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Characterizing the nonlocal correlations of particles that never interacted

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arxiv 0911.1314 v1 pith:5IL4A4TZ submitted 2009-11-06 quant-ph

Characterizing the nonlocal correlations of particles that never interacted

classification quant-ph
keywords bellentangledentanglementinequalityinteractedlocalneverpair
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Quantum systems that have never interacted can become nonlocally correlated through a process called entanglement swapping. To characterize nonlocality in this context, we introduce local models where quantum systems that are initially uncorrelated are described by uncorrelated local variables. While a pair of maximally entangled qubits prepared in the usual way (i.e., emitted from a common source) requires a visibility close to 70% to violate a Bell inequality, we show that an entangled pair generated through entanglement swapping will already violate a Bell inequality for visibilities as low as 50% under our assumption.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The minimal example of quantum network Bell nonlocality

    quant-ph 2026-05 unverdicted novelty 8.0

    Quantum nonlocality is possible in the triangle network with no inputs and binary outputs, which is the smallest such scenario by number of variables and outcomes.

  2. Genuine Global Kochen-Specker Contextuality as Classical Coordination Cost

    quant-ph 2026-06 unverdicted novelty 7.0

    Genuine global KS contextuality is framed as the classical coordination cost needed to maintain a global noncontextual explanation from locally available information in multipartite systems.