Quantum entanglement generation system, entanglement generation method

摘要

PROBLEM TO BE SOLVED: To provide a quantum tangle generation system capable of attaining an efficiency close to a theoretical limit in a case where kinds of error is not limited because no limitation is paused on kinds of error.;SOLUTION: A transmission device includes a first quantum tangle generation section in which a quantum tangle state is generated between a quantum bit A and optical pulse μ, and the optical pulse μ is transmitted to a reception device. The reception device includes a second quantum tangle generation section for generating a quantum tangle state, a detection light generation section which receives optical pulses ν₁ and ν₂ and generates optical pulses ν₃ and ν₄, a detection section which measures a value dependent on the number of photons of the optical pulses ν₃ and ν₄, and a determination section which determines success of sharing of quantum tangle when it is estimated that "there is a difference between the number of photons contained in the optical pulse ν₃ and the optical pulse ν₄" based on the value dependent on the number of photons of the optical pulse ν₃ and ν₄, and determines failure in sharing of quantum tangle when it is estimated that "there is no difference in the number of photons contained in the optical pulse ν₃ and the optical pulse ν₄".;COPYRIGHT: (C)2013,JPO&INPIT