%0 Journal Article
%T Experimental high-dimensional two-photon entanglement and violations of generalized Bell inequalities
%A Dada, Adetunmise C.
%A Leach, Jonathan
%A Buller, Gerald S.
%A Padgett, Miles J.
%A Andersson, Erika
%J Nature Physics
%D 2011
%V 7
%N 9
%F Dada_etal2011
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=828), last updated on Sat, 12 May 2012 15:33:27 -0500
%X Quantum entanglement plays a vital role in many quantum-information and communication tasks. Entangled states of higher-dimensional systems are of great interest owing to the extended possibilities they provide. For example, they enable the realization of new types of quantum information scheme that can offer higher-information-density coding and greater resilience to errors than can be achieved with entangled two-dimensional systems (see ref. and references therein). Closing the detection loophole in Bell test experiments is also more experimentally feasible when higher-dimensional entangled systems are used. We have measured previously untested correlations between two photons to experimentally demonstrate high-dimensional entangled states. We obtain violations of Bell-type inequalities generalized to d-dimensional systems up to d=12. Furthermore, the violations are strong enough to indicate genuine 11-dimensional entanglement. Our experiments use photons entangled in orbital angular momentum, generated through spontaneous parametric down-conversion, and manipulated using computer-controlled holograms.
%K fromIPMRAS
%P 677-680