Demonstration of ultra-long population storage and ultra-narrow linewidths in quantum networks using erbium-doped silica fibers.
We demonstrate ultra-long population storage ( ∼ 9 hours) and ultra-narrow homogeneous linewidths ( ∼ 8 kHz) in erbium-doped silica fibers (EDF) at ∼ 7 mK using spectral hole burning and photon-echo techniques. These results establish EDF as a strong candidate for fiber-based quantum networks.
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Bornadel et al. (2025) studied this question.
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