Creation of a high-resolution atomic frequency comb and optimization of the pulse sequence for high-efficiency quantum memory in 167 Er:Y 2 SiO 5

作者：S. Yasui, Masaya Hiraishi, Atsushi Ishizawa, Hiroo Omi, Tomohiro Inaba, Xuejun Xu, R. Kaji, S. Adachi, Takehiko Tawara · 发表于：Optics Continuum · 年份：2022 · DOI：10.1364/optcon.457429 · 被引用次数：10 · 研究领域：Quantum optics and atomic interactions、Atomic and Subatomic Physics Research、Photorefractive and Nonlinear Optics

We created high-resolution atomic frequency combs (AFCs) and optimized the pulse sequence used in AFC memory to realize highly efficient AFC quantum memory using the 167 Er 3+ :Y 2 SiO 5 hyperfine level system. As a result, the formation and relaxation times of AFCs were revealed, and AFCs with a resolution of 800 kHz were created by using an appropriate pump light intensity. An efficiency of 0.16% with a memory time of 0.5 µs was achieved even under a zero magnetic field and a 10 ppm Er concentration sample. This result paves the way for realizing highly efficient communication-wavelength AFC quantum memory.