[12a-N103-1~11] 3.10 光量子物理・技術

▲ [12a-N103-10] Optical Coupling between Er³⁺ and Integrated Microring Resonators on Si

〇(D)Masaya Hiraishi^1,2、Tomohiro Inaba¹、Xuejun Xu¹、Haruki Sanada¹、Tai Tsuchizawa³、Atsushi Ishizawa¹、Takehiko Tawara⁴、Hiroo Omi⁵、Jevon Longdell²、Katsuya Oguri¹、Hideki Gotoh¹ (1.NTT BRL、2.Univ. of Otago、3.NTT Device Tech. Labs.、4.Nihon Univ.、5.Yamato Univ.)

キーワード：rare earth, resonator, erbium

Optical coupling between atoms (ions) and a resonator has gained great interest in both classical and quantum applications. Among these atoms and ions, erbium ions (Er³⁺) in solids are a promising candidate for laser-amplifiers and quantum memories. Here, we show the optical coupling between Er³⁺ ions in epitaxially grown single crystal (ErGd)₂O₃ thin film on Si and a high Q-factor microring resonator at cryogenic temperature from transmission and photoluminescence spectra.