toshiyuki tashima

J-GLOBAL         Last updated: Sep 20, 2019 at 23:43
toshiyuki tashima
Kyoto University

Research Interests


Published Papers

Toshiyuki Tashima, Hideaki Takashima, Shigeki Takeuchi
Optics Express 27, 27009-27016 (2019)      [Refereed]
Direct optical excitation of a nitrogen-vacancy (NV) center in nanodiamond by
light via a nanofiber is of interest for all-fiber-integrated quantum
applications. However, the background light induced by the excitation light via
the nanofiber is pr...
Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam
Hideaki Takashima, Atsushi Fukuda, Hironaga Maruya, Toshiyuki Tashima, Andreas W. Schell, and Shigeki Takeuchi
Optics Express, 27, 6792-6800 (2019)      [Refereed]
Yuki Takeuchi, Nobuyuki Imoto, Toshiyuki Tashima
Phys. Rev. A 97, 042341 (2018)      [Refereed]
We analyze optimal schemes and also propose some practical schemes for the
nonlocal conversion from two shared Bell pairs to four-qubit entangled states
in optical quantum networks. In the analysis, we consider two-qubit operations
as nonlocal ope...
Toshiyuki Tashima, Hiroki Morishita, Norikazu Mizuochi
Phys. Rev. A 100, 023801 (2019)      [Refereed]
Quantum systems are currently gaining momentum, however, a general
"Single-Source Multi-Use" system for quantum-information processing and
networks does not yet exist. A virtual state, the so-called "dressed state," is
a potential host with an inc...
Lars Liebermeister, Niko Heinrichs, Florian Böhm, Peter Fischer, Martin Zeitlmair, Toshiyuki Tashima, Philipp Altpeter, Harald Weinfurter, Markus Weber
Efficient coupling of single quantum emitters to guided optical modes of
integrated optical devices is of high importance for applications in quantum
information science as well as in the field of sensing. Here we present the
design and fabricatio...

Conference Activities & Talks

Enhanced direct optical excitation of an NV center via Nanofiber Bragg-cavity: A numerical simulation
Toshiyuki Tashima, Hideaki Takashima, Shigeki Takeuchi
23 Jun 2019   
田嶌俊之, 森下弘樹, 水落憲和
応用物理学会秋季学術講演会   5 Sep 2018   
三間大輔, 森下弘樹, 田嶌俊之, 加藤宙光, 牧野俊晴, 山崎聡, 藤原正規, 水落憲和
応用物理学会春季学術講演会   5 Mar 2018   
森下弘樹, 田嶌俊之, 三間大輔, 加藤宙光, 牧野俊晴, 山崎聡, 藤原正規, 水落憲和
応用物理学会春季学術講演会   5 Mar 2018   
田嶌俊之, 丸谷浩永, 岩端祐介, 高島秀聡, 竹内繁樹
日本物理学会秋季大会   25 Sep 2017