Unconditional privacy over channels which cannot convey quantum information

Karol Horodecki; Michał Horodecki; Paweł Horodecki; Debbie Leung; Jonathan Oppenheim

Unconditional privacy over channels which cannot convey quantum information

Abstract

Quantum cryptography enables one to verify that the state of the quantum system has not been tampered with and thus one can obtain privacy regardless of the power of the eavesdropper. All previous protocols relied on the ability to faithfully send quantum states or equivalently to share pure entanglement. Here we show this need not be the case-one can obtain verifiable privacy even through some channels which cannot be used to reliably send quantum states.

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Category:: Articles
Type:: artykuł w czasopiśmie z listy filadelfijskiej
Published in:: PHYSICAL REVIEW LETTERS no. 100, pages 0 - 4,
ISSN: 0031-9007
Language:: English
Publication year:: 2008
Bibliographic description:: Horodecki K., Horodecki M., Horodecki P., Leung D., Oppenheim J.: Unconditional privacy over channels which cannot convey quantum information// PHYSICAL REVIEW LETTERS. -Vol. 100., nr. iss. 11 (2008), s.0-4
Verified by:: Gdańsk University of Technology