Optical Coherence Increase by Diffusion Enhanced Optical Pumping in a Rare-Earth Doped Crystal

Sacha Welinski; Alban Ferrier; Philippe Goldner; Alexey Tiranov; Moritz Businger; Mikael Afzelius

doi:10.1364/CLEO_QELS.2021.FM4M.4

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper FM4M.4
•https://doi.org/10.1364/CLEO_QELS.2021.FM4M.4

Optical Coherence Increase by Diffusion Enhanced Optical Pumping in a Rare-Earth Doped Crystal

Sacha Welinski, Alban Ferrier, Philippe Goldner, Alexey Tiranov, Moritz Businger, and Mikael Afzelius

CLEO: QELS_Fundamental Science 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Quantum Memory (FM4M)

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S. Welinski, A. Ferrier, P. Goldner, A. Tiranov, M. Businger, and M. Afzelius, "Optical Coherence Increase by Diffusion Enhanced Optical Pumping in a Rare-Earth Doped Crystal," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper FM4M.4.

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Abstract

We demonstrate a new spin polarization mechanism that combines optical pumping with spin diffusion to achieve large spin polarization in ¹⁷¹Yb³⁺:Y₂SiO₅. This is used to increase optical coherence lifetime from 0.3 to 0.8 ms.

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