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.
Hybrid ququart-encoded quantum cryptography protected by Kochen-Specker contextuality / Adán, Cabello; D'Ambrosio, Vincenzo; Nagali, Eleonora; Sciarrino, Fabio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 84:3(2011).
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Titolo: | Hybrid ququart-encoded quantum cryptography protected by Kochen-Specker contextuality |
Autori: | |
Data di pubblicazione: | 2011 |
Rivista: | |
Citazione: | Hybrid ququart-encoded quantum cryptography protected by Kochen-Specker contextuality / Adán, Cabello; D'Ambrosio, Vincenzo; Nagali, Eleonora; Sciarrino, Fabio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 84:3(2011). |
Handle: | http://hdl.handle.net/11573/387183 |
Appartiene alla tipologia: | 01a Articolo in rivista |