Bell State Preparation using Pulsed Non-Degenerate Two-Photon Entanglement

Details Bell State Preparation using Pulsed Non-Degenerate Two-Photon Entanglement Bell State Preparation using Pulsed Non-Degenerate Two-Photon Entanglement

2000-07-19

arxiv.org/abs/quant-ph/0007067v2

PRA 63, 060301(R), (2001)

Physics

Quantum Physics

4 pages, submitted to PRL

Scientific paper

10.1103/PhysRevA.63.060301

We report a novel Bell state preparation experiment. High-purity Bell states are prepared by using femtosecond pulse pumped \emph{nondegenerate} collinear spontaneous parametric down-conversion. The use of femtosecond pump pulse {\em does not} result in reduction of quantum interference visibility in our scheme in which post-selection of amplitudes and other traditional mechanisms, such as, using thin nonlinear crystals or narrow-band spectral filters are not used. Another distinct feature of this scheme is that the pump, the signal, and the idler wavelengths are all distinguishable, which is very useful for quantum communications.

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