Erratum: Measurement of the Bell operator and quantum teleportation [Phys. Rev. A51, R1727 (1995)]
Samuel L. Braunstein, Adrian B. Mann · Physical Review A · 1996
The reference list should be extended: Weinfurter 1 gave an analogous scheme using a multiport generalization of the Hong-Ou-Mandel interferometer. Instead of polarization entanglement this scheme used spatial entanglement. A maximum 50% relative efficiency was also found there for the linear optical elements involved. A further variation using pulsed sources 2 instead of time gating, as well as possible detection via up-conversion, has been investigated by Bennett et al. 3.