Special Colloquium
Department of Physics, NCU
Photonic Metasurfaces for Light Manipulation in Demand
Speaker
Dr. Yuki Inoue
Institute of Physics, Academia Sinica
Date 2018.02.07 (Wed)
Time 11:00
Place S4-625
Abstract:
The discovery of Gravitational Wave (GW) marked an opening of a new era of multi-messenger
GW astronomy. Exploring the new physics under the extreme gravity condition and eventually challenge the fundamental physics such as General Relativity and Cosmology in high precision, accurate calibration of the GW form is essential.
Our group is working on KAGRA, which employs 3km-scale interferometer with the cryogenic and underground location technology that will be used in next-generation experiments. We expect to solve the degeneracies of parameters with world wide observation, and in particular, the polarization of GWs. Joint LIGO-Virgo-KAGRA (LVK) observations from 2019 will put us on the frontiers of GW astronomy and cosmology. We developed the photon calibrator for KAGRA, which can push the mirror surface with photon pressure. Thanks to this technology, we can reach the precision of amplitude and phase of the gravitational wave to 1% and 1 degree, respectively.
In this talk, we report the progress of the KAGRA calibration and future plans for accurate
measurement of GWs and their implications on the fundamental physics.