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      The uncertainty principle determines the non-locality of quantum mechanics

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          Abstract

          Two central concepts of quantum mechanics are Heisenberg's uncertainty principle, and a subtle form of non-locality that Einstein famously called ``spooky action at a distance''. These two fundamental features have thus far been distinct concepts. Here we show that they are inextricably and quantitatively linked. Quantum mechanics cannot be more non-local with measurements that respect the uncertainty principle. In fact, the link between uncertainty and non-locality holds for all physical theories.More specifically, the degree of non-locality of any theory is determined by two factors -- the strength of the uncertainty principle, and the strength of a property called ``steering'', which determines which states can be prepared at one location given a measurement at another.

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          �ber den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik

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            �ber das Paulische �quivalenzverbot

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              Quantum nonlocality as an axiom

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                Author and article information

                Journal
                14 April 2010
                2010-11-19
                Article
                10.1126/science.1192065
                1004.2507
                b826aa81-415a-4971-a5b3-24a91653488c

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
                Custom metadata
                Science 19 November 2010: Vol. 330 no. 6007 pp. 1072-1074
                28 pages, 6 figures
                quant-ph

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