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Multipartite fully-nonlocal quantum states

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arxiv 0911.3559 v3 pith:WMBFA37B submitted 2009-11-18 quant-ph

Multipartite fully-nonlocal quantum states

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keywords fully-nonlocalmultipartitequantumstatesconditionsstateaccordingallow
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We present a general method to characterize the quantum correlations obtained after local measurements on multipartite systems. Sufficient conditions for a quantum system to be fully-nonlocal according to a given partition, as well as being (genuinely) multipartite fully-nonlocal, are derived. These conditions allow us to identify all completely-connected graph states as multipartite fully-nonlocal quantum states. Moreover, we show that this feature can also be observed in mixed states: the tensor product of five copies of the Smolin state, a biseparable and bound entangled state, is multipartite fully-nonlocal.

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  1. All pure entangled states can lead to fully nonlocal correlations

    quant-ph 2026-04 unverdicted novelty 7.0

    Non-maximally entangled states exhibit full nonlocality under simple Schmidt coefficient conditions, and all pure entangled states can be activated to full nonlocality with multiple copies.