[25p-D214-1~17] 3.10 Optical quantum physics and technologies

△ [25p-D214-4] Demonstration of atomic frequency comb time-multiplexed quantum memory protocol
in ¹⁶⁷Er³⁺:Y₂SiO₅ under no magnetic field

〇(M1)Shouichirou Yasui^1,2, Masaya Hiraishi³, Atsushi Ishizawa¹, Hiroo Omi⁴, Tomohiro Inaba¹, Xuejun Xu¹, Reina Kaji², Satoru Adachi², Takehiko Tawara⁵ (1.NTT BRL, 2.Grad. Sch. Eng. Hokkaido Univ., 3.Univ. of Otago, 4.Yamato Univ., 5.Nihon Univ.)

Keywords:Rare earth ion doped crystals, Quantum memory, Atomic frequency comb

We have conducted time-resolved hole-burning spectroscopy on an isotopically purified ¹⁶⁷Er³⁺:Y₂SiO₅ crystal, which is a promising quantum memory materials, to reveal the relaxation time of the hole spectrum. In addition, an atomic frequency comb (AFC) was fabricated by frequency-selective optical pumping, and an AFC memory protocol was demonstrated to store and read out light in the communication wavelength band.