Researchers at the University of Science and Technology of China and the Jinan
Quantum Technology Research Institute reported a high‑efficiency, low‑noise
quantum frequency conversion from 393 nm (UV) to 1,550 nm (telecom) that enables
interfacing trapped‑ion memories with optical fiber. The team led by Pan
Jianwei, Zhang Qiang and Zheng Mingyang said the result sets an international
record for conversion efficiency and noise in this wavelength range and provides
key technology for remote interconnection of trapped‑ion nodes in scalable
quantum networks. The findings are published in Physical Review Letters.
