Type: Article
Publication Date: 2003-07-02
Citations: 47
DOI: https://doi.org/10.1103/physreva.68.013804
We implement experimentally methods to generate photon-number--path and polarization entangled photon pairs using ``beamlike'' type-II spontaneous parametric down-conversion, in which the signal-idler photon pairs are emitted as two separate circular beams with small emission angles rather than as two diverging cones.