Work

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

Year: 2026

Type: preprint

Abstract: 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.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.19807

Authors: Sun, Weiye, Wang, Fudong, Guo, Mucheng, An, Xiantong, Xu, Zhenqi, Xu, Zhehao, He, Xingmin, Sellars, Matthew J., Liu, Shuping, Zhong, and Manjin

Institutions: Southern University of Science and Technology, Shenzhen International Quantum Academy, Australian National University

Language: English

Topic: Quantum optics and atomic interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, National Science and Technology Major Project, National Key Research and Development Program of China, Basic and Applied Basic Research Foundation of Guangdong Province

Awards: G1526004466, G1661619624, G2917889735, G3557943267, G4938085717, G5903064408, G665148623, G8577856385, G9000362882

OpenAlex ID: W7213594776

Cites:

Cited by:

Related to: 10