Private Quantum Channels and the Cost of Randomizing Quantum Information

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dc.creatorMosca, Michele
dc.creatorTapp, Alain
dc.creatorde Wolf, Ronald
dc.date2000-03-22
dc.date2000-03-27
dc.date.accessioned2026-07-07T05:59:45Z
dc.date.available2026-07-07T05:59:45Z
dc.descriptionWe investigate how a classical private key can be used by two players, connected by an insecure one-way quantum channel, to perform private communication of quantum information. In particular we show that in order to transmit n qubits privately, 2n bits of shared private key are necessary and sufficient. This result may be viewed as the quantum analogue of the classical one-time pad encryption scheme. From the point of view of the eavesdropper, this encryption process can be seen as a randomization of the original state. We thus also obtain strict bounds on the amount of entropy necessary for randomizing n qubits.
dc.descriptionLaTeX, 10 pages. Minor changes in the typesetting and references
dc.identifierhttps://arxiv.org/abs/quant-ph/0003101
dc.identifierhttp://arxiv.org/abs/quant-ph/0003101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/88796
dc.subjectQuantum Physics
dc.titlePrivate Quantum Channels and the Cost of Randomizing Quantum Information
dc.typetext

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