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Following the lead of Cochrane, Milburn, and Munro [Phys. Rev. A {\bf 62},062307 (2000)], we investigate theoretically quantum teleportation by means ofthe number-sum and phase-difference variables. We study Fock-state entanglementgenerated by a beam splitter and show that two-mode Fock-state inputs can beentangled by a beam splitter into close approximations of maximally entangledeigenstates of the phase difference and the photon-number sum(Einstein-Podolsky-Rosen -- EPR -- states). Such states could be experimentallyfeasible with on-demand single-photon sources. We show that the teleportationfidelity can reach near unity when such ``quasi-EPR'' states are used as thequantum channel.Comment: 7 pages (two-column), 7 figures, submitted to Phys. Rev. A. Text  unmodified, postscript error correcte

Quantum teleportation with close-to-maximal entanglement from a beam splitter