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An elementary quantum network of single atoms in optical cavities

Author

Listed:
  • Stephan Ritter

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Christian Nölleke

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Carolin Hahn

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Andreas Reiserer

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Andreas Neuzner

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Manuel Uphoff

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Martin Mücke

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Eden Figueroa

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

  • Joerg Bochmann

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany
    Present address: Department of Physics, and California NanoSystems Institute, University of California, Santa Barbara, California 93106, USA.)

  • Gerhard Rempe

    (Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany)

Abstract

Quantum networks are distributed quantum many-body systems with tailored topology and controlled information exchange. They are the backbone of distributed quantum computing architectures and quantum communication. Here we present a prototype of such a quantum network based on single atoms embedded in optical cavities. We show that atom–cavity systems form universal nodes capable of sending, receiving, storing and releasing photonic quantum information. Quantum connectivity between nodes is achieved in the conceptually most fundamental way—by the coherent exchange of a single photon. We demonstrate the faithful transfer of an atomic quantum state and the creation of entanglement between two identical nodes in separate laboratories. The non-local state that is created is manipulated by local quantum bit (qubit) rotation. This efficient cavity-based approach to quantum networking is particularly promising because it offers a clear perspective for scalability, thus paving the way towards large-scale quantum networks and their applications.

Suggested Citation

  • Stephan Ritter & Christian Nölleke & Carolin Hahn & Andreas Reiserer & Andreas Neuzner & Manuel Uphoff & Martin Mücke & Eden Figueroa & Joerg Bochmann & Gerhard Rempe, 2012. "An elementary quantum network of single atoms in optical cavities," Nature, Nature, vol. 484(7393), pages 195-200, April.
  • Handle: RePEc:nat:nature:v:484:y:2012:i:7393:d:10.1038_nature11023
    DOI: 10.1038/nature11023
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    Cited by:

    1. Ming-Hao Jiang & Wenyi Xue & Qian He & Yu-Yang An & Xiaodong Zheng & Wen-Jie Xu & Yu-Bo Xie & Yanqing Lu & Shining Zhu & Xiao-Song Ma, 2023. "Quantum storage of entangled photons at telecom wavelengths in a crystal," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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