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Closing the Detection Loophole in Bell Experiments Using Qudits

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Vértesi, Tamás
Published in Physical Review Letters. 2010, vol. 104, no. 6
Abstract We show that the detection efficiencies required for closing the detection loophole in Bell tests can be significantly lowered using quantum systems of dimension larger than two. We introduce a series of asymmetric Bell tests for which an efficiency arbitrarily close to 1/N can be tolerated using N-dimensional systems, and a symmetric Bell test for which the efficiency can be lowered down to 61.8% using four-dimensional systems. Experimental perspectives for our schemes look promising considering recent progress in atom-photon entanglement and in photon hyperentanglement.
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VÉRTESI, Tamás, PIRONIO, Stefano, BRUNNER, Nicolas. Closing the Detection Loophole in Bell Experiments Using Qudits. In: Physical Review Letters, 2010, vol. 104, n° 6. https://archive-ouverte.unige.ch/unige:36416

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Deposited on : 2014-05-06

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