| 摘要 |
PROBLEM TO BE SOLVED: To provide a quantum entangled photon pair generation device which is capable of easily properly selecting and generating a polarization quantum entangled photon pair as well as a time position quantum entangled photon pair.SOLUTION: The quantum entangled photon pair generation device includes an excitation light pulse shaping unit 10-1, an optical interferometer unit 20-1, and a quantum entangled photon pair extraction unit 30-1. The excitation light pulse shaping unit receives a linearly polarized light pulse to select and output one of a polarized excitation light pulse pair being a seed light pulse of a polarization quantum entangled photon pair and a double excitation light pulse pair being a seed light pulse of a time position quantum entangled photon pair. The optical interferometer unit receives the polarized excitation light pulse pair or the double excitation light pulse pair to output a correlation photon pair comprising a signal photon and an idler photon on the basis of a parametric fluorescence process. The quantum entangled photon pair extraction unit selects wavelength components corresponding to respective photons of the quantum entangled photon pair and spatially separates them to output the result as a polarization quantum entangled photon pair or a time position quantum entangled photon pair. |
