High-Fidelity Entanglement Distribution Through Berlin Using an Operator’s Fiber Infrastructure

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paper

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MatMaeMehSha

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Opt

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We successfully integrated an automated system for distributing entangled photons across a 30-km field-deployed fiber in Berlin. Over a 17-day continuous operation, it achieved > 99% fidelity, underscoring its potential for scalable, city-wide quantum net-works.

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