Members

Member List

Kensuke Homma

QUP Affiliate member

Associate Professor
Hiroshima University

e-mail khomma-at-hiroshima-u.ac.jp

I have performed experiments on various collisional systems, including high-energy electron-proton collisions, proton-proton collisions, proton-nucleus collisions, and nucleus-nucleus collisions. Currently, I am immersed in a general search for low-mass pseudo Nambu-Goldstone bosons, which could be dark components of the Universe by utilizing stimulated resonant photon colliders where two or three intense laser fields collide.

Research Content

By directly pumping the vacuum (resonant particle production) with intense coherent lights such as ultrashort pulsed lasers and exploring its de-excitation (stimulated resonant particle decay), we can discuss the effects such as virtual charged particle loops and possibly low-mass field exchanges such as axion-like particles which can be sources of dark matter. Up to now, high intensity lasers have been used as pumping lights. This is now being extended to search for axion-like particles in different mass ranges by combining pumping lights of different wavelengths, including microwaves. As the wavelength of the signal light associated with stimulated deexcitation stretches and contracts due to various beam wavelengths, it is necessary to flexibly change the photon sensors used in the search according to the beam wavelengths. We are looking forward to developing the superconducting sensors at QUP needed for the multi-wavelengths pumping.

© 2021 International Center for Quantum-field Measurement Systems for Studies of the Universe and Particles