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arXiv:0804.1646 · Optics Express

Experimental test of nonclassicality for a single particle

G. Brida, Ivo Pietro Degiovanni, Marco Genovese, Valentina Schettini, Sergey Vladimirovich Polyakov, Alan L. Migdall

Published Jul 22, 2008• 32 citations
arXivHTMLPDF

Abstract

In a recent paper [R. Alicki and N. Van Ryn, J. Phys. A: Math. Theor., 41, 062001 (2008)] a test of nonclassicality for a single qubit was proposed. Here, we discuss the class of hidden variables theories to which this test applies and present an experimental realization.
DOI
10.1364/oe.16.011750

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Nonclassicality was introduced to examine if experimental observations can be explained with a classical theory. Although the formal definition of nonclassicality is known for several decades, there has been a lack of simple and complete criteria to check nonclassicality. In this work, some criteria are compared. Then, so-called nonclassicality quasiprobabilities are introduced, which allow a full examination of nonclassicality for any quantum state. Finally, some issues of the relation between nonclassicality and entanglement are discussed. All concepts are illustrated with experimental data.
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