Yasuhiko Arakawa Yasuhiko Arakawa Yasuhiko Arakawa (Japanese , "Arakawa Yasuhiko"; born 6 November 1952) is a Japanese physicist. His research focuses on semiconductor physics, including growth of nanostructures and their optoelectronic applications. Among his main achievements are the proposal of the concept of quantum dots and their application to quantum dot lasers, the observation of exciton-polariton Rabi-splitting in a semiconductor microcavity, or, recently, the first 3D photonic crystal nanocavity lasers with quantum dot gain. Yasuhiko Arakawa received a B.S. degree in 1975 and a Ph.D. degree in 1980, respectively, from the University of Tokyo, both in Electronics Engineering. In 1981 he became
Sumida River on the story. The kabuki play, "Sumida-gawa — Gonichi no Omokage", is perhaps better known by the title "Hokaibo", which is the name of the central character. This stage drama was written by Nakawa Shimesuke, and it was first produced in Osaka in 1784. The play continues to be included in kabuki repertoire in Japan; and it is also performed in the West. It was recreated by the Heisei Nakamura-za in the Lincoln Center Festival in New York in the summer of 2007, with Nakamura Kanzaburō XVIII leading the cast. The Sumida River Fireworks, which are recognized as one of