HIRANO Takuya

J-GLOBAL         Last updated: Nov 24, 2019 at 00:50
 
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Name
HIRANO Takuya
Affiliation
Gakushuin University
Section
Faculty of Science, Department of Physics
Degree
(BLANK)(The University of Tokyo)

Research Interests

 
 

Research Areas

 
 

Academic & Professional Experience

 
1992
 - 
1993
JSPS Postdoctoral fellow
 
1993
 - 
1998
University of Tokyo, Research Assoc.
 

Education

 
 
 - 
1992
Graduate School, Division of Science, The University of Tokyo
 
 
 - 
1988
Faculty of Science, The University of Tokyo
 

Published Papers

 
Shinjo A, Eto Y, Hirano T.
Optics Express   27(13) 17610-17619   2019   [Refereed]
Eriksson T.A, Hirano T, Puttnam B.J, Rademacher G, Lu{í}s R.S, Fujiwara M, Namiki R, Awaji Y, Takeoka M, Wada N, Sasaki M.
Communications Physics   2(1)    2019   [Refereed]
Eto Y, Shibayama H, Shibata K, Torii A, Nabeta K, Saito H, Hirano T.
Physical Review Letters   122(24)    2019   [Refereed]
Shibata K, Torii A, Shibayama H, Eto Y, Saito H, Hirano T.
Physical Review A   99(1)    2019   [Refereed]

Misc

 
Nabeta Keita, Okada Ryotaro, Torii Aki, Sadgrove Mark, Shibayama Hitoshi, Eto Yujiro, Hirano Takuya
Meeting Abstracts of the Physical Society of Japan   71(0) 511-511   2016
<p>我々は以前からスピン2ボース・アインシュタイン凝縮体のスピン制御技術を利用して、ラムゼイ干渉によりラーモア歳差運動の観測をしてきた。これまでは、初期状態が磁気副準位m_F_=2の状態で実験を行ってきたが、初期状態を適切に選ぶことで干渉計の感度を向上させることが予測されている。本発表ではm_F_=0を初期状態にした時のラジオ波によるスピンの回転とラムゼイ干渉について報告する。</p>
Eto Yujiro, Takahashi Masahiro, Kunimi Masaya, Saito Hiroki, Hirano Takuya
Meeting Abstracts of the Physical Society of Japan   71(0) 505-505   2016
<p>多成分流体の空間的な構造形成は、非平衡過程や非線型現象を理解する上で重要な効果である。我々は、2成分ボース・アインシュタイン凝縮体の混和性を制御することにより、不安定な空間構造を持つ混ざり合う性質の2成分凝縮体を生成し、パターン形成ダイナミクスを観測することに成功した。発表では、混和性制御の方法や実験結果の詳細について紹介する。</p>
Matsubara T., Ono M., Ichikawa T., Hirano T., Kasai K., Matsumoto R., Tsurumaru T.
Meeting Abstracts of the Physical Society of Japan   71(0)    2016
Okada R., Nabeta K., Torii A., Takahashi M., Eto Y., Kunimi M., Saito H., Hirano T.
Meeting Abstracts of the Physical Society of Japan   71(0)    2016
Eto Y., Takahashi M., Hirano T., Kunimi M., Saito H.
Meeting Abstracts of the Physical Society of Japan   71(0) 1680-1681   2016
Hirakawa K., Oguri Y., Kono K., Oya S., Nakano T., Ichikawa T., Hirano T., Tsurumaru T.
日本物理学会講演概要集   70(2)    Sep 2015
Shinjo A., Kikuchi S., Eto Y., Hirano T.
日本物理学会講演概要集   70(2)    Sep 2015
Eto Y., Takahashi M., Okada R., Nabeta K., Kunimi M., Saito H., Hirano T.
日本物理学会講演概要集   70(2)    Sep 2015
Eto Yujiro, Saito Hiroki, Hirano Takuya
日本物理學會誌   70(8) 614-619   Aug 2015
We observed the spin texture formation and the spatial modulation of the longitudinal magnetization in a spin-2 ^<87>Rb Bose-Einstein condensate. The observed results are compared with numerical simulations of the Gross-Pitaevskii equation, which ...
Tokita H., Kunimi M., Okada R., Nabeta K., Eto Y., Saito H., Hirano T.
日本物理学会講演概要集   70(1)    Mar 2015

Books etc

 
Cold Atom Magnetometers, in Principles and Methods of Quantum Information Technologies
Yujiro Eto, Mark Sadrove, Takuya Hirano (Part:Joint Work)
Springer Japan   2016   

Works

 
Manipulation of Quantum Fields
1995 - 2000
Laser cooling, physics and its applications
1999

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2008 - 2010    Investigator(s): Takuya HIRANO
We have studied methods for creating continuous variable entanglement of pulsed light, and demonstrated quantum correlations beyond the classical limit. We have proposed and demonstrated a scheme to stably generate quadrature-entangled optical pul...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2004 - 2005    Investigator(s): Takuya HIRANO
Recently there have been growing interests in continuous-variable (CV) quantum information processing. Experimental demonstration of CV quantum teleportation, quantum dense coding, quantum telecloning, and quantum key distribution, (QKD) have been...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2000 - 2001    Investigator(s): Takuya HIRANO
We have achieved the following results.(1) We obtained more than 40% conversion efficiency for the second harmonic generation of a mode-locked YVO_4 laser using a quasi-phase-matched periodically-polled KTiO_4 (PPKTP) crystal.(2) We observed 10% p...
Quantum Cryptography
Laser cooling of neutral atoms