[12a-N103-1~11] 3.10 Optical quantum physics and technologies

▲ [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.)

Keywords: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.