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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5930
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dc.contributor.authorShenoy, Akshata H.-
dc.contributor.authorSrikanth, R.-
dc.contributor.authorSrinivas, T.-
dc.date.accessioned2014-07-23T06:12:11Z-
dc.date.available2014-07-23T06:12:11Z-
dc.date.issued2013-09-
dc.identifier.citationEurophysics Letters, 2013, Vol. 103, p. 60008en
dc.identifier.issn0295-5075-
dc.identifier.issn1286-4854 (Online).-
dc.identifier.urihttp://hdl.handle.net/2289/5930-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractIn counterfactual quantum key distribution (QKD), two remote parties can securely share random polarization-encoded bits through the blocking rather than the transmission of particles. We propose a semi-counterfactual QKD, i.e., one where the secret bit is shared, and also encoded, based on the blocking or non-blocking of a particle. The scheme is thus semi-counterfactual and not based on polarization encoding. As with other counterfactual schemes and the Goldenberg-Vaidman protocol, but unlike BB84, the encoding states are orthogonal and security arises ultimately from single-particle non-locality. Unlike any of them, however, the secret bit generated is maximally indeterminate until the joint action of Alice and Bob. We prove the general security of the protocol, and study the most general photon-number–preserving incoherent attack in detail.en
dc.language.isoenen
dc.publisherIOP Publishing Ltd.en
dc.relation.urihttp://arxiv.org/abs/1307.7551en
dc.relation.urihttp://dx.doi.org/10.1209/0295-5075/103/60008en
dc.rights2013 EPLAen
dc.titleSemi-counterfactual cryptographyen
dc.typeArticleen
Appears in Collections:Research Papers (LAMP)

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