Method of discriminating asymmetric quantum channel

摘要

The present invention may provide a method for discriminating an asymmetric quantum channel without clear information about quantum entanglement. The method according to the present invention comprises: an output state measuring process of measuring an output state (Nun(ρ_0)) of a quantum channel having an input state (ρ0); an output state determining process of determining whether the output state (Nun(ρ_0)) belongs to a set of specific output states capable of unambiguous discrimination of a quantum channel (UDQC); and a channel discrimination process of determining that the quantum channel discrimination is successful when the output state (Nun(ρ_0)) belongs to the set of the specific output states.