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Hybrid ququart-encoded quantum cryptography protected by Kochen-Specker contextuality
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
2011 (engelsk)Inngår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 84, nr 3, s. 030302-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Quantum cryptographic protocols based on complementarity are not secure against attacks in which complementarity is imitated with classical resources. The Kochen-Specker (KS) theorem provides protection against these attacks, without requiring entanglement or spatially separated composite systems. We analyze the maximum tolerated noise to guarantee the security of a KS-protected cryptographic scheme against these attacks and describe a photonic realization of this scheme using hybrid ququarts defined by the polarization and orbital angular momentum of single photons.

sted, utgiver, år, opplag, sider
2011. Vol. 84, nr 3, s. 030302-
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URN: urn:nbn:se:su:diva-67269DOI: 10.1103/PhysRevA.84.030302ISI: 000294772000001OAI: oai:DiVA.org:su-67269DiVA, id: diva2:470955
Merknad
authorCount :4Tilgjengelig fra: 2011-12-30 Laget: 2011-12-27 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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