Faculty Members

LANGUAGE ≫ Japanese
kobayashi-hirokazu-1.jpg

Associate Professor
KOBAYASHI, Hirokazu

  • Year of birth: 1982
  • Gender: Male
  • Affiliation:
    - School of Systems Engineering
    - Electronic and Photonic Systems Engineering Course, Department of Engineering, Graduate School of Enginering
Areas of specialization
Laboratory/research office Laboratory of Light Control and Optical Network
We study about ultrahigh capacity optical network using MIMO (Multiple-Input Multiple-Output) technology and high precision non-invasive optical measurement including optical coherence tomography (OCT) and fiber sensing.
Current research topics
Educational background
Professional background
Licenses
Academic societies

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Courses

* Courses provided in English are shown with (E) mark

Undergraduate school
  • Introduction to Communication Systems
  • Introduction to Communication Technologies
  • Experiments of Electronic and Photonic 1
  • Graduation Thesis
  • Experiments of Electronic and Photonic 2
Graduate school
  • Seminar 1
  • Seminar 2
  • Individual Work for Graduate
  • Advanced Seminar 1
  • Advanced Seminar 2
  • Advanced Applied Mathematics II

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Research activities

Research papers
  1. Authors: Gianluca Ruffato, Samuele Brunetta, Hirokazu Kobayashi
    Title: A general conformal framework for regular cusp beams
    Journal: Optics Communications, Vol. 517, p. 128325, Elsevier
    Year: 2022
  2. Authors: Kazuhisa Ogawa, Natsuki Abe, Hirokazu Kobayashi, Akihisa Tomita
    Title: Complex counterpart of variance in quantum measurements for pre- and postselected systems
    Journal: Physical Review Research, Vol. 3, p. 033077, American Physical Society
    Year: 2021
  3. Authors: Kazuhisa Ogawa, Takumi Okazaki, Hirokazu Kobayashi, Toshihiro Nakanishi, Akihisa Tomita
    Title: Direct measurement of ultrafast temporal wavefunctions
    Journal: Optics Express, Vol. 29, No. 13, pp. 19403-19416, The Optical Society
    Year: 2021
  4. Authors: Gianluca Ruffato, Hirokazu Kobayashi
    Title: Roulette caustics in transformation optics of structured light beams
    Journal: Optics Communications, Vol. 490, pp. 126893-1-126893-8, Elsevier
    Year: 2021
  5. Authors: Mohamed El Ketara, Hirokazu Kobayashi, Etienne Brasselet
    Title: Sensitive vectorial optomechanical footprint of light in soft condensed matter
    Journal: Nature Photonics, Vol. 15, pp. 121-124, Springer Nature
    Year: 2020
  6. Authors: Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita
    Title: Operational formulation of weak values without probe systems
    Journal: Physical Review A, Vol. 101, No. 4, pp. 042117-1-042117-12, American Physical Society
    Year: 2020
  7. Authors: Satoru Takashima, Hirokazu Kobayashi, Katsushi Iwashita
    Title: Integer multiplier for the orbital angular momentum of light using a circular-sector transformation
    Journal: Physical Review A, Vol. 100, No. 6, pp. 063822-1-063822-14, American Physics Society
    Year: 2019
  8. Authors: Kazuhisa Ogawa, Osamu Yasuhiko, Hirokazu Kobayashi, Toshihiro Nakanishi, Akihisa Tomita
    Title: A framework for measuring weak values without weak interactions and its diagrammatic representation
    Journal: New Journal of Physics, Vol. 21, No. 4, p. 043013, IOP Publishing
    Year: 2019
  9. Authors: Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita
    Title: Classical reconstruction of interference patterns of position-wave-vector–entangled photon pairs by the time-reversal method
    Journal: Physical Review A, Vol. 97, No. 2, pp. 023823-1-023823-10
    Year: 2018
  10. Authors: Mikko Tukiainen, Hirokazu Kobayashi, Yutaka Shikano
    Title: Quantification of concurrence via weak measurement
    Journal: Physical Review A, Vol. 95, p. 052301
    Year: 2017
  11. Authors: Badar Mudabbir, KOBAYASHI Hirokazu, IWASHITA Katsushi
    Title: Chromatic dispersion measurement with double sideband phase noise canceled OFDR
    Journal: Optics Communications, Vol. 356, pp. 350-355
    Year: 2015
  12. Authors: Yusuf Turek, Hirokazu Kobayashi, Tomotada Akutsu, Chang-Pu Sun, Yutaka Shikano
    Title: Post-selected von Neumann measurement with Hermite–Gaussian and Laguerre–Gaussian pointer states
    Journal: New Journal of Physics, Vol. 17, p. 083029, IOP Institute of Physics
    Year: 2015
  13. Authors: Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano
    Title: Observation of nonlinear variations in a three-vertex geometric phase in a two-photon polarization qutrit
    Journal: Physical Review A, Vol. 91, p. 062118, American Physical Society
    Year: 2015
  14. Authors: Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, KOBAYASHI Hirokazu, Masao Kitano
    Title: Classical realization of dispersion cancellation by time-reversal method
    Journal: Physical Review A, Vol. 91, p. 013846, American Physical Society
    Year: 2015
  15. Authors: KOBAYASHI Hirokazu, NONAKA Koji, YUTAKA Shikano
    Title: Stereographical visualization of a polarization state using weak measurements with an optical-vortex beam
    Journal: Physical Review A, Vol. 89, p. 053816
    Year: 2014
  16. Authors: Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano
    Title: Time-reversed two-photon interferometry for phase superresolution
    Journal: Physical Review A, Vol. 88, p. 063813
    Year: 2013
  17. Authors: LU Mifang, KOBAYASHI Hirokazu, NONAKA Koji
    Title: Polarization-Stabilized Pulse Correlation Measurement for Remote Fiber Sensing Using Polarization Scrambled Pulses
    Journal: Japanese Journal of Applied Physics, Vol. 52, pp. 126603-1-126603-8
    Year: 2013
  18. Authors: LU Mifang, NONAKA Koji, KOBAYASHI Hirokazu, Yang Jun, Yuan Libo
    Title: Quasi-distributed region selectable gas sensing for long distance pipeline maintenance
    Journal: Measurement Science and Technology, Vol. 24, No. 9, p. 095104
    Year: 2013
  19. Authors: KOBAYASHI Hirokazu, PUENTES Graciana, SHIKANO Yutaka
    Title: Extracting joint weak values from two-dimensional spatial displacements
    Journal: Physical Review A, Vol. 86, pp. 053805-1-053805-4
    Year: 2012
  20. Authors: NONAKA Koji, KOBAYASHI Hirokazu, Toshimasa Tszuki, Yuhei Masaoka, Xunjian Xu
    Title: Suppression of instability on sensing signal of optical pulse correlation measurement in remote fiber sensing
    Journal: Journal of Sensors, Vol. 2012, pp. 107847-107853, Hindawi Publishing Corporation
    Year: 2012
  21. Authors: NONAKA Koji, KOBAYASHI Hirokazu, 北野 正雄
    Title: Helical mode conversion using conical reflector
    Journal: Optics Express, Vol. 20, No. 13, pp. 14064-14074, Optical Society of America(OSA)
    Year: 2012
  22. Authors: H. Kobayashi, Y. Ikeda, S. Tamate, T. Nakanishi, M. Kitano
    Title: Nonlinear behavior of geometric phases induced by photon pairs
    Journal: Phys. Rev. A, Vol. 83, p. 063808
    Year: 2011
  23. Authors: H. Kobayashi, S. Tamate, T. Nakanishi, K. Sugiyama, M. Kitano
    Title: Direct observation of geometric phases without state evolution
    Journal: AIP Conference Proceedings (QCMC), Vol. 1363, pp. 373-376
    Year: 2011
  24. Authors: H. Kobayashi, S. Tamate, T. Nakanishi, K. Sugiyama, M. Kitano
    Title: Observation of geometric phases in quantum erasers
    Journal: J. Phys. Soc. Jpn., Vol. 80, p. 034401
    Year: 2011
  25. Authors: H. Kobayashi, S. Tamate, T. Nakanishi, K. Sugiyama, M. Kitano
    Title: Direct observation of geometric phases using a three-pinhole interferometer
    Journal: Phys. Rev. A, Vol. 81, p. 012104
    Year: 2010
  26. Authors: T. Nakanishi, H. Kobayashi, K. Sugiyama, M. Kitano
    Title: Full Quantum Analysis of Two-Photon Absorption Using Two-Photon Wave Function: Comparison of Two-Photon Absorption with One-Photon Absorption
    Journal: J. Phys. Soc. Jpn., Vol. 78, p. 104401
    Year: 2009
  27. Authors: T. Nakanishi, K. Sakemi, H. Kobayashi, K. Sugiyama, M. Kitano
    Title: Two-Photon Interference of Photon Pairs Created in Photonic Crystal Fibers
    Journal: J. Phys. Soc. Jpn., Vol. 78, p. 024402
    Year: 2009
  28. Authors: S. Tamate, H. Kobayashi, T. Nakanishi, K. Sugiyama, M. Kitano
    Title: Geometrical aspects of weak measurements and quantum erasers
    Journal: New. J. Phys., Vol. 11, p. 093025
    Year: 2009
Invited lectures
  1. Optical Torque in Liquid Crystal induced by Three-Dimensional Vectorial Characteristic of Optical Field, 2021
  2. Integer Multiplier of Optical Orbital Angular Momentum using Spatial Light Modulator, Technical Committee on Photonic Network, zoom, 2021
Awards
  1. Physical Review A, Editor's Suggestion [Phys. Rev. A, 89, 053816 (2014)], American Physical Society, 2014
  2. Physical Review A, Editor's Suggestion [Phys. Rev. A, 88, 063813 (2013)], American Physical Society, 2013
  3. JPSJ Editor's Choice [J. Phys. Soc. Jpn., Vol.80, 034401 (2011)], The Physical Society of Japan, 2011
Grants-in-Aid for Scientific Research from the Japanese government
  1. Project title: Generation of higher-order helical beam for spatial mode mulplexing by using conical reflector
    Category: Grant-in-Aid for Young Scientists (B)
    Project number: 25790068
    Project period: 2013-2014
    Total budget amount: 4,420,000 yen
    Keywords:
  2. Project title: Visualization of Gouy phase of higher order Laguerre Gauss mode and its application to optical measurement
    Category: Grant-in-Aid for Early-Career Scientists
    Project number: 18K14151
    Project period: 2018-2019
    Total budget amount: 4,160,000 yen
    Keywords:
  3. Project title: Mode conversion of Laguerre Gaussian beam with radial mode by geometric transformation
    Category: Grant-in-Aid for Scientific Research (C)
    Project number: 20K05364
    Project period: 2020-2022
    Total budget amount: 4,420,000 yen
    Keywords:

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Social activities

Committee roles
  1. IEICE Shikoku Sector, IEICE, 2021-2023

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