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.
  • C. F. Fong, D. Yamashita, N. Fang, S. Fujii, Y.-R. Chang, T. Taniguchi, K. Watanabe, Y. K. Kato Self-Aligned Hybrid Nanocavities Using Atomically Thin Materials ACS Photonics 11, 2247 (2024). Link to publisher pdf
  • N. Fang, Y. R. Chang, S. Fujii, D. Yamashita, M. Maruyama, Y. Gao, C. F. Fong, D. Kozawa, K. Otsuka, K. Nagashio, S. Okada, Y. K. Kato Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures Nature Commun. 15, 2871 (2024). Link to publisher pdf
  • S. Fujii, N. Fang, D. Yamashita, D. Kozawa, C. F. Fong, Y. K. Kato van der Waals decoration of ultra-high-Q silica microcavities for χ(2)(3) hybrid nonlinear photonics Nano Lett. 24, 4209 (2024). Link to publisher pdf
  • 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