3 papers
quant-ph2020
Discrimination of symmetric states in operational probabilistic theory
Kenji Nakahira
A state discrimination problem in an operational probabilistic theory (OPT) is investigated in diagrammatic terms. It is well-known that, in the case of quantum theory, if a state…
quant-ph2018
Local unambiguous discrimination of symmetric ternary states
Kenji Nakahira, Kentaro Kato, Tsuyoshi Sasaki Usuda
We investigate unambiguous discrimination between given quantum states with a sequential measurement, which is restricted to local measurements and one-way classical communication.…
quant-ph2015
Optimal quantum state discrimination with confidentiality
Kenji Nakahira, Tsuyoshi Sasaki Usuda, Kentaro Kato
We investigate quantum state discrimination with confidentiality. observers share a given quantum state belonging to a finite set of known states. The observers want to determi…