Quantum-controlled measurement device for quantum-state discrimination
作者： Miloslav Dušek , Vladimír Bužek
DOI: 10.1103/PHYSREVA.66.022112
关键词: SIC-POVM 、 Quantum operation 、 Physics 、 Quantum information 、 One-way quantum computer 、 Quantum error correction 、 Quantum channel 、 Quantum mechanics 、 Quantum algorithm 、 Qubit 、 Topology
摘要: We propose a "programmable" quantum device that is able to perform specific generalized measurement from certain set of measurements depending on state "program register." In particular, we study situation when the programmable serves for unambiguous discrimination between nonorthogonal states. The particular pair states can be unambiguously discriminated specified by program qubit. probability successful not optimal all admissible pairs. However, some subsets it very close value.
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