Kato Group, Nanoscale Quantum Photonics Laboratory, RIKEN. Carbon nanotube photonics and optoelectronics.

Kato Group

Nanoscale Quantum Photonics Laboratory, RIKEN

The Kato Group

We exploit state-of-the-art nanofabrication technologies to develop and engineer photonic and optoelectronic devices that utilize quantum effects, with focus on devices incorporating individual single-walled carbon nanotubes and atomically-thin layered materials.

Recent Publications

  • Preprints are available at arxiv.org/a/kato_y_1.
  • N. Fang, Y. R. Chang, D. Yamashita, S. Fujii, M. Maruyama, Y. Gao, C. F. Fong, K. Otsuka, K. Nagashio, S. Okada, Y. K. Kato Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes Nature Commun. 14, 8152 (2023). Link to publisher pdf
  • N. Fang, D. Yamashita, S. Fujii, K. Otsuka, T. Taniguchi, K. Watanabe, K. Nagashio, Y. K. Kato Quantization of mode shifts in nanocavities integrated with atomically thin sheets Adv. Opt. Mater. 10, 2200538 (2022). Link to publisher pdf
  • D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. Wang, and Y. K. Kato Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction Nature Commun. 13, 2814 (2022). Link to publisher pdf
  • H. Machiya, D. Yamashita, A. Ishii, and Y. K. Kato Evidence for near-unity radiative quantum efficiency of bright excitons in carbon nanotubes from the Purcell effect Phys. Rev. Research 4, L022011 (2022). Link to publisher pdf
  • C. F. Fong, Y. Ota, Y. Arakawa, S. Iwamoto, Y. K. Kato Chiral modes near exceptional points in symmetry broken H1 photonic crystal cavities Phys. Rev. Research 3, 043096 (2021). Link to publisher pdf
  • Z. Li, K. Otsuka, D. Yamashita, D. Kozawa, Y. K. Kato Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes ACS Photonics 8, 2367 (2021). Link to publisher pdf
  • K. Otsuka, N. Fang, D. Yamashita, T. Taniguchi, K. Watanabe, Y. K. Kato Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology Nature Commun. 12, 3138 (2021). Link to publisher pdf
  • D. Yamashita, H. Machiya, K. Otsuka, A. Ishii, Y. K. Kato Waveguide coupled cavity-enhanced light emission from individual carbon nanotubes APL Photonics 6, 031302 (2021). Link to publisher pdf