coupled to an Optical-Fiber Cavity

Prof. Köhl at University of Bonn publishes his results in PRL.

2014.12.29 | Celia Haldan Voetmann

Prof. Michael Köhl


M. Steiner [1], H. M. Meyer [1,2], J. Reichel [3], and M. Köhl [1,2]


[1] Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
[2] Physikalisches Institut, University of Bonn, Wegelerstrasse 8, 53115 Bonn, Germany
[3] Laboratoire Kastler Brossel, École Normale Supérieure, Université Pierre et Marie Curie–Paris 6, CNRS, 24 Rue Lhomond, 75005 Paris, France

Corresponding author: hmeyer@physik.uni‑


We present a light-matter interface which consists of a single 174Yb+ ion coupled to an optical fiber cavity. We observe that photons at 935 nm are mainly emitted into the cavity mode and that correlations between the polarization of the photon and the spin state of the ion are preserved despite the intrinsic coupling into a single-mode fiber. Complementary, when a faint coherent light field is injected into the cavity mode, we find enhanced and polarization dependent absorption by the ion.

Reference: Physical Review Letters, Volume 133, 263003 (2014)

Doi: 10.1103/PhysRevLett.113.263003

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