Quantum entangled photon pair amplification device and entangled photon pair amplification method

摘要

PROBLEM TO BE SOLVED: To provide a quantum entangled photon pair amplification device and a quantum entangled photon pair amplification method capable of amplifying a quantum entangled photon pair without closing a system for amplifying the quantum entangled photon pair. A quantum entangled photon pair amplification device 10 comprises a light source 11, a polarizing beam splitter 14 that separates incident light into two lights, and PPKTP18 that generates a pair of quantum entangled photon pairs from the incident light. A retroreflector 22 that reflects the incident light so as to output the reflected light from a position different from the position where the light is incident, and a half-wave plate 20 that controls the phase difference between the lights are provided. .. [Selection diagram] Fig. 1