Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Tsuyoshi Nishioka"'
Autor:
Kazuyoshi Itoh, Eiji Yagyu, Tsuyoshi Nishioka, Yasunori Tokuda, Mitsuru Matsui, Tetsuyuki Kurata, Kohei Sugihara
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1444-1449
An effective method to analyze the origin of primary dark counts is presented for single-photon-detection avalanche photodiodes (APDs) operated in the gated Geiger modes. It is revealed that a band-to-band tunneling model reproduces the experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d7fb2dea6d22600a999d6731e43fb10
https://doi.org/10.1109/jqe.2010.2050765
https://doi.org/10.1109/jqe.2010.2050765
Autor:
Tsuyoshi Nishioka, Katsuhiro Shimizu
Publikováno v:
The Journal of The Institute of Image Information and Television Engineers. 63:292-298
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::762609cb7ee384764f251db895dc3b09
https://doi.org/10.3169/itej.63.292
https://doi.org/10.3169/itej.63.292
Autor:
Tsuyoshi Nishioka, Toshio Hasegawa, Alexandre Soujaeff, Shigeki Takeuchi, Mitsuru Matsui, Toyohiro Tsurumaru, Keiji Sasaki
Publikováno v:
Optics Express. 15(2):726-734
Quantum key distribution with pulsed heralded single photon source was performed over 40 km of fiber for the first time to our knowledge. QBER was measured to be 4.23% suggesting security against unconditional attack.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f96d7ec922a5b7b19766d7fd7a51ad9
http://hdl.handle.net/2115/49606
http://hdl.handle.net/2115/49606
Publikováno v:
Physics Letters A. 346:7-16
In a recent paper titled “Comment on: ‘How much security does the Y-00 protocol provide us?’ ” [H.P. Yuen, P. Kumar, E. Corndorf, Phys. Lett. A 346 (2005) 1–6], the authors critically examine our idea [T. Nishioka, T. Hasegawa, H. Ishizuka,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::858f46788116cd0688571222faadb0d3
https://doi.org/10.1016/j.physleta.2005.08.023
https://doi.org/10.1016/j.physleta.2005.08.023
Publikováno v:
The Computer Journal. 45:293-303
Efficient ID-based key sharing schemes are desired worldwide for secure communications on Internet and other networks. The Key Predistribution Systems (KPSs) are a large class of such key sharing schemes. The remarkable property of KPSs is that in or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc544cf4cfb0b641d238b33724e6ec29
https://doi.org/10.1093/comjnl/45.3.293
https://doi.org/10.1093/comjnl/45.3.293
Autor:
Mitsuru Hashida, Yoshinobu Takakura, Fumiyoshi Yamashita, Tsuyoshi Nishioka, Fuminori Sakurai
Publikováno v:
European Journal of Pharmaceutics and Biopharmaceutics. 52:165-172
Plasmid DNA–cationic liposome complexes (lipoplexes) accumulate in the lung to a great extent immediately after intravenous administration, and gene expression occurs predominantly in the lung. However, the detailed mechanisms underlying the lung a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f112aab25b5c2f672d2773d84d60dad
https://doi.org/10.1016/s0939-6411(01)00165-5
https://doi.org/10.1016/s0939-6411(01)00165-5
Publikováno v:
Progress of Theoretical Physics. 92:521-534
Unified theories applied to cosmology suffer generically from a problem of predicting time· dependent gauge coupling constants, which might be in conflict with observed no time-variability. A remedy is proposed by taking advantage of a rather unexpe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::551f962d270951a7b451bf427a02b899
https://doi.org/10.1143/ptp.92.521
https://doi.org/10.1143/ptp.92.521
Autor:
Tsuyoshi Nishioka, Sumio Wada
Publikováno v:
International Journal of Modern Physics A. :3933-3944
According to some of the recent analyses, the cosmological constant Λ may be extremely small but finite. The decaying cosmological constant model can naturally explain the smallness of Λ from the oldness of our universe, provided that some of the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46e0770bb923da2e4dc12447ddae9290
https://doi.org/10.1142/s0217751x93001594
https://doi.org/10.1142/s0217751x93001594
Autor:
Yasunori Fujii, Tsuyoshi Nishioka
Publikováno v:
Physics Letters B. 254:347-354
A theoretical model is proposed in which a decaying cosmological constant fills up the gap between Ω = 1 as expected from the inflationary scenario and the observed small value Ω ≲0.1.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc17a76d6cd9643fc1ccda1b44fab76a
https://doi.org/10.1016/0370-2693(91)91167-t
https://doi.org/10.1016/0370-2693(91)91167-t
Autor:
Tsuyoshi Nishioka, Mitsuru Matsui, Toshio Hasegawa, Shigeki Takeuchi, Toyohiro Tsurumaru, Keiji Sasaki, Alexandre Soujaeff
Publikováno v:
2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference.
Despite technically successful experiments, most of current quantum key distribution (QKD) systems based on the original BB84 protocols are insecure. The reason is the usage of weak coherent pulses (WCP) as pseudo single photon source (SPS), which al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1573061323fd8e93934c6dc4888d8ec
https://doi.org/10.1109/cleoe-iqec.2007.4387003
https://doi.org/10.1109/cleoe-iqec.2007.4387003