A nonlinear criterion detects coherence transfer in quantum networks with only two measurements of network-state populations, remaining valid even with uncharacterized checkpoint nodes, and is experimentally shown in four- and six-photon entanglement networks.
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Overview of recent analytical and numerical developments in QKD security proofs that incorporate imperfections to re-establish security under realistic conditions.
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Coherence Transfer in Quantum Networks
A nonlinear criterion detects coherence transfer in quantum networks with only two measurements of network-state populations, remaining valid even with uncharacterized checkpoint nodes, and is experimentally shown in four- and six-photon entanglement networks.
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Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs
Overview of recent analytical and numerical developments in QKD security proofs that incorporate imperfections to re-establish security under realistic conditions.