Scientific article
Open access

Closing the Detection Loophole in Bell Experiments Using Qudits

Published inPhysical review letters, vol. 104, no. 6
Publication date2010

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.

Citation (ISO format)
VÉRTESI, Tamás, PIRONIO, Stefano, BRUNNER, Nicolas. Closing the Detection Loophole in Bell Experiments Using Qudits. In: Physical review letters, 2010, vol. 104, n° 6. doi: 10.1103/PhysRevLett.104.060401
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Article (Published version)
ISSN of the journal0031-9007

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