Patent ID: 9030731
Filing Date: 2015-05-12
Classification: G02F,G06N

Abstract:
1. A quantum entangled photon pair generator comprising: an excitation optical pulse shaper receiving a linearly polarized optical pulse, and selectively outputting either one of a polarization excitation optical pulse pair to be a seedlight pulse for a polarization entangled photon pair and a consecutive excitation optical pulse pair to be a seedlight pulse for a time-bin entangled photon pair, pulses of the polarization excitation optical pulse pair having substantially a same peak intensity and respective polarization directions orthogonal to each other, pulses of the consecutive excitation optical pulse pair having substantially a same peak intensity and being linearly polarized to appear at different positions on a time axis; an optical interferometer receiving the polarization excitation optical pulse pair or the consecutive excitation optical pulse pair, and outputting a correlated photon pair which includes a signal photon and an idler photon generated through a parametric fluorescence process; and a quantum entangled photon pair extractor receiving an output light of said optical interferometer, and spatially extracting wavelength components corresponding to the signal photon and the idler photon to output the extracted wavelength components as the polarization entangled photon pair or the time-bin entangled photon pair.