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The Japan Society of Applied Physics

Rabi Oscillation Between Hyperfine Levels in 167 Er 3+ :Y 2 SiO 5

Masaya Hiraishi, Mark IJspeert, Takehiko Tawara, Hiroo Omi, Hideki Gotoh

Published Feb 8, 2018• 0 citations
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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

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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.

Optics Continuum•Aug 10, 2022•9 citations
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.