Experimental generation of frequency-entangled qudits shows 98% visibility in a fiber network, indicating strong entanglement.
We report the generation and distribution of frequency-entangled qudits with high dimensions over a 0.77-km fiber network via hybrid quantum interference. The qudits exhibit 98% two-photon visibility, demonstrating high entanglement and robustness for practical applications.
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Chen et al. (2025) studied this question.
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