988 citations · 4.6k across the 54 of their papers we have counts for
54 papers
Optical Properties of Chiral Three-Dimensional Photonic Crystals made from Semiconductors
Shun Takahashi, Takeyoshi Tajiri, Yasuhiko Arakawa +2
We perform a theoretical and numerical study of the optical properties of both direct and inverse three-dimensional (3D) chiral woodpile structures, and a corresponding chiral Brag…
Coherent interaction of a-few-electron quantum dot with a terahertz optical resonator
Kazuyuki Kuroyama, Jinkwan Kwoen, Yasuhiko Arakawa +1
We have investigated light-matter hybrid excitations in a quantum dot (QD)-terahertz (THz) optical resonator coupled system. We fabricate a gate-defined QD in the vicinity of a THz…
Topologically-protected single-photon sources with topological slow light photonic crystal waveguides
Kazuhiro Kuruma, Hironobu Yoshimi, Yasutomo Ota +4
Slow light waveguides are advantageous for implementing high-performance single-photon sources required for scalable operation of integrated quantum photonic circuits (IQPCs), thou…
Unidirectional output from a quantum-dot single-photon source hybrid integrated on silicon
Ryota Katsumi, Yasutomo Ota, Takeyoshi Tajiri +4
We report a quantum-dot single-photon source (QD SPS) hybrid integrated on a silicon waveguide embedding a photonic crystal mirror, which reflects photons and enables efficient uni…
A large-scale single-mode array laser based on a topological edge mode
Natsuko Ishida, Yasutomo Ota, Wenbo Lin +3
Topological lasers have been intensively investigated as a strong candidate for robust single-mode lasers. A typical topological laser employs a single-mode topological edge state,…
Experimental demonstration of topological slow light waveguides in valley photonic crystals
Hironobu Yoshimi, Takuto Yamaguchi, Ryota Katsumi +3
We experimentally demonstrate topological slow light waveguides in valley photonic crystals (VPhCs). We employed a bearded interface formed between two topologically-distinct VPhCs…