CURRICULUM VITAE

December 3, 2010

NAME

Akihisa TOMITA

BIRTHPlace: Tokyo, Japan
Graduate School of Information Science andTechnology, Hokkaido University,Kita 14, Nishi 9, Sapporo, 060-0814, JapanADDRESS

Phone/Fax
e-mailMALE

NationalityJapan

Date: October 18, 1959

+81-11-7066521
tomita@ist.hokudai.ac.jp

EDUCATION
year

month

1978
1982
1982
1984

April- Department of Physics, Faculty of Science, University of Tokyo
March
April- Department of Physics, Graduate School of Science, University ofMarch Tokyo

DEGREE
year

month

1982
1984
1998

March B. Sc. in Physics, University of Tokyo
March M. Sc. in Physics, University of TokyoSep.
D. Phil. in Electronics, University of Tokyo
EMPLOYMENT

yearmonth2010

April-2009
2010
2005
2010
2005
2003
2008
2000
2005
1998
2005
1991
1992
1987
1989
1984
1998

Professor, Graduate School of Information Science and Technology,
Hokkaido University
April- Visiting Professor, Graduate School of Pure and Applied Sciences,
MarchTsukuba University
Nov.Senior Principal Researcher, Fundamental and Environmental Research
MarchLaboratories, NEC Corp.
Oct.Quantum Information Experiment Group Leader, Quantum Computation
and Information Project, ERATO-SORST, JST
Oct.Visiting Associate Professor, Graduate School of Interdisciplinary Science
Marchand Engineering, Tokyo Institute of Technology
Oct.Quantum Information Group Leader, Quantum Computation andSep.
Information Project, ERATO, JST
JulyPrincipal Researcher, Fundamental and Environmental ResearchOct.
Laboratories, NEC Corp.
Sep.Visiting Researcher, AT&T Bell Laboratories
Aug.
Jan.Researcher, Opto-electronics Technology Research Laboratories
MarchApril- Researcher, Opto-electronics Research Laboratories, NEC Corp.
June

RESEARCH ACTIVITES(5-selected)
Author(s), Title（peer-reviewed articles）
Mikio Fujiwara, Morio Toyoshima,
Masahide Sasaki, Ken-ichiro Yoshino,
Yoshihiro Nambu, and Akihisa Tomita,“Performance of hybrid entanglement
photon pair source for quantum keydistribution,”

JournalSummary
We have demonstrated a source ofAppl. Phys. Lett. 95, 261103

hybrid entanglement pairs between(2009)

two different degrees of freedom, a1550 nm time-bin qubit and an 810
nm polarization qubit. We obtained
visibilities of 95.8% and 88%, well
above the threshold of 70.7% needed
to violate a Bell inequality and allow
distilling a secure key in the quantum
key distribution.

A. Tanaka, M. Fujiwara, S. W. Nam, Y.
Nambu, S. Takahashi, W. Maeda, K.

Optics Express 16 (15), pp.
11354-11360 (2008).

We have developed a high-speed
QKD system operated on 625-MHz

Yoshino, S. Miki, B. Baek, Z. Wang, A.

clock, and succeeded in key

Tajima, M. Sasaki, and A. Tomita:

generation after transmission through“Ultra fast quantum key distribution

a 97-km installed fiber cable.

over a 97 km installed telecom fibersynchronization pulses werewith wavelength division multiplexing

transmitted through the same

clock synchronization,”

fiber-core with the quantum signals

The

without degradation on the QBER.

Phys. Rev. A 77, 032343(2008).
Tani, and A. Tomita, “Experimentaldemonstration of quantum leader
election in linear optics,”
Y. Okubo, X.-B. Wang, Y.-K. Jiang, S.

Anonymous leader election is one of
the fundamental problems in
distributed computing. We have
implemented a quantum algorithm
solving this problem
deterministically with a linear opticalcircuit. It is interesting that in this
implementation even failure resultsin linear-optic quantum gates can beutilized to determine a leader.

M. Shirane, S. Kono, J. Ushida, S.

J. Appl. Phys. 101,

We designed a high-Q cavity with a

Ohkouchi, N. Ikeda, Y. Sugimoto, and073107 (2007).

photonic crystal defect of highly

A. Tomita, “Mode identification ofsymmetric H1 mode. This cavity is

high-quality-factor single-defectpolarization independent andnanocavities in quantum dot-embedded

compatible to polarization encoded

photonic crystals,”

qubits. We characterized the cavity
modes and verified the polarization
independence.

A. Tomita, “Quantum Information

Optika i Spektroskopiya 99,

We have demonstrated a fiber-optic

Processing with Fiber Optics: Quantum

No. 2 pp. 219–225 (2005)quantum circuit that performs

Fourier Transform of 1024 Qubits,”

Quantum Fourier Transform
followed by measurement up to 1024
qubits. We showed that errors inphase gate propagate little to thefurther bits.

More 69 articles were published（Invited Talks）
A. Tomita, A. Tajima, A. Tanaka, K.

Updating Quantum

Yoshino, Y. Nambu, S. Takahashi, S.

Cryptography andYorozu, “High-speed Quantum Key

Communications 2010

Distribution System for Metropolitan(UQCC 2010), Tokyo, Oct.

Networks”

18-20, 2010

A. Tomita, Interplay between Quantum

Tutorial Talk, 10th Asian

Computation and Quantum Information Conference on Quantum
Information Science(AQIS'10) , Tokyo, Japan
Aug.27-31, 2010
A. Tomita, “Test and measurement on

Proc. SPIE, Vol. 7236,

quantum key distribution systems”

Quantum Communications
Realized II, San Jose, CA,
USA , Jan. 28 (2009).

A. Tomita, “R&D and standardization

Plenary Talk (I), Updatingof QKD in Japan,”

Quantum Cryptography 2008,Tokyo, Japan, Dec. 1 (2008).

A. Tanaka, M. Fujiwara, S. W. Nam,

34th European Conf. Optical

Y. Nambu, S. Takahashi, W. Maeda, K.

Communication (ECOC

Yoshino, S. Miki, B. Baek, Z. Wang, 2008), pp. 1-4, Brussels,
A. Tajima, M. Sasaki, and A. Tomita,Belgium, Sep. 21-25(2008)“Quantum key distribution systems andfield trials”
8th Asian Conf. Quantum
A. Tomita, “Photonic systems forInformation Science (AQIS),

quantum information processing ”

Seoul, Korea, Aug. 27-30(2008)

More 27 invited talks were given.

ACTIVITIES for ACADEMIC COMMUNITY
year
1982-

Member, The Physical Society of Japan

1984-

Member, The Japanese Society of Applied Physics

1991-

Member, The Optical Society of America

1995-

Member, The Institute of Electronics, Information and Communication Engineers(IEICE, Japan)

1996-1997

Chief Committee Member, Laser and Quantum-electronics, IEICE

2004-2005

Program Committee, ERATO Conference on Quantum Information Science

2006

Local Committee,

International conference on quantum communication, measurement

and computing
2006-2008

Committee, Quantum Information Technology, IEICE

2007

Guest Editor,

2007

Program Committee, Optics East 2007 “Quantum Communications Realized”

2007,2008,2010

Organizing Committee, Updating Quantum Cryptography

2009

Program Committee, Photonic West 2009 “Quantum Communications Realized

2009

Program Committee,

2009-2010

Chief Guest Editor, IEICE Trans. Fundamentals

IEEE J. Selected Topics in Quantum Electronics,

II”

Asian Conference on Quantum Information Science

Quantum Cryptographic Systems”“Leading-Edge Developments in