JA

Profile

Research

Social

Other

Fujita Takafumi

藤田　高史

The Institute of Scientific and Industrial Research, Associate Professor

Research History

  • 2022/10 - Present, Osaka University The Institute of Scientific and Industrial Research, Associate Professor
  • 2017/08 - 2022/09, Osaka University The Institute of Scientific and Industrial Research, Assistant Professor

Papers

  • Electron g-factor determined for quantum dot circuit fabricated from (110)-oriented GaAs quantum well, T. Nakagawa,S. Lamoureux,T. Fujita,J. Ritzmann,A. Ludwig,A. D. Wieck,A. Oiwa,M. Korkusinski,A. Sachrajda,D. G. Austing,L. Gaudreau, Journal of Applied Physics, AIP Publishing, Vol. 131, No. 13, p. 134305-134305, 2022/04/07
  • Detection of photogenerated single electrons in a lateral quantum dot with a surface plasmon antenna, Rio Fukai,Yuji Sakai,Takafumi Fujita,Haruki Kiyama,Arne Ludwig,Andreas D. Wieck,Akira Oiwa, Applied Physics Express, IOP Publishing, Vol. 14, No. 12, p. 125001-125001, 2021/12/01
  • Noise-robust classification of single-shot electron spin readouts using a deep neural network, Yuta Matsumoto,Takafumi Fujita,Arne Ludwig,Andreas D. Wieck,Kazunori Komatani,Akira Oiwa, npj Quantum Information, Springer Science and Business Media LLC, Vol. 7, No. 1, 2021/12
  • Distinguishing persistent effects in an undoped GaAs/AlGaAs quantum well by top-gate-dependent illumination, Takafumi Fujita,Ryota Hayashi,Makoto Kohda,Julian Ritzmann,Arne Ludwig,Junsaku Nitta,Andreas D. Wieck,Akira Oiwa, Journal of Applied Physics, AIP Publishing, Vol. 129, No. 23, p. 234301-234301, 2021/06/21
  • Characterization of a surface plasmon antenna fabricated on a gate-defined lateral quantum dot, Rio Fukai,Yuji Sakai,Tomohiro Nakagawa,Takafumi Fujita,Haruki Kiyama,Arne Ludwig,Andreas D. Wieck,Akira Oiwa, Japanese Journal of Applied Physics, IOP Publishing, Vol. 60, No. SB, p. SBBI01-SBBI01, 2021/05/01
  • Loading a quantum-dot based “Qubyte” register, C. Volk,A. M. J. Zwerver,U. Mukhopadhyay,P. T. Eendebak,C. J. van Diepen,J. P. Dehollain,T. Hensgens,T. Fujita,C. Reichl,W. Wegscheider,L. M. K. Vandersypen, npj Quantum Information, Springer Science and Business Media LLC, Vol. 5, No. 1, 2019/12
  • Angular momentum transfer from photon polarization to an electron spin in a gate-defined quantum dot, Takafumi Fujita,Kazuhiro Morimoto,Haruki Kiyama,Giles Allison,Marcus Larsson,Arne Ludwig,Sascha R. Valentin,Andreas D. Wieck,Akira Oiwa,Seigo Tarucha, Nature Communications, Springer Science and Business Media LLC, Vol. 10, No. 1, 2019/12
  • Photogeneration of a single electron from a single Zeeman-resolved light-hole exciton with preserved angular momentum, K. Kuroyama,M. Larsson,C. Y. Chang,J. Muramoto,K. Heya,T. Fujita,G. Allison,S. R. Valentin,A. Ludwig,A. D. Wieck,S. Matsuo,A. Oiwa,S. Tarucha, Physical Review B, American Physical Society (APS), Vol. 99, No. 8, 2019/02
  • Photogeneration of a single electron from a single Zeeman-resolved light-hole exciton with preserved angular momentum, K. Kuroyama,M. Larsson,C. Y. Chang,J. Muramoto,K. Heya,T. Fujita,G. Allison,S. R. Valentin,A. Ludwig,A. D. Wieck,S. Matsuo,A. Oiwa,S. Tarucha, Physical Review B, American Physical Society (APS), Vol. 99, No. 8, 2019/02
  • Transport through quantum dots formed in a (110) GaAs quantum well, T. Nakagawa,R. Fukai,Y. Sakai,Y. Sakai,T. Fujita,H. Kiyama,T. Nakajima,J. Ritzmann,A. Ludwig,A. D. Wieck, 2018/09
  • Automated tuning of inter-dot tunnel coupling in double quantum dots, C. J,van Diepen,P. T. Eendebak,B. T. Buijtendorp,U. Mukhopadhyay,T. Fujita,C. Reichl,L. M,K. Vandersypen, Applied Physics Letters, 2018/07
  • Automated tuning of inter-dot tunnel coupling in double quantum dots, C. J,van Diepen,P. T. Eendebak,B. T. Buijtendorp,U. Mukhopadhyay,T. Fujita,C. Reichl,L. M,K. Vandersypen, Applied Physics Letters, 2018/07
  • Nonlinear and dot-dependent Zeeman splitting in GaAs/AlGaAs quantum dot arrays, V. P. Michal,T. Fujita,T. A. Baart,J. Danon,C. Reichl,W. Wegscheider,L. M,K. Vandersypen,Y. V. Nazarov, Physical Review B, 2018/01
  • Single electron-photon pair creation from a single polarization-entangled photon pair, Kazuyuki Kuroyama,Marcus Larsson,Sadashige Matsuo,Takafumi Fujita,Sascha R. Valentin,Arne Ludwig,Andreas D. Wieck,Akira Oiwa,Seigo Tarucha, Scientific Reports, Nature Publishing Group, Vol. 7, No. 1, 2017/12/01
  • Single electron-photon pair creation from a single polarization-entangled photon pair, Kazuyuki Kuroyama,Marcus Larsson,Sadashige Matsuo,Takafumi Fujita,Sascha R. Valentin,Arne Ludwig,Andreas D. Wieck,Akira Oiwa,Seigo Tarucha, Scientific Reports, Nature Publishing Group, Vol. 7, No. 1, 2017/12/01
  • Quantum simulation of a Fermi–Hubbard model using a semiconductor quantum dot array, T. Hensgens,T. Fujita,L. Janssen,Xiao Li,C. J. Van Diepen,C. Reichl,W. Wegscheider,S. Das Sarma,L. M. K. Vandersypen, Nature, 2017/08
  • Coherent spin shuttling through quantum dots, T. Fujita,T.A. Baart,C. Reichl,W. Wegscheider,L.M.K. Vandersypen, 2017/06
  • Coherent shuttle of electron-spin states, T. Fujita,T. A. Baart,C. Reichl,W. Wegscheider,L. M,K. Vandersypen, Nature Partner Journal Quantum Information, 2017/06
  • Coherent shuttle of electron-spin states, Fujita Takafumi,Baart Timothy Alexander,Reichl Christian,Wegscheider Werner,Vandersypen Lieven,Mark Koenraad, NPJ QUANTUM INFORMATION, Vol. 3, No. 22, 2017/06
  • Coherent transfer of spins in a quantum dot array, T. Fujita,T.A. Baart,C. Reichl,W. Wegscheider,L.M.K. Vandersypen, 2017/04
  • A single eletron-photon pair generation from a single polarization-entangled photon pair, Kazuyuki Kuroyama,Marcus Larsson,Sadashige Matsuo,Takafumi Fujita,Sascha R. Valentin,Arne Ludwig,Andreas D. Wieck,Akira Oiwa,Seigo Tarucha, 2017/03
  • Conversion from single photon to single electron spin using electrically controllable quantum dots, Akira Oiwa,Takafumi Fujita,Haruki Kiyama,Giles Allison,Arne Ludwig,Andreas D. Wieck,Seigo Tarucha, Journal of the Physical Society of Japan, Physical Society of Japan, Vol. 86, No. 1, 2017/01/15
  • Coherent shuttle of electron-spin states, T. Fujita,T. A. Baart,C. Reichl,W. Wegscheider,L. M,K. Vandersypen, 2017/01
  • Coherent spin-exchange via a quantum mediator, Baart Timothy Alexander,Fujita Takafumi,Reichl Christian,Wegscheider Werner,Vandersypen Lieven,Mark Koenraad, NATURE NANOTECHNOLOGY, Vol. 12, No. 1, p. 26-30, 2017/01
  • Signatures of hyperfine, spin-orbit, and decoherence effects in a Pauli spin blockade, T. Fujita,P. Stano,G. Allison,K. Morimoto,Y. Sato,M. Larsson,J. H. Park,A. Ludwig,A. D. Wieck,A. Oiwa,S. Tarucha, Physical Review Letters, American Physical Society, Vol. 117, No. 20, 2016/11/11
  • Demonstration of quantum state transfer using optical Pauli spin blockade in a lateral GaAs quantum dot, Larsson Marcus,Kuroyama Kazuyui,Matsuo Sadashige,Fujita Takafumi,Valentin Sascha R.,Ludwig Arne,D.Wieck Andreas D.,Oiwa Akira,Tarucha Seigo, Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, Vol. 71, p. 1157-1157, 2016
  • Single-Spin CCD, Timothy Alexander Baart,Mohammad Shafiei,Takafumi Fujita,Christian Reichl,Werner Wegscheider,Lieven Mark Koenraad Vandersypen, Nature Nanotechnology 11, 330-334 (2016), 2015/07
  • Single photoelectron spin detection and angular momentum transfer in a gate defined quantum dot, Takafumi Fujita,Kazuhiro Morimoto,Haruki Kiyama,Giles Allison,Marcus Larsson,Arne Ludwig,Sascha R. Valentin,Andreas D. Wieck,Akira Oiwa,Seigo Tarucha, 2015/04
  • 16aAE-3 Simultaneous detection of a photon and an electron towards quantum entanglement generation between a photon polarization and an electron spin, Kuroyama K.,Larsson M.,Fujita T.,Matsuo S.,Valentin S.,Ludwig A.,Wieck A.,Oiwa A.,Tarucha S., Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 70, p. 1004-1004, 2015
  • 23pBK-12 GaAs系横型量子ドットにおける単一光子検出の高効率化, 黒山 和幸,藤田 高史,Larsson Marcus,松尾 貞茂,Valentin Sascha R.,Ludwig Arne,Wieck Andreas,大岩 顕,樽茶 清悟, 日本物理学会講演概要集, 一般社団法人日本物理学会, Vol. 70, p. 1379-1379, 2015
  • Tuning the electrically evaluated electron Landé<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>g</mml:mi></mml:math>factor in GaAs quantum dots and quantum wells of different well widths, G. Allison,T. Fujita,K. Morimoto,S. Teraoka,M. Larsson,H. Kiyama,A. Oiwa,S. Haffouz,D. G. Austing,A. Ludwig,A. D. Wieck,S. Tarucha, Physical Review B, American Physical Society (APS), Vol. 90, No. 23, 2014/12/11
  • Single photoelectron detection after selective excitation of electron heavy-hole and electron light-hole pairs in double quantum dots, K. Morimoto,T. Fujita,G. Allison,S. Teraoka,M. Larsson,H. Kiyama,S. Haffouz,D. G. Austing,A. Ludwig,A. D. Wieck,A. Oiwa,S. Tarucha, Physical Review B, American Physical Society (APS), Vol. 90, No. 8, 2014/08/12
  • Electrically tunable spin filtering for electron tunneling between spin-resolved quantum Hall edge states and a quantum dot, H. Kiyama,T. Fujita,S. Teraoka,A. Oiwa,S. Tarucha, Applied Physics Letters, AIP Publishing, Vol. 104, No. 26, p. 263101-263101, 2014/06/30
  • Nondestructive Real-Time Measurement of Charge and Spin Dynamics of Photoelectrons in a Double Quantum Dot, T. Fujita,H. Kiyama,K. Morimoto,S. Teraoka,G. Allison,A. Ludwig,A. D. Wieck,A. Oiwa,S. Tarucha, Physical Review Letters, American Physical Society (APS), Vol. 110, No. 26, 2013/06/25
  • Single-Shot Detection of Electrons Generated by Individual Photons in a Tunable Lateral Quantum Dot, A. Pioda,E. Totoki,H. Kiyama,T. Fujita,G. Allison,T. Asayama,A. Oiwa,S. Tarucha, Physical Review Letters, American Physical Society (APS), Vol. 106, No. 14, 2011/04/08
  • Angular momentum transfer between a circularly polarized photon and an electron spin in double quantum dots, T. Asayama,T. Fujita,H. Kiyama,A. Oiwa,S. Tarucha, PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, AMER INST PHYSICS, Vol. 1399, 2011
  • Development of a Numerical Algorithm for Identifying Single Photon Detection with a Quantum Dot, T. Fujita,T. Asayama,H. Kiyama,A. Oiwa,S. Tarucha, PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, AMER INST PHYSICS, Vol. 1399, 2011

Misc.

  • Optoelectronic spin transfer from single photons to single electron spins, Vol. 50, No. 11, p. 685-696, 2015/11
  • 8pAV-2 Real-time observation of spin blockade and analysis of the spin-flip tunneling time, Fujita T.,Morimoto K.,Sato Y.,Teraoka S.,Larsson Marcus,Alison Giles,Stano Peter,Ludwig Arne,Wieck Andreas D.,Oiwa A.,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 69, No. 2, p. 478-478, 2014/08/22
  • 27aAU-7 Angular momentum transfer from a single photon polarization to a single electron spin in a lateral double quantum dot, Fujita T.,Kiyama H.,Morimoto K.,Allison G.,Teraoka S.,Ludwig A.,Wieck A.,Oiwa A.,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 69, No. 1, p. 688-688, 2014/03/05
  • 28pXQ-9 Electrical control of the spin-dependent transport between a quantum dot and quantum Hall edge states by potential gradient tuning, Kiyama H.,Fujita T.,Teraoka S.,Oiwa A.,Tarucha s., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 68, No. 1, p. 775-775, 2013/03/26
  • 26aXQ-7 Single Photon Response in Lateral Quantum Dots Fabricated on a g-factor Engineered GaAs Quantum Well, Fujita T.,Morimoto K.,Teraoka S.,Allison Giles,Ludwig Arne,Wieck Andreas,Oiwa A.,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 68, No. 1, p. 743-743, 2013/03/26
  • GaAs系横型二重量子ドットにおける単一光子円偏光から単一電子スピンへの角運動量転写の実証, 藤田 高史,大岩 顕,樽茶 清悟, Annual report = 低温センター年次報告, 東京大学低温センター, No. 5, p. 23-28,表紙, 2013
  • 24aBJ-10 Transport through single and double quantum dots based on g-factor engineered GaAs/AlGaAs quantum wells, Morimoto K.,Fujita T.,Teraoka S.,Allison Giles,Kiyama H.,Oiwa A.,Haffouz Sofiane,Austing David Guy,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 67, No. 1, p. 719-719, 2012/03/05
  • 24aTR-3 Detection of Inter-dot Tunneling of a Single Photo-generated Electron in a Double Quantum Dot, Fujita T.,Kiyama H.,Teraoka S.,Allison Giles,Oiwa A.,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 66, No. 2, p. 704-704, 2011/08/24
  • 27pVE-14 Single photon detection using a GaAs-based quantum dot with a quantum point contact in the presence of magnetic field, Oiwa A.,Pioda A.,Asayama T.,Kiyama H.,Fujita T.,Allison Giles,Tarucha S., Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Vol. 64, No. 1, p. 688-688, 2009/03/03