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Proceedings Paper

How quantum correlations enhance prediction of complementary measurements
Author(s): Radim Filip; Miroslav Gavenda; Jan Soubusta; Antonín Černoch; Miloslav Dušek
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Paper Abstract

If there are correlations between two qubits then the results of the measurement on one of them can help to predict measurement results on the other one. It is an interesting question what can be predicted about the results of two complementary projective measurements on the first qubit. To quantify these predictions the complementary knowledge excesses are used. A non-trivial constraint restricting them is derived. For any mixed state and for arbitrary measurements the knowledge excesses are bounded by a factor depending only on the maximal violation of Bell's inequalities. This result is experimentally verified on two-photon Werner states prepared by means of spontaneous parametric down-conversion.

Paper Details

Date Published: 6 December 2006
PDF: 6 pages
Proc. SPIE 5945, 14th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 594504 (6 December 2006); doi: 10.1117/12.638784
Show Author Affiliations
Radim Filip, Palacký Univ. (Czech Republic)
Miroslav Gavenda, Palacký Univ. (Czech Republic)
Jan Soubusta, Palacký Univ. (Czech Republic)
Joint Lab. of Optics of Palacký Univ. and Institute of Physics (Czech Republic)
Antonín Černoch, Palacký Univ. (Czech Republic)
Miloslav Dušek, Palacký Univ. (Czech Republic)

Published in SPIE Proceedings Vol. 5945:
14th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Anton Štrba; Dagmar Senderákova; Miroslav Hrabovský, Editor(s)

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