Mitsuyoshi Takahata is an assistant professor in the Department of Applied Physics at Waseda University, Japan. He received his Ph.D. in physics in 2018 from Kyoto University, Japan. He pursued the nonlocal coupling of light with excitons in semiconductor confined systems in his doctoral research. He then moved to Waseda University to undertake experiments on cavity quantum electrodynamics. He has been developing optical nanofiber cavities of ultrahigh efficiency and studying interactions between near-field photons and cold atoms surrounding a nanofiber for application to quantum communication devices.