Comment on ``Scheme of the arrangement for attack on the protocol BB84"

Jonte R Hance*, John G Rarity

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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In a recent paper (\textit{Scheme of the arrangement for attack on the protocol BB84}, Optik 127(18):7083-7087, Sept 2016), a protocol was proposed for using weak measurement to attack BB84. This claimed the four basis states typically used could be perfectly discriminated, and so an interceptor could obtain all information carried. We show this attack fails when considered using standard quantum mechanics, as expected - such ``single-shot" quantum state discrimination is impossible, even using weak measurement.
Original languageEnglish
Article number167451
Number of pages3
Early online date17 Jun 2021
Publication statusPublished - 1 Oct 2021

Bibliographical note

Funding Information:
This work was supported by the Engineering and Physical Sciences Research Council (Grants EP/P510269/1 , EP/T001011/1 , EP/R513386/1 , EP/M013472/1 and EP/L024020/1 ).

Publisher Copyright:
© 2021 The Authors

Structured keywords

  • QETLabs
  • Bristol Quantum Information Institute
  • Photonics and Quantum


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