Mixed quantum states in higher categories

Chris Heunen, Jamie Vicary, Linde Wester

Research output: Chapter in Book/Report/Conference proceedingConference contribution


There are two ways to describe the interaction between classical and quantum information categorically: one based on completely positive maps between Frobenius algebras, the other using symmetric monoidal 2-categories. This paper makes a first step towards combining the two. The integrated approach allows a unified description of quantum teleportation and classical encryption in a single 2-category, as well as a universal security proof applicable simultaneously to both scenarios.
Original languageEnglish
Title of host publicationProceedings QPL 2014
Number of pages12
Publication statusPublished - 6 May 2014

Publication series



  • quant-ph
  • cs.LO

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