Patent ID: 7486433

Claim:
A high-luminance quantum correlation photon beam generator for forming photon beams delivering a plurality of quantum-correlated photon pairs, the high-luminance quantum correlation photon beam generator comprising: a laser light source operable to emit a laser light to be used as an optical pump; a non-linear crystal operable to receive the laser light to be used as the optical pump emitted from the laser light source and generate, from the received laser light to be used as the optical pump, a pair of photons including a signal photon and an idler photon, the signal photon and the idler photon being emitted into a pair of annular non-concentric hollow-cone beams as a signal photon beam and an idler photon beam, respectively; beam splitting means operable to split the signal photon beam from the idler photon beam; a mode inverter operable to rotate one of the signal photon beam and the idler photon beam 180° around a geometric center thereof; phase adjusting means operable to adjust phases of another of the signal photon beam and the idler photon beam based on an optical time delay; and beam coupling means operable to overlay the signal photon beam with the idler photon beam received by the beam coupling means in a common annular shape to bring the overlayed signal photon beam and idler photon beam into a quantum correlated state.