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Blind quantum computation protocol in which Alice only makes measurements

Tomoyuki Morimae and Keisuke Fujii
Phys. Rev. A 87, 050301(R) – Published 13 May 2013
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Abstract

Blind quantum computation is a new secure quantum computing protocol which enables Alice (who does not have sufficient quantum technology) to delegate her quantum computation to Bob (who has a full-fledged quantum computer) in such a way that Bob cannot learn anything about Alice's input, output, and algorithm. In previous protocols, Alice needs to have a device which generates quantum states, such as single-photon states. Here we propose another type of blind computing protocol where Alice does only measurements, such as the polarization measurements with a threshold detector. In several experimental setups, such as optical systems, the measurement of a state is much easier than the generation of a single-qubit state. Therefore our protocols ease Alice's burden. Furthermore, the security of our protocol is based on the no-signaling principle, which is more fundamental than quantum physics. Finally, our protocols are device independent in the sense that Alice does not need to trust her measurement device in order to guarantee the security.

  • Received 2 August 2012

DOI:https://doi.org/10.1103/PhysRevA.87.050301

©2013 American Physical Society

Authors & Affiliations

Tomoyuki Morimae1,2 and Keisuke Fujii3,4,5

  • 1ASRLD Unit, Gunma University, 1-5-1 Tenjin-cho Kiryu-shi Gunma-ken, 376-0052, Japan
  • 2Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom
  • 3The Hakubi Center for Advanced Research, Kyoto University, Yoshida-Ushinomiya-cho, Sakyo-ku, Kyoto 606-8302, Japan
  • 4Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
  • 5Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan

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Issue

Vol. 87, Iss. 5 — May 2013

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