[19p-A32-1~17] 3.9 Optical quantum physics and technologies

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[19p-A32-1] Identification of hyperfine level structure in ¹⁶⁷Er³⁺:Y₂SiO₅ crystal

〇(DC)Shouichirou Yasui^1,2, Tomohiro Inaba¹, Atsushi Isizawa³, Kenichi Hitatchi¹, Hiroo Omi⁴, Kyuma Matsuura², Reina Kaji², Takehiko Tawara³, Satoru Adachi², Xuejun Xu¹, Haruki Sanada¹ (1.NTT BRL, 2.Grad. Sch. Eng., Hokkaido Univ., 3.Nihon Univ., 4.Yamato Univ.)

Keywords:

Optical quantum memory,Rare earth ion doped crystal,Spectral hole burning

¹⁶⁷Er³⁺:Y₂SiO₅ crystals accessible by telecommunication wavelength photons have attracted attention as a promising quantum memory material, but quantitative evaluation of the level spacing and population of ¹⁶⁷Er ions has been difficult due to the complexity of their hyperfine level structure. In this study, we experimentally identified the level spacing by the spectral hole burning (SHB) method and simulated the obtained SHB spectra. As a result, the SHB spectrum was reproduced, and both theoretical and experimental identification of the hyperfine level spacing was achieved.