Quantum secure communication wiretap detection method based on five-qubit Cluster state

The invention discloses a quantum secure communication wiretap detection method. The quantum secure communication wiretap detection method is characterized in that a five-qubit Cluster quantum state serving as detection particles is randomly inserted into a particle flow of quantum secure communication, so as to improve wiretap detection efficiency; after a receiver receives all particles, the corresponding detection particles are extracted so as to carry out state measurement, an information entropy method is adopted, and contrastive analysis is carried out on a constrained relationship between the detected probability after the receiver wiretaps and the wiretapped information content; and compared with a result obtained by an EPR(electron paramagnetic resonance) wiretap detection method adopted by an existing protocol, the superiority of the detection method provided by the invention is proved.