PROBLEM TO BE SOLVED: To provide a quantum teleportation optical circuit, stably operating, portable, and free from alignment.;SOLUTION: Two pieces of squeezed light from two squeezed light sources and laser beams coherent with two pieces of the squeezed light are introduced into a quantum teleportation optical circuit. Two pieces of the squeezed light introduced from input terminals SQ1, SQ2 are incident on a Mach-Zehnder interferometer 101-1 whose branch ratio of two outputs is 50:50. Two pieces of output light of the Mach-Zehnder interferometer are incident on different Mach-Zehnder interferometers 101-2, 102-1. The quantum teleportation optical circuit is configured by multiplexing a plurality of coherent laser beams having quantum mechanics correlation via the Mach-Zehnder interferometers 101-2 to 101-5 and 102-1 to 102-3.;COPYRIGHT: (C)2015,JPO&INPIT
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