|Title:||Wigner representation for experiments on quantum cryptography using two-photon polarization entanglement produced in parametric down-conversion||Authors:||Casado, A.
Plácido Suarez, José
|UNESCO Clasification:||22 Física||Keywords:||Downconversion
|Issue Date:||2008||Publisher:||0953-4075||Journal:||Journal of Physics B: Atomic, Molecular and Optical Physics||Abstract:||In this paper, the theory of parametric down-conversion in the Wigner representation is applied to Ekert's quantum cryptography protocol. We analyse the relation between two-photon entanglement and (non-secure) quantum key distribution within the Wigner framework in the Heisenberg picture. Experiments using two-qubit polarization entanglement generated in nonlinear crystals are analysed in this formalism, along with the effects of eavesdropping attacks in the case of projective measurements.||URI:||http://hdl.handle.net/10553/53434||ISSN:||0953-4075||DOI:||10.1088/0953-4075/41/4/045501||Source:||Journal of Physics B: Atomic, Molecular and Optical Physics [ISSN 0953-4075], v. 41 (4), 045501, (Febrero 2008)|
|Appears in Collections:||Artículos|
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