Probabilistic and approximate masking of quantum information

Mao Sheng Li, Kavan Modi

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1 Citation (Scopus)


The no-masking theorem states that it is impossible to encode an arbitrary quantum state into the correlations between two subsystems so that no original information about the state is accessible in the marginal state of either subsystem. In this paper, we generalize this theorem to allow for failure of the protocol. We then bound the performance of a masking protocol when we are allowed a (probabilistic) approximate protocol.

Original languageEnglish
Article number022418
Number of pages6
JournalPhysical Review A
Issue number2
Publication statusPublished - 24 Aug 2020

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