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Long-distance teleportation of qubits at telecommunication wavelengths

Author

Listed:
  • I. Marcikic

    (University of Geneva)

  • H. de Riedmatten

    (University of Geneva)

  • W. Tittel

    (University of Geneva
    Institute for Physics and Astronomy, University of Aarhus)

  • H. Zbinden

    (University of Geneva)

  • N. Gisin

    (University of Geneva)

Abstract

Matter and energy cannot be teleported (that is, transferred from one place to another without passing through intermediate locations). However, teleportation of quantum states (the ultimate structure of objects) is possible1: only the structure is teleported—the matter stays at the source side and must be already present at the final location. Several table-top experiments have used qubits2,3,4,5,6,7 (two-dimensional quantum systems) or continuous variables8,9,10 to demonstrate the principle over short distances. Here we report a long-distance experimental demonstration of probabilistic quantum teleportation. Qubits carried by photons of 1.3 µm wavelength are teleported onto photons of 1.55 µm wavelength from one laboratory to another, separated by 55 m but connected by 2 km of standard telecommunications fibre. The first (and, with foreseeable technologies, the only) application of quantum teleportation is in quantum communication, where it could help to extend quantum cryptography to larger distances11,12,13.

Suggested Citation

  • I. Marcikic & H. de Riedmatten & W. Tittel & H. Zbinden & N. Gisin, 2003. "Long-distance teleportation of qubits at telecommunication wavelengths," Nature, Nature, vol. 421(6922), pages 509-513, January.
    • Handle: RePEc:nat:nature:v:421:y:2003:i:6922:d:10.1038_nature01376
    DOI: 10.1038/nature01376
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    Cited by:

    1. Xinchao Ruan & Hang Zhang & Wenqi Peng & Hui Xian & Yiwu Zhu & Wei Zhao & Sha Xiong, 2023. "Free-Space Quantum Teleportation with Orbital Angular Momentum Multiplexed Continuous Variable Entanglement," Mathematics, MDPI, vol. 11(14), pages 1-17, July.

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