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

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

Abstract

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
JournalOptik
Volume243
Early online date17 Jun 2021
DOIs
Publication statusE-pub ahead of print - 17 Jun 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

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