The quantum key distribution for multiparty is one of the essential subjects of study.
Especially, without using entangled states, performing the quantum key distribution for …

The problem of non-orthogonal state discrimination underlies crucial quantum information
tasks, such as cryptography and computing protocols. Therefore, it is decisive to find optimal …

The measurement of quantum states is one of the most important problems in quantum
mechanics. We introduce a quantum state tomography technique in which the state of a …

Recently, JA Bergou et al. proposed sequential state discrimination as a new quantum state
discrimination scheme. In the scheme, by the successful sequential discrimination of a qubit …

Sequential state discrimination is a strategy for quantum state discrimination of a sender's
quantum states when N receivers are separately located. In this report, we propose optical …

Recently, sequential state discrimination, as a quantum-key distribution protocol, has been
proposed for multiple receivers. A previous study [JA Bergou, Phys. Rev. Lett. 111, 100501 …

In a recent paper [Phys. Rev. Lett. 111, 100501 (2013) 10.1103/PhysRevLett. 111.100501],
a scheme was proposed where subsequent observers can extract unambiguous information …

Quantum state discrimination of coherent states has been one of important problems in
quantum information processing. Recently, R. Han et al. showed that minimum error …

Sequential state discrimination is a strategy for N separated receivers. As sequential state
discrimination can be applied to multiparty quantum key distribution (QKD), it has become …

We relate the the distinguishability of quantum states with their robustness of the
entanglement, where the robustness of any resource quantifies how tolerant it is to noise. In …