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All-photonic quantum repeaters

Author

Listed:
  • Koji Azuma

    (NTT Basic Research Laboratories, NTT Corporation)

  • Kiyoshi Tamaki

    (NTT Basic Research Laboratories, NTT Corporation)

  • Hoi-Kwong Lo

    (Center for Quantum Information and Quantum Control, University of Toronto)

Abstract

Quantum communication holds promise for unconditionally secure transmission of secret messages and faithful transfer of unknown quantum states. Photons appear to be the medium of choice for quantum communication. Owing to photon losses, robust quantum communication over long lossy channels requires quantum repeaters. It is widely believed that a necessary and highly demanding requirement for quantum repeaters is the existence of matter quantum memories. Here we show that such a requirement is, in fact, unnecessary by introducing the concept of all-photonic quantum repeaters based on flying qubits. In particular, we present a protocol based on photonic cluster-state machine guns and a loss-tolerant measurement equipped with local high-speed active feedforwards. We show that, with such all-photonic quantum repeaters, the communication efficiency scales polynomially with the channel distance. Our result paves a new route towards quantum repeaters with efficient single-photon sources rather than matter quantum memories.

Suggested Citation

  • Koji Azuma & Kiyoshi Tamaki & Hoi-Kwong Lo, 2015. "All-photonic quantum repeaters," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7787
    DOI: 10.1038/ncomms7787
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    Cited by:

    1. Pei Zeng & Hongyi Zhou & Weijie Wu & Xiongfeng Ma, 2022. "Mode-pairing quantum key distribution," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Lukas Husel & Julian Trapp & Johannes Scherzer & Xiaojian Wu & Peng Wang & Jacob Fortner & Manuel Nutz & Thomas Hümmer & Borislav Polovnikov & Michael Förg & David Hunger & YuHuang Wang & Alexander Hö, 2024. "Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    3. Francesco Chiti & Romano Fantacci & Roberto Picchi & Laura Pierucci, 2021. "Towards the Quantum Internet: Satellite Control Plane Architectures and Protocol Design," Future Internet, MDPI, vol. 13(8), pages 1-13, July.
    4. P. Laccotripes & T. Müller & R. M. Stevenson & J. Skiba-Szymanska & D. A. Ritchie & A. J. Shields, 2024. "Spin-photon entanglement with direct photon emission in the telecom C-band," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    5. Shuai Shi & Biao Xu & Kuan Zhang & Gen-Sheng Ye & De-Sheng Xiang & Yubao Liu & Jingzhi Wang & Daiqin Su & Lin Li, 2022. "High-fidelity photonic quantum logic gate based on near-optimal Rydberg single-photon source," Nature Communications, Nature, vol. 13(1), pages 1-6, December.

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