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Fujisawa, Toshimasa

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Research Profile

Latest Publications

1.
2011

Fujisawa T.; Nishio K.; Nagase T.; Hashisaka M.; Muraki K.

Time Resolved Potential Measurement At Quantum Point Contacts Under Irradiation Of Surface Acoustic Burst Wave
AIP Conf. Proc. 1399, 269 (2011)
Research Center for Low‐Temperature Physics, Tokyo Institute of Technology, 2‐12‐1 Ookayama, Meguro, Tokyo, 152,8551, Japan
2.
2011

Jespersen T. S.; Grove-Rasmussen K.; Flensberg K.; Paaske J.; Muraki K.; Fujisawa T.; Nygård J.

Gate-Dependent Orbital Magnetic Moments in Carbon Nanotubes
Phys. Rev. Lett. 107, 186802 (2011)
Niels Bohr Institute & Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
3.
2011

Kumada N.; Kamata H.; Fujisawa T.

Edge magnetoplasmon transport in gated and ungated quantum Hall systems
Phys. Rev. B 84, 045314 (2011)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan

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All Publications

1.
2011

Fujisawa T.; Nishio K.; Nagase T.; Hashisaka M.; Muraki K.

Time Resolved Potential Measurement At Quantum Point Contacts Under Irradiation Of Surface Acoustic Burst Wave
AIP Conf. Proc. 1399, 269 (2011)
Research Center for Low‐Temperature Physics, Tokyo Institute of Technology, 2‐12‐1 Ookayama, Meguro, Tokyo, 152,8551, Japan
2.
2011

Jespersen T. S.; Grove-Rasmussen K.; Flensberg K.; Paaske J.; Muraki K.; Fujisawa T.; Nygård J.

Gate-Dependent Orbital Magnetic Moments in Carbon Nanotubes
Phys. Rev. Lett. 107, 186802 (2011)
Niels Bohr Institute & Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
3.
2011

Kumada N.; Kamata H.; Fujisawa T.

Edge magnetoplasmon transport in gated and ungated quantum Hall systems
Phys. Rev. B 84, 045314 (2011)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
4.
2011

Takashina K.; Niida Y.; Renard V. T.; Fujiwara A.; Fujisawa T.; Muraki K.; Hirayama Y.

Impact of Valley Polarization on the Resistivity in Two Dimensions
Phys. Rev. Lett. 106, 196403 (2011)
NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan
5.
2011

Washio Kazuhisa; Hashisaka Masayuki; Kamata Hiroshi; Muraki Koji; Fujisawa Toshimasa

Admittance Measurement for a Quantum Point Contact in a Multiterminal Quantum Hall Device
Jpn. J. Appl. Phys., Part 1 50, 04DJ04 (2011)
Research Center for Low Temperature Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan
6.
2010

Utsumi Y.; Golubev D. S.; Marthaler M.; Saito K.; Fujisawa T.; Schön Gerd

Bidirectional single-electron counting and the fluctuation theorem
Phys. Rev. B 81, 125331 (2010)
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
7.
2010

Kamata H.; Ota T.; Muraki K.; Fujisawa T.

Voltage-controlled group velocity of edge magnetoplasmon in the quantum Hall regime
Phys. Rev. B 81, 085329 (2010)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
8.
2010

Giudici P.; Muraki K.; Kumada N.; Fujisawa T.

Intrinsic Gap and Exciton Condensation in the νT=1 Bilayer System
Phys. Rev. Lett. 104, 056802 (2010)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan
9.
2010

Kobayashi T.; Tsuruta S.; Sasaki S.; Fujisawa T.; Tokura Y.; Akazaki T.

Kondo Effect in a Semiconductor Quantum Dot with a Spin-Accumulated Lead
Phys. Rev. Lett. 104, 036804 (2010)
NTT Basic Research Laboratories, Atsugi-shi, Kanagawa 243-0198, Japan
10.
2010

Ota Takeshi; Hayashi Toshiaki; Muraki Koji; Fujisawa Toshimasa

Wide-band capacitance measurement on a semiconductor double quantum dot for studying tunneling dynamics
Appl. Phys. Lett. 96, 032104 (2010)
NTT Basic Research Laboratories, NTT Corporation, 3-1, Morinosato-Wakamiya, Atsugi 243-0198, Japan
11.
2009

Shinkai Gou; Hayashi Toshiaki; Ota Takeshi; Muraki Koji; Fujisawa Toshimasa

Bidirectional Current Drag Induced by Two-Electron Cotunneling in Coupled Double Quantum Dots
Appl. Phys. Express 2, 081101 (2009)
NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
12.
2009

Takashina K.; Nishiguchi K.; Ono Y.; Fujiwara A.; Fujisawa T.; Hirayama Y.; Muraki K.

Electrons and holes in a 40 nm thick silicon slab at cryogenic temperatures
Appl. Phys. Lett. 94, 142104 (2009)
NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan
13.
2009

Niida Y.; Takashina K.; Fujiwara A.; Fujisawa T.; Hirayama Y.

Spin splitting of upper electron subbands in a SiO2/Si(100)/SiO2 quantum well with in-plane magnetic field
Appl. Phys. Lett. 94, 142101 (2009)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
14.
2008

Kumada N.; Hirayama Y.; Miyashita S.; Kamada T.; Fujisawa T.

Electric Field Induced Nuclear Spin Resonance Mediated by Oscillating Electron Spin Domains in GaAs-Based Semiconductors
Phys. Rev. Lett. 101, 137602 (2008)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan
15.
2008

Liu Hongwu; Fujisawa Toshimasa; Inokawa Hiroshi; Ono Yukinori; Fujiwara Akira; Hirayama Yoshiro

A gate-defined silicon quantum dot molecule
Appl. Phys. Lett. 92, 222104 (2008)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan; SORST-JST, Chiyoda, Tokyo 102-0075, Japan; National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, People’s Republic of China;
16.
2008

Melnikov D. V.; Tarucha S.; Austing D. G.; Fujisawa T.; Leburton J.-P.

Many-body excitations in the tunneling current spectra of a few-electron quantum dot
Phys. Rev. B 77, 165340 (2008)
Beckman Institute for Advanced Science and Technology and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801, USA
17.
2008

Giudici P.; Hirayama Y.; Kumada N.; Muraki K.; Fujisawa T.

Spin-Dependent Phase Diagram of the ν;T=1 Bilayer Electron System
Phys. Rev. Lett. 100, 106803 (2008)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan
18.
2008

Liu H. W.; Fujisawa T.; Ono Y.; Inokawa H.; Fujiwara A.; Takashina K.; Hirayama Y.

Pauli-spin-blockade transport through a silicon double quantum dot
Phys. Rev. B 77, 073310 (2008)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
19.
2008

Perraud Simon; Wang Zhao-Zhong; Kanisawa Kiyoshi; Fujisawa Toshimasa

Direct Measurement of the Binding Energy and Bohr Radius of a Single Hydrogenic Defect in a Semiconductor Quantum Well
Phys. Rev. Lett. 100, 056806 (2008)
NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
20.
2007

Perraud Simon; Kanisawa Kiyoshi; Wang Zhao-Zhong; Fujisawa Toshimasa

Imaging the percolation of localized states in a multisubband two-dimensional electronic system subject to a disorder potential
Phys. Rev. B 76, 195333 (2007)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
21.
2007

Ota T.; Yusa G.; Kumada N.; Miyashita S.; Fujisawa T.; Hirayama Y.

Decoherence of nuclear spins due to dipole-dipole interactions probed by resistively detected nuclear magnetic resonance
Appl. Phys. Lett. 91, 193101 (2007)
NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan and SORST-JST, Kawaguchi, Saitama 331-0012, Japan
22.
2007

Fujisawa Toshimasa; Shinkai Gou; Hayashi Toshiaki

Zeeman splitting in single-electron transport through a few-electron quantum dot
Phys. Rev. B 76, 041302 (2007)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
23.
2007

Naber W. J. M.; Fujisawa T.; Liu H. W.; van der Wiel W. G.

Interaction of a 2‐level system with 2D phonons
AIP Conf. Proc. 893, 755 (2007)
SRO NanoElectronics, MESA+; Institute for NanoTechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
24.
2007

Fujisawa T.; Hayashi T.; Hirayama Y.

Higher‐order moment of single‐electron current noise in a double quantum dot
AIP Conf. Proc. 893, 753 (2007)
NTT Basic Research Laboratories, NTT Corporation, 3‐1 Morinosato‐Wakamiya, Atsugi, 243‐0198, Japan;
25.
2007

Suzuki K.; Kanisawa K.; Janer C.; Perraud S.; Takashina K.; Fujisawa T.; Hirayama Y.

Spatial Imaging of Two-Dimensional Electronic States in Semiconductor Quantum Wells
Phys. Rev. Lett. 98, 136802 (2007)
NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan
26.
2007

Shinkai Gou; Hayashi Toshiaki; Hirayama Yoshiro; Fujisawa Toshimasa

Controlled resonant tunneling in a coupled double-quantum-dot system
Appl. Phys. Lett. 90, 103116 (2007)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan
27.
2006

Naber W. J. M.; Fujisawa T.; Liu H. W.; van der Wiel W. G.

Surface-Acoustic-Wave-Induced Transport in a Double Quantum Dot
Phys. Rev. Lett. 96, 136807 (2006)
SRO NanoElectronics, MESA+ Institute for NanoTechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
28.
2005

Liu H. W.; Hayashi T.; Fujisawa T.; Hirayama Y.

Pauli spin blockade in cotunneling transport through a double quantum dot
Phys. Rev. B 72, 161305 (2005)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
29.
2005

Sasaki S.; Fujisawa T.; Hayashi T.; Hirayama Y.

Electrical Pump-and-Probe Study of Spin Singlet-Triplet Relaxation in a Quantum Dot
Phys. Rev. Lett. 95, 056803 (2005)
NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan
30.
2004

Jung S. W.; Fujisawa T.; Hirayama Y.; Jeong Y. H.

Background charge fluctuation in a GaAs quantum dot device
Appl. Phys. Lett. 85, 768 (2004)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
31.
2004

Fujisawa Toshimasa; Hayashi Toshiaki; Hirayama Yoshiro

Controlled decoherence of a charge qubit in a double quantum dot
J. Vac. Sci. Technol. B 22, 2035 (2004)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan;
32.
2004

Fujisawa T.; Hayashi T.; Hirayama Y.; Cheong H. D.; Jeong Y. H.

Electron counting of single-electron tunneling current
Appl. Phys. Lett. 84, 2343 (2004)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
33.
2003

Hayashi T.; Fujisawa T.; Cheong H. D.; Jeong Y. H.; Hirayama Y.

Coherent Manipulation of Electronic States in a Double Quantum Dot
Phys. Rev. Lett. 91, 226804 (2003)
34.
2003

Fujisawa Toshimasa; Austing David Guy; Hirayama Yoshiro; Tarucha Seigo

Electrical Pump and Probe Measurements of a Quantum Dot in the Coulomb Blockade Regime
Jpn. J. Appl. Phys., Part 1 42, 4804 (2003)
NTT Basic Research Laboratories, NTT Corporation, 3‐1 Morinosato‐Wakamiya, Atsugi 243‐0198, Japan;
35.
2003

van der Wiel W. G.; Nazarov Yu. V.; De Franceschi S.; Fujisawa T.; Elzerman J. M.; Huizeling E. W. G. M.; Tarucha S.; Kouwenhoven L. P.

Electromagnetic Aharonov-Bohm effect in a two-dimensional electron gas ring
Phys. Rev. B 67, 033307 (2003)
PRESTO, Japan Science and Technology Corporation (JST), Department of Physics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
36.
2003

van der Wiel W. G.; De Franceschi S.; Elzerman J. M.; Fujisawa T.; Tarucha S.; Kouwenhoven L. P.

Electron transport through double quantum dots
Rev. Mod. Phys. 75, 1 (2003)
Department of Physics and PRESTO, Japan Science and Technology Corporation (JST), Tokyo University, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;
37.
2002

Cheong H. D.; Fujisawa T.; Hayashi T.; Hirayama Y.; Jeong Y. H.

Impedance analysis of a radio-frequency single-electron transistor
Appl. Phys. Lett. 81, 3257 (2002)
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan;
38.
2002

De Franceschi S.; Hanson R.; van der Wiel W. G.; Elzerman J. M.; Wijpkema J. J.; Fujisawa T.; Tarucha S.; Kouwenhoven L. P.

Out-of-Equilibrium Kondo Effect in a Mesoscopic Device
Phys. Rev. Lett. 89, 156801 (2002)
39.
2002

Fujisawa T.; Austing D. G.; Tokura Y.; Hirayama Y.; Tarucha S.

Nonequilibrium Transport through a Vertical Quantum Dot in the Absence of Spin-Flip Energy Relaxation
Phys. Rev. Lett. 88, 236802 (2002)
40.
2001

Wiel Wilfred G. van der; Fujisawa Toshimasa; Tarucha Seigo; Kouwenhoven Leo P.

A Double Quantum Dot as an Artificial Two-Level System
Jpn. J. Appl. Phys., Part 1 40, 2100 (2001)
Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands
41.
2001

Fujisawa Toshimasa; Tokura Yasuhiro; Hirayama Yoshiro

Transient current spectroscopy of a quantum dot in the Coulomb blockade regime
Phys. Rev. B 63, 081304 (2001)
NTT Basic Research Laboratories, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198, Japan
42.
1997

Fujisawa Toshimasa; Tarucha Seigo

Multiple Photon Assisted Tunneling between Two Coupled Quantum Dots
Jpn. J. Appl. Phys., Part 1 36, 4000 (1997)
NTT Basic Research Laboratories, 3-1, Morinosato-Wakamiya, Atsugi, Kanagawa 243-01, Japan
43.
1994

Fujisawa Toshimasa; Bever Thomas; Hirayama Yoshiro; Tarucha Seigo

Nanostructure fabrication and the science using focused ion beams
J. Vac. Sci. Technol. B 12, 3755 (1994)
NTT Basic Research Laboratories, 3‐1, Morinosato Wakamiya, Atsugi‐shi, Kanagawa 243‐01, Japan;
44.
1994

Fujisawa Toshimasa; Hirayama Yoshiro; Tarucha Seigo

AlGaAs/InGaAs/GaAs single electron transistors fabricated by Ga focused ion beam implantation
Appl. Phys. Lett. 64, 2250 (1994)
NTT Basic Research Laboratories, 3‐1, Morinosato‐Wakamiya, Atsugi, 243‐01, Japan;
45.
1993

Fujisawa Toshimasa; Saku Tadashi; Hirayama Yoshiro; Tarucha Seigo

Sub‐μm wide channels with surface potential compensated by focused Si ion beam implantation
Appl. Phys. Lett. 63, 51 (1993)
NTT Basic Research Laboratories, Midori‐cho, Musashino‐shi, Tokyo 180, Japan;

Co-authors

Co-publications
21

Hirayama, Yoshiro
11

Tarucha, Seigo
10

Muraki, Koji
8

Hayashi, Toshiaki
5

Fujiwara, Akira
5

van der Wiel, Wilfred G.
5

Kumada, Norio
5

Takashina, Kei
4

Kouwenhoven, Leo P.
4

Liu, HW
4

Jeong, Yoon Hee
3

Kanisawa, Kiyoshi
3

Austing, D. Guy
3

Cheong, HD
3

De Franceschi, Silvano