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Orbital entanglement and violation of Bell inequalities in mesoscopic conductors

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Published in Physical Review Letters. 2003, vol. 91, no. 15, p. 157002
Abstract We propose a spin-independent scheme to generate and detect two-particle entanglement in a mesoscopic normal-superconductor system. A superconductor, weakly coupled to the normal conductor, generates an orbitally entangled state by injecting pairs of electrons into different leads of the normal conductor. The entanglement is detected via violation of a Bell inequality, formulated in terms of zero-frequency current cross-correlators. It is shown that the Bell inequality can be violated for arbitrary strong dephasing in the normal conductor.
Keywords Mesoscopic systems and quantum hall effectSuperconductivityCondensed matter
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SAMUELSSON, Martin Peter, SUKHORUKOV, Eugene, BUTTIKER, Markus. Orbital entanglement and violation of Bell inequalities in mesoscopic conductors. In: Physical Review Letters, 2003, vol. 91, n° 15, p. 157002. https://archive-ouverte.unige.ch/unige:4239

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Deposited on : 2009-11-30

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