Graphical calculus for quantum key distribution (Extended Abstract)

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Abstract

Controlled complementary measurements are key to quantum key distribution protocols, among many other things. We axiomatize controlled complementary measurements within symmetric monoidal categories, which provides them with a corresponding graphical calculus. We study the BB84 and Ekert91 protocols within this calculus, including the case where there is an intercept-resend attack.

Original languageEnglish
Pages (from-to)231-249
Number of pages19
JournalElectronic Notes in Theoretical Computer Science
Volume270
Issue number2
DOIs
StatePublished - 14 Feb 2011

Keywords

  • categorical semantics
  • complementary observables
  • graphical calculus
  • quantum key distribution

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