Improved implementation of the Alicki–Van Ryn nonclassicality test for a single particle using<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi></mml:math>detectors

G. Brida, I. P. Degiovanni, Marco Genovese, Fabrizio Piacentini, Valentina Schettini, Nicolas Gisin, Sergey V. Polyakov, Alan L. Migdall

Abstract

Recently a test of nonclassicality for a single qubit was proposed [R. Alicki and N. Van Ryn, J. Phys, A: Math. Theor. 41, 062001 (2008)]. We present an optimized experimental realization of this test leading to a 46 standard deviation violation of classicality. This factor-of-5 improvement over our previous result was achieved by moving from the infrared to the visible where we can take advantage of higher-efficiency and lower-noise photon detectors.

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