518 citations
- Aichi Prefectural UniversityJP8 papers
- Hitachi (Japan)JP5 papers
- Chuo UniversityJP4 papers
- Japan Science and Technology AgencyJP4 papers
- Panasonic (Japan)JP3 papers
- Nagoya Institute of TechnologyJP2 papers
- The University of OsakaJP2 papers
- The University of TokyoJP2 papers
- Alcatel-Lucent (France)FR1 paper
- California Institute of TechnologyUS1 paper
- Hong Kong Baptist UniversityHK1 paper
- Kyoto UniversityJP1 paper
7 papers · 1 filter
Towards Quantum Enigma Cipher III -Communication performance-
Osamu Hirota
Cloud computing system based on data centers has recently attracted considerable attention. In that system, all data are communicated via a high speed optical network between a cus…
Towards Quantum Enigma Cipher II-A protocol based on quantum illumination-
Osamu Hirota
This research note II introduces a way to understand a basic concept of the quantum enigma cipher. The conventional cipher is designed by a mathematical algorithm and its security…
Finding optimal solutions for generalized quantum state discrimination problems
Kenji Nakahira, Tsuyoshi Sasaki Usuda, Kentaro Kato
We try to find an optimal quantum measurement for generalized quantum state discrimination problems, which include the problem of finding an optimal measurement maximizing the aver…
Quasi-Bell entangled coherent states and its quantum discrimination problem in the presence of thermal noise
Kentaro Kato
The so-called quasi-Bell entangled coherent states in a thermal environment are studied. In the analysis, we assume thermal noise affects only one of the two modes of each state. F…
Continuous variable entanglement on a chip
Genta Masada, Kazunori Miyata, Alberto Politi +3
Encoding quantum information in continuous variables (CV)---as the quadrature of electromagnetic fields---is a powerful approach to quantum information science and technology. CV e…
Optimal discrimination of quantum states on a two-dimensional Hilbert space by local operations and classical communication
Kenji Nakahira, Tsuyoshi Sasaki Usuda
We study the discrimination of multipartite quantum states by local operations and classical communication. We derive that any optimal discrimination of quantum states spanning a t…