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Nonlocality of cluster states of qubits

Authors
Schenck, Emmanuel
Aspelmeyer, Markus
Published in Physical Review. A. 2005, vol. 71, no. 4
Abstract We investigate cluster states of qubits with respect to their nonlocal properties. We demonstrate that a Greenberger-Horne-Zeilinger (GHZ) argument holds for any cluster state: more precisely, it holds for any partial, thence mixed, state of a small number of connected qubits (five, in the case of one-dimensional lattices). In addition, we derive a Bell inequality that is maximally violated by the four-qubit cluster state and is not violated by the four-qubit GHZ state.
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SCARANI, Valerio et al. Nonlocality of cluster states of qubits. In: Physical Review. A, 2005, vol. 71, n° 4. https://archive-ouverte.unige.ch/unige:47355

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Deposited on : 2015-02-27

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