| 摘要 |
PURPOSE: An interferometer controlling the coherence of a pair of photons and a method thereof is provided to control the coherence of the pair of photons and possibilities that the pair of the photons comes out through a first outlet or a second outlet of a second interferometer beam splitter. CONSTITUTION: An interferometer controlling the coherence of a pair of photons comprises light sources(51,52), a first interference member(Ia) and a second interference member(Is). The lights sources are formed in order to generate first and second pump pulses coherent to each other and duration is transmitted by the delay. The first interference member receives the first pump pulse and generates an antisymmetric state having two coherent photons. The second interference member receives the second pump pulse and generates a symmetric state having two coherent photons. [Reference numerals] (51) Laser |
