Rome teleportation experiment analysed in the Wigner representation: the role of the zeropoint fluctuations in complete one-photon polarization-momentum Bell-state analysis

摘要

The Wigner representation of parametric down conversion in the Heisenbergpicture is applied to the study of the Rome teleportation experiment. Weinvestigate the physical meaning of the zeropoint inputs at the different areasof the experimental setup. In particular, we establish a quantitativerelationship between the zeropoint sets of modes that are needed for thepreparation of the quantum state to be teleported, the idle channels inside theone-photon polarization-momentum Bell-state analyser, and the possibility ofperforming teleportation of a polarization state whith certainty.