Tomohiro Otsuka

J-GLOBAL         Last updated: Jul 25, 2019 at 16:08
 
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Name
Tomohiro Otsuka
E-mail
tomohiro.otsukariec.tohoku.ac.jp
URL
http://en.tomootsuka.net/
Affiliation
Tohoku University
Section
Quantum Devices (Otsuka Group), Research Institute of Electrical Communication
Job title
Associate Professor
Degree
Doctor of Science(University of Tokyo)
Other affiliation
Department of Applied Physics, University of TokyoRIKEN (Center for Emergent Matter Science, Quantum Functional System Research Group)Department of Electrical Engineering, School of Engineering, Tohoku UniversityCenter for Spintronics Research Network, Tohoku University
Research funding number
50588019

Research Areas

 
 

Academic & Professional Experience

 
Apr 2018
 - 
Today
Associate Professor, Department of Electrical Engineering, School of Engineering, Tohoku University
 
Apr 2018
 - 
Today
Associate Professor, Center for Spintronics Research Network, Tohoku University
 
Feb 2018
 - 
Today
Visiting Researcher, RIKEN (Center for Emergent Matter Science, Quantum Functional System Research Group)
 
Feb 2018
 - 
Today
Associate Professor, Research Institute of Electrical Communication, Tohoku University (Quantum Devices (Otsuka Group), Information Devices Division)
 
Oct 2016
 - 
Today
Project Researcher, JST, PRESTO
 

Awards & Honors

 
Sep 2018
RIEC Research Exchange Meeting Good Presentation Award, RIEC, Tohoku University
 
Apr 2018
The Young Scientists’ Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Minister of Education, Culture, Sports, Science and Technology
 
Mar 2018
Yazaki Memorial Foundation for Science and Technology Research Encouraging Award, Yazaki Memorial Foundation
 
May 2017
Foundation Advanced Technology Institute Research Encouraging Award, Foundation Advanced Technology Institute
 
Apr 2017
RIKEN CEMS Award, CEMS, RIKEN
 

Published Papers

 
Takashi Nakajima, Akito Noiri, Jun Yoneda, Matthieu R. Delbecq, Peter Stano, Tomohiro Otsuka, Kenta Takeda, Shinichi Amaha, Giles Allison, Kento Kawasaki, Arne Ludwig, Andreas D. Wieck, Daniel Loss, Seigo Tarucha
Nature Nanotechnology   14 555-560   Jun 2019   [Refereed]
© 2019, The Author(s), under exclusive licence to Springer Nature Limited. Measurements of quantum systems inevitably involve disturbance in various forms. Within the limits imposed by quantum mechanics, there exists an ideal projective measuremen...
Marian Marx, Jun Yoneda, Tomohiro Otsuka, Kenta Takeda, Yu Yamaoka, Takashi Nakajima, Sen Li, Akito Noiri, Tetsuo Kodera, Seigo Tarucha
Japanese Journal of Applied Physics   58 SBBI07-1--5   Apr 2019   [Refereed]
© 2019 The Japan Society of Applied Physics. Holes in silicon exhibit an enhanced spin-orbit interaction compared to electrons, which can be used for electrical spin manipulation, but causes spin decoherence. Here we investigate the level detuning...
Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Peter Stano, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Sen Li, Akito Noiri, Takumi Ito, Daniel Loss, Arne Ludwig, Andreas D. Wieck, Seigo Tarucha
Physical Review B   99 085402-1--5   Feb 2019   [Refereed]
© 2019 American Physical Society. We analyze time evolution of charge and spin states in a quantum dot coupled to an electric reservoir. Utilizing high-speed single-electron detection, we focus on dynamics induced by the first-order tunneling. We ...
第34回半導体物理学国際会議(ICPS2018)報告
Tomohiro Otsuka
固体物理   54 55-60   Jan 2019
A. Noiri, T. Nakajima, J. Yoneda, M. R. Delbecq, P. Stano, T. Otsuka, K. Takeda, S. Amaha, G. Allison, K. Kawasaki, Y. Kojima, A. Ludwig, A. D. Wieck, D. Loss, S. Tarucha
Nature Communications   9 5066-1--7   Nov 2018   [Refereed]
© 2018, The Author(s). Single-spin qubits in semiconductor quantum dots hold promise for universal quantum computation with demonstrations of a high single-qubit gate fidelity above 99.9% and two-qubit gates in conjunction with a long coherence ti...

Conference Activities & Talks

 
Speed up of quantum dot charge sensing utilizing Bayesian estimation
Tomohiro Otsuka, Shuya Nagayasu, Takashi Nakajima, Matthieu R. Delbecq, Jun Yoneda, Kenta Takeda, Akito Noiri, Sen Li, Takumi Ito, Seigo Tarucha
International Conference on the Physics of Semiconductors   30 Jul 2018   
Different charge and spin dynamics in a quantum dot-lead coupled system
Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Peter Stano, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Akito Noiri, Takumi Ito, Daniel Loss, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
International Symposium on Dynamics in Artificial Quantum Systems   15 Jan 2018   
Probing Dynamics of Local Electronic States in Nanostructures Utilizing Fast Quantum Dot Probes
Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Peter Stano, Akito Noiri, Takumi Ito, Daniel Loss, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
International Symposium on Fluctuation and Structure out of Equilibrium   21 Nov 2017   
Four Single-spin Rabi Oscillations in a Quadruple Quantum Dot
Takumi Ito*, Tomohiro Otsuka*, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Akito Noiri, Giles Allison, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
International Conference on Electronic Properties of Two Dimensional Systems   3 Aug 2017   
Difference in Charge and Spin Dynamics in a Quantum Dot-Lead Hybrid System
Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Peter Stano, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Akito Noiri, Takumi Ito, Daniel Loss, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
International Conference on Electronic Properties of Two Dimensional Systems   1 Aug 2017   

Association Memberships

 
 

Education

 
Apr 2007
 - 
Mar 2010
Ph.D. course, Department of Physics, University of Tokyo (ISSP Katsumoto Lab)
 
Apr 2005
 - 
Mar 2007
Master course, Department of Physics, University of Tokyo (ISSP Katsumoto Lab)
 
Apr 2003
 - 
Mar 2005
Department of Physics, University of Tokyo