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Entanglement Distribution over Ultra-Low-Loss Fiber with a Silicon Chip Source

Jinyi Du, Xingjian Zhang, En Teng Lim, George F. R. Chen, Hongwei Gao, Dawn T. H. Tan, Alexander Ling

Jan 1, 2025
Abstract

We develop and demonstrate a silicon chip generating 460,000 entangled photon pairs per second with 97.90(3)% fidelity. The photons were transmitted over 155 km of deployed fiber (66 dB loss) and ultra-low-loss fiber spools (0.16 dB/km), achieving extended transmission distances.

1Authors

AuthorAffiliationh-indexCitations
Jinyi DuCentre for Quantum Technologies461
Xingjian ZhangCentre for Quantum Technologies9293
En Teng LimCentre for Quantum Technologies
George F. R. ChenSingapore University of Technology and Design15896
Hongwei GaoSingapore University of Technology and Design271,811
Dawn T. H. TanAgency for Science, Technology and Research384,505
Alexander LingSingapore University of Technology and Design242,695

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