Masking Quantum Information is Impossible

Modi, Kavan ; Pati, Arun Kumar ; Sen(De), Aditi ; Sen, Ujjwal (2018) Masking Quantum Information is Impossible Physical Review Letters, 120 (23).

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Official URL: https://doi.org/10.1103%2Fphysrevlett.120.230501

Abstract

Classical information encoded in composite quantum states can be completely hidden from the reduced subsystems and may be found only in the correlations. Can the same be true for quantum information? If quantum information is hidden from subsystems and spread over quantum correlation, we call it as masking of quantum information. We show that while this may still be true for some restricted sets of non-orthogonal quantum states, it is not possible for arbitrary quantum states. This result suggests that quantum qubit commitment -- a stronger version of the quantum bit commitment is not possible in general. Our findings may have potential applications in secret sharing and future quantum communication protocols.

Item Type:Article
ID Code:125734
Deposited On:12 Oct 2022 09:29
Last Modified:12 Oct 2022 09:29

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