On quantum teleportation with beam-splitter-generated entanglement

Details On quantum teleportation with beam-splitter-generated entanglement On quantum teleportation with beam-splitter-generated entanglement

2001-07-13

arxiv.org/abs/quant-ph/0107073v3

Expanded version in Phys. Rev. A 65 052313 (2002)

Physics

Quantum Physics

7 pages (two-column), 7 figures, submitted to Phys. Rev. A. Text unmodified, postscript error corrected

Scientific paper

10.1103/PhysRevA.65.052313

Following the lead of Cochrane, Milburn, and Munro [Phys. Rev. A {\bf 62}, 062307 (2000)], we investigate theoretically quantum teleportation by means of the number-sum and phase-difference variables. We study Fock-state entanglement generated by a beam splitter and show that two-mode Fock-state inputs can be entangled by a beam splitter into close approximations of maximally entangled eigenstates of the phase difference and the photon-number sum (Einstein-Podolsky-Rosen -- EPR -- states). Such states could be experimentally feasible with on-demand single-photon sources. We show that the teleportation fidelity can reach near unity when such ``quasi-EPR'' states are used as the quantum channel.

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