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Simulation of partial entanglement with nonsignaling resources

Popescu, Sandu
Published in Physical Review. A. 2008, vol. 78, 052111
Abstract With the goal of gaining a deeper understanding of quantum non-locality, we decompose quantum correlations into more elementary non-local correlations. We show that the correlations of all pure entangled states of two qubits can be simulated without communication, hence using only non-signaling resources. Our simulation model works in two steps. First, we decompose the quantum correlations into a local and a non-local part. Second, we present a model for simulating the nonlocal part using only non-signaling resources. In our model partially entangled states require more nonlocal resources than maximally entangled states, but the less the state is entangled, the less frequently must the nonlocal resources be used.
Keywords Quantum computingQuantum entanglement
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BRUNNER, Nicolas et al. Simulation of partial entanglement with nonsignaling resources. In: Physical Review. A, 2008, vol. 78, p. 052111. doi: 10.1103/PhysRevA.78.052111 https://archive-ouverte.unige.ch/unige:788

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Deposited on : 2009-02-13

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