All publications (RK)

All publications (RK: First author: 10, Co-author: 11)

  1. Ryota Katsumi, Kosuke Takada, Kenta Kawai, Daichi Sato, and Takashi Yatsui, “High-sensitivity nanoscale quantum sensors based on a diamond micro-resonator,” Communications Materials, Volume 6, Article number: 49, March 2025, DOI: 10.1038/s43246-025-00770-x
  2. Ryota Katsumi, Yasutomo Ota, Mohamed Benyoucef, “Telecom-Band Quantum Dots Compatible with Silicon Photonics for Photonic Quantum Applications,” Advanced Quantum Technologies, 2300423, February 2024, DOI: 10.1002/qute.202300423
  3. Kosuke Takada, Ryota Katsumi, and Takashi Yatsui, “Sensitivity improvement of a single-NV diamond magnetometer using a chiral waveguide,” Optics Express, Vol. 32, Issue 1, pp. 795-802, January 2024, DOI: 10.1364/OE.509860
  4. Kenji Iida, Takashi Takeuchi, Ryota Katsumi, and Takashi Yatsui, “Variations in the Photoexcitation Mechanism of an Adsorbed Molecule on a Gold Nanocluster Governed by Interfacial Contact,” The Journal of Physical Chemistry A, Vol. 127, Iss. 37, pp. 7718-7726, September 2023, DOI: 10.1021/acs.jpca.3c03775
  5. Ryota Katsumi, Kosuke Takada, Shun Naruse, Kenta Kawai, Daichi Sato, Takeshi Hizawa, and Takashi Yatsui, “Hybrid integration of ensemble nitrogen-vacancy centers in single-crystal diamond based on pick-flip-and-place transfer printing,” Applied Physics Letters, Vol. 123, Iss. 11, 111108, September 2023, DOI: 10.1063/5.0161268
  6. Ryuichi Hirota, Toru Murayama, Ryota Katsumi, Tokuhisa Kawawaki, Shin Yabukami, Ryuji Igarashi, Yuichi Negishi, Moriaki Kusakabe, Masaki Sekino, Takashi Yatsui, and Akihiro Kuwahata, “Rapid Virus Detection using Magnetic Second Harmonics of Superparamagnetic Iron Oxide Nanoparticles,” AIP Advances, Vol. 13, 025144, February 2023, DOI: 10.1063/9.0000483
  7. Ryota Katsumi, Yasutomo OTA, Takeyoshi Tajiri, Satoshi IWAMOTO, Kaur Ranbir, Johann Peter Reithmaier, Mohamed Benyoucef, and Yasuhiko Arakawa, “CMOS-compatible integration of telecom band InAs/InP quantum-dot single-photon sources on a Si chip using transfer printing,” Applied Physics Express, Vol. 16, 012004, December 2022. DOI: 10.35848/1882-0786/acabaa
  8. Ryota Katsumi, Takeshi Hizawa, Akihiro Kuwahata, Shun Naruse, Yuji Hatano, Takayuki Iwasaki, Mutsuko Hatano, Fedor Jelezko, Shinobu Onoda, Takeshi Ohshima, Masaki Sekino, and Takashi Yatsui, “Transfer-printing-based integration of silicon nitride grating structure on single-crystal diamond toward sensitive magnetometers,” Appl. Phys. Lett., Vol. 121, Iss. 16, 161103, October 2022, DOI: 10.1063/5.0107854
  9. Ryota Katsumi, Masaki Sekino, and Takashi Yatsui, “Design of an ultra-sensitive and miniaturized diamond NV magnetometer based on a nanocavity structure,” Japanese Journal of Applied Physics, Vol. 61, No.8, 082004, August 2022, DOI: 10.35848/1347-4065/ac7e10
  10. Ryuichi Hirota, Toru Murayama, Ryota Katsumi, Tokuhisa Kawawaki, Shin Yabukami, Ryuji Igarashi, Yuichi Negishi, Moriaki Kusakabe, Masaki Sekino, Takashi Yatsui, Akihiro Kuwahata, “Virus Detection using Second Harmonics of Magnetic Nanoparticles,” IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Vol. 17, No. 8, 1228-1230, August 2022, DOI: 10.1002/tee.23613
  11. Kazuhiro Kuruma, Hironobu Yoshimi, Yasutomo Ota, Ryota Katsumi, Masahiro Kakuda, Yasuhiko Arakawa, Satoshi Iwamoto, “Topologically-Protected Single-Photon Sources with Topological Slow Light Photonic Crystal Waveguides,” Laser & Photonic Reviews, Vol. 16, Iss. 8, 2200077, August 2022, DOI: 10.1002/lpor.202200077 (Journal Impact Factor = 13.138)
  12. Ryota Katsumi, Yasutomo Ota, Takeyoshi Tajiri, Masahiro Kakuda, Satoshi Iwamoto, Hidefumi Akiyama, and Yasuhiko Arakawa, “Unidirectional output from a quantum-dot single-photon source hybrid integrated on silicon,” Optics Express, Vol. 29, Iss. 23, pp. 37117-37127, October 2021, DOI: 10.1364/oe.440218
  13. Hironobu Yoshimi, Takuto Yamaguchi, Ryota Katsumi, Yasutomo Ota, Yasuhiko Arakawa, and Satoshi Iwamoto, “Experimental demonstration of topological slow light waveguides in valley photonic crystals,” Optics Express, Vol. 29, Iss. 9, pp. 13441-13450, April 2021, DOI: 10.1364/OE.422962
  14. R. Katsumi, Y. Ota, A. Osada, T. Tajiri, T. Yamaguchi, M. Kakuda, S. Iwamoto, H. Akiyama, and Y. Arakawa, “In situ wavelength tuning of quantum-dot single-photon sources integrated on a CMOS-processed silicon waveguide”, Appl. Phys. Lett., Vol. 116, 041103, (selected as “Editor’s Pickups”), January 2020, DOI: 10.1063/1.5129325
  15. Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto, “Photonic crystal nanocavity based on a topological corner state”, Optica, Vol. 6, 786, May 2019, DOI: 10.1364/optica.6.000786
  16. T. Yamaguchi, Y. Ota, R. Katsumi, K. Watanabe, S. Ishida, A. Osada, Y Arakawa and S. Iwamoto, “GaAs valley photonic crystal waveguide with light-emitting InAs quantum dots”, Appl. Phys. Express, Vol. 12, 62005, May 2019, DOI: 10.7567/1882-0786/ab1cc5
  17. R. Katsumi, Y. Ota, A. Osada, T. Yamaguchi, T. Tajiri, M. Kakuda, S. Iwamoto, H. Akiyama and Y. Arakawa, “Quantum-dot single-photon source on a CMOS silicon photonic chip integrated using transfer printing”, APL Photonics, Vol. 4, 036105, March 2019, DOI: 10.1063/1.5087263
  18. A. Osada, Y. Ota, R. Katsumi, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Strongly Coupled Single-Quantum-Dot–Cavity System Integrated on a CMOS-Processed Silicon Photonic Chip”, Phys. Rev. Appl., Vol. 11, 024071, February 2019, DOI: 10.1103/physrevapplied.11.024071
  19. Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Topological photonic crystal nanocavity laser”, Commun. Phys., Vol. 1, 86, November 2018, DOI: 10.1038/s42005-018-0083-7
  20. A. Osada, Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa “Transfer-printed quantum-dot nanolasers on a silicon photonic circuit”, Appl. Phys. Express, Vol. 11, 072002, June 2018, DOI: 10.7567/apex.11.072002
  21. R. Katsumi, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa “Transfer-printed single-photon sources coupled to wire waveguides”, Optica, Vol. 5, 691, May 2018, DOI: 10.1364/optica.5.000691

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