Creation of a high-resolution atomic frequency comb and optimization of the pulse sequence for high-efficiency quantum memory in <sup>167</sup>Er:Y<sub>2</sub>SiO<sub>5</sub>
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- S. Yasui
- NTT Corporation
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- M. Hiraishi
- NTT Corporation
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- A. Ishizawa
- NTT Corporation
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- H. Omi
- Yamato University
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- T. Inaba
- NTT Corporation
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- X. Xu
- NTT Corporation
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- R. Kaji
- Hokkaido University
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- S. Adachi
- Hokkaido University
抄録
<jats:p>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 <jats:sup>167</jats:sup>Er<jats:sup>3+</jats:sup>:Y<jats:sub>2</jats:sub>SiO<jats:sub>5</jats:sub> 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.</jats:p>
収録刊行物
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- Optics Continuum
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Optics Continuum 1 (9), 1896-, 2022-08-17
Optica Publishing Group