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Applied Physics B

, 122:36 | Cite as

Doubly heralded single-photon absorption by a single atom

  • J. Brito
  • S. Kucera
  • P. Eich
  • P. Müller
  • J. EschnerEmail author
Article
Part of the following topical collections:
  1. Quantum Repeaters: From Components to Strategies

Abstract

We report on a single-photon-to-single-atom interface, where a single photon generated by spontaneous parametric down-conversion (SPDC) is absorbed by a single trapped ion. The photon is heralded by its time-correlated partner generated in the SPDC process, while the absorption event is heralded by a single photon emitted in its course. Coincidence detection marks doubly heralded absorption, enabling photon-to-atom quantum state transfer (Kurz et al. in Nat Commun 5:5527, 2014; Müller and Eschner in Appl Phys B 114:303, 2013). Background in the coincidence measurement is strongly suppressed by a new method that discriminates real absorption events from dark-count-induced coincidences.

Keywords

Single Atom Photon Pair Quantum Network Dark Count Quantum State Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We acknowledge support by the BMBF (Verbundprojekt Q.com, CHIST-ERA project QScale), the German Scholars Organization/Alfried Krupp von Bohlen und Halbach-Stiftung, and the ESF (IOTA COST Action). J. Brito acknowledges support by CONICYT.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • J. Brito
    • 1
  • S. Kucera
    • 1
  • P. Eich
    • 1
  • P. Müller
    • 1
  • J. Eschner
    • 1
    Email author
  1. 1.ExperimentalphysikUniversität des SaarlandesSaarbrückenGermany

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