Creation of a high-resolution atomic frequency comb and optimization of the pulse sequence for high-efficiency quantum memory in 167Er:Y2SiO5
- 17 August 2022
- journal article
- research article
- Published by Optica Publishing Group in Optics Continuum
- Vol. 1 (9) , 1896-1908
Abstract
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 167Er3+:Y2SiO5 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.Keywords
Funding Information
- Japan Society for the Promotion of Science (19H02636, 21H01745, 22H01995)
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