Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/53432
Title: Wigner representation for entanglement swapping using parametric down conversion: the role of vacuum fluctuations in teleportation
Authors: Casado, A.
Guerra, S.
Placido, J. 
Keywords: Quantum Teleportation
Delayed-Choice
States
Communication
Cryptography, et al
Issue Date: 2015
Publisher: 0950-0340
Journal: Journal of Modern Optics 
Abstract: We apply the Wigner formalism of quantum optics in the Heisenberg picture to study the role of the zeropoint field fluctuations in entanglement swapping produced via parametric down conversion. It is shown that the generation of mode entanglement between two initially non-interacting photons is related to the quadruple correlation properties of the electromagnetic field, through the stochastic properties of the vacuum. The relationship between the process of transferring entanglement and the different zeropoint inputs at the non-linear crystal and the Bell-state analyser is emphasized.
URI: http://hdl.handle.net/10553/53432
ISSN: 0950-0340
DOI: 10.1080/09500340.2014.983571
Source: Journal Of Modern Optics[ISSN 0950-0340],v. 62 (5), p. 377-386
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