picture Kenta Takata, Ph.D.
NTT Nanophotonics Center
Photonic Nanostructure Research Group,
Optical Science Laboratories,

NTT Basic Research Laboratories

Make it simple, elegant and practical!


- We are working home to fight against the pandemic of
  coronavirus (2020.4.10).
- Our work has been published in Communications Physics
- Our collaborative review paper has been published
  in Nanophotonics (2020.1.30).
- Nathan completed his internship placement.
  Hope to see him again (2019.12.20)!
- Had a talk in Frontiers in Optics, at Washington D.C. (2019.9.17).
- Mr. Nathan Roberts joined as my first intern (2019.7.1).
- Invited Dr. Ryan Hamerly as a guest presenter.
  Hope to see him soon (2019.6.24).
- Visited Mr. Kohei Kawabata at University of Tokyo.
  Thank him for fruitful discussion (2019.6.18).
- My e-mail address has been changed.
  Contacts to the old address will still be forwarded (2019.6.7).
- Talked at Optics and Laser 2019, at San Francisco (2019.6.3).
- Gave a talk at a JSAP spring meeting (2019.3.11).
- Presented a poster talk at a CREST meeting (2018.12.12).
- Launched a press release about the PRL paper (2018.12.5).
- Published a paper in Physical Review Letters (2018.11.20).
- Talked at a JSAP fall meeting (2018.9.19).
- Talked at PIERS 2018 (2018.8.4).
- Published an introductory article for non-experts (2018.7.11).
- Published a Japanese review paper (2018.5.17).
- Gave a presentation at CLEO 2018 (2018.5.14).
- Gave a poster talk at a CREST meeting (2017.12.21).
- Served as a tutor of NTT-BRL School.
  Thank all the students for visiting us! (2017.11.17).
- Submitted a preprint (2017.10.25).
- Gave two talks in a JSAP fall meeting (2017.9.8).
- Awarded by the Japanese Society of Applied Physics (2017.9.5).
- Gave a talk in ICO-24 (2017.8.24).
- Published a paper in Physical Review Applied (2017.5.26).
- A presentation was featured in Nature Photonics (2017.4.28).
- Published a paper in APL Photonics (2017.3.24).
- Gave a talk in a JSAP spring meeting (2017.3.15).

Email address

Feel free to contact:
e-mail address

Research fields

Nanophotonics, Nonlinear Optics, Quantum Optics, Semiconductor Physics

Research projects

My interest is to explore the intersection of future applications of advanced photonic crystal devices and novel concepts of basic photonic research, covering PT-symmetric optics (photonic exceptional points), topological photonics and coherent optical information processing circuits.


International journals

Introductory article, for non-experts

Domestic journal, in Japanese

Presentations, as talker

International conferences

Domestic conferences (Japanese)


  • Paper Award, NTT-BRL Director's Awards of the fiscal year 2018,
    "Photonic Topological Insulating Phase Induced Solely by Gain and Loss" (2019.3).
  • Young Scientist Presentation Award, The Japanese Society of Applied Physics (2017.9).

Other web pages (including whole publication list)

Association memberships

  • American Physical Society (APS)
  • The Optical Society (OSA)
  • The Japan Society of Applied Physics (JSAP)
  • The Physical Society of Japan (JPS)

Academic and professional experiences

  • Researcher, NTT Basic Research Laboratories  (2015.4 -)
  • Research Fellow (DC1), Japan Society for the Promotion of Science
    (2012.4 - 2015.3)
  • Visiting Student Researcher, Stanford University
    (2013.4 - 2013.9, 2010.10 - 2010.11)
  • Research Assistant, National Institute of Informatics  (2010.4 - 2012.10)
  • Participating Student, National Institute of Informatics  (2012.11 - 2015.3)
  • Intern, RIKEN  (2013.11 - 2015.3)

Internship students

  • Mr. Nathan Roberts (University of Bath, 2019.7 - 2019.12)

Refereeing activities

in Nature Photonics, Physical Review Letters, Optica, ACS Photonics, Physical Review Applied, Physical Review B, Optics Letters, Optics Express, Physical Review A, Scientific Reports, Applied Physics Express, Applied Physics B, etc.


Ph.D. course (2010.4 - 2015.3)

Department of Information and Communication Engineering,
Graduate School of Information Science and Technology,
University of Tokyo

PI: Prof. Yoshihisa Yamamoto (JST Program Manager, Stanford University, National Institute of Informatics)

Undergraduate course (2009.4 - 2010.3)

Department of Electrical and Electronic Engineering,
School of Engineering,
University of Tokyo

PI: Prof. Masaaki Tanaka and Prof. Shinobu Ohya (University of Tokyo)

Thesis: "Resonant tunneling spectroscopy on III-V ferromagnetic semiconductor GaMnAs surface layer" (Japanese)

Photonic Nanostructure Research Group
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