*Takamitsu YAMANAKA¹, Atsushi KYONO², Yuki NAKAMOTO³, Svetlana KHARLAMOVA¹, Viktor STRUZKIN¹, Ho-kwang MAO¹, Russell HEMLY¹ (1.Carnegie Institution of Washington Geophysical Laboratory, 2.Division of Earth Evolution Sciences, Life and Environment Sciences, University of Tsukuba, 3.Center for Quantum Science and Technology Under Extreme Conditions, Osaka University)