Quantum-entangled photon pair

特許 権利維持 A method for generating a quantum-entangled photon pair is such that a biexciton in such a state that the angular momentum is 0 is generated through two-photon resonance induced by irradiating a semiconductor substance, e.g., CuCl, with two parent photons (angular frequency omegai). A photon pair is then generated by splitting the biexciton thus generated simultaneously into two photons (angular frequencies omegas and omegas').