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Source-device-independent heterodyne-based quantum random number generator at 17 Gbps

Author

Listed:
  • Marco Avesani

    (Università degli Studi di Padova)

  • Davide G. Marangon

    (Università degli Studi di Padova)

  • Giuseppe Vallone

    (Università degli Studi di Padova
    Istituto di Fotonica e Nanotecnologie—CNR)

  • Paolo Villoresi

    (Università degli Studi di Padova
    Istituto di Fotonica e Nanotecnologie—CNR)

Abstract

Random numbers are commonly used in many different fields, ranging from simulations in fundamental science to security applications. In some critical cases, as Bell’s tests and cryptography, the random numbers are required to be both private and to be provided at an ultra-fast rate. However, practical generators are usually considered trusted, but their security can be compromised in case of imperfections or malicious external actions. In this work we introduce an efficient protocol which guarantees security and speed in the generation. We propose a source-device-independent protocol based on generic Positive Operator Valued Measurements and then we specialize the result to heterodyne measurements. Furthermore, we experimentally implemented the protocol, reaching a secure generation rate of 17.42 Gbit/s, without the need of an initial source of randomness. The security of the protocol has been proven for general attacks in the finite key scenario.

Suggested Citation

  • Marco Avesani & Davide G. Marangon & Giuseppe Vallone & Paolo Villoresi, 2018. "Source-device-independent heterodyne-based quantum random number generator at 17 Gbps," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07585-0
    DOI: 10.1038/s41467-018-07585-0
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