90%-Efficient Optical Storage in a Rare-Earth Crystal with a Low-Loss Impedance-Matched Cavity

@misc{sun202690efficient,
  title = {{90%-Efficient Optical Storage in a Rare-Earth Crystal with a Low-Loss Impedance-Matched Cavity}},
  author = {Weiye Sun and Fudong Wang and Mucheng Guo and Xiantong An and Zhenqi Xu and Zhehao Xu and Xingmin He and Matthew J. Sellars and Shuping Liu and and Manjin Zhong},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.19807},
  eprint = {2609.19807},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.19807},
}

TY  - UNPB
TI  - 90%-Efficient Optical Storage in a Rare-Earth Crystal with a Low-Loss Impedance-Matched Cavity
AU  - Weiye Sun
AU  - Fudong Wang
AU  - Mucheng Guo
AU  - Xiantong An
AU  - Zhenqi Xu
AU  - Zhehao Xu
AU  - Xingmin He
AU  - Matthew J. Sellars
AU  - Shuping Liu
AU  - and Manjin Zhong
PY  - 2026
DA  - 2026/09/17
PB  - arXiv
DO  - 10.48550/arxiv.2609.19807
UR  - https://arxiv.org/abs/2609.19807
AB  - High-efficiency optical storage in rare-earth-ion-doped crystals is challenging because of their typically weak optical absorption,which makes cavity-enhanced memories highly sensitive to parasitic intracavity loss. Here we demonstrate a 90.1(5)% storage efficiency for coherent optical pulses in an impedance-matched cavity atomic-frequency-comb memory based on Eu3+:Y2SiO5. The Brewster-angle configuration of the crystal and fully cryogenic Fabry-Pérot cavity reduce the round-trip intracavity loss to 0.37%. Quantitative modeling shows that further improvement is limited primarily by AFC preparation and its associated dispersive response rather than by residual cavity loss,identifying the principal requirements for further approaching unity efficiency.
ER  -