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Optics Communications

Toward an experimental test for the finite-time wave function collapse

Raoni S. N. Moreira, Alyson J. A. Carvalho, Milrian S. Mendes, George Moreno, José Ferraz, Fernando Parisio, L. H. Acioli, D. Felinto

Published May 31, 2018• 1 citation
Publisher
DOI
10.1016/j.optcom.2018.05.052

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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text R. S. N. Moreira, A. J. A. Carvalho, J. Ferraz, F. Parisio, L. H. Acioli, and D. Felinto, "Experimental Test for the Finite-Time Wave Function Collapse," in Frontiers in Optics 2017, OSA Technical Digest (online) (Optica Publishing Group, 2017), paper JW4A.18. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

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Investigation of the collapse of quantum states using entangled photons

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We propose a scheme to investigate the time scale of wave-function collapse by using polarization-entangled photon pairs. The setup is similar to those employed to study quantum correlations, but in the present case, synchronization is essential at all stages. We find that it is possible to discriminate between the scenarios of instantaneous collapse and finite-time reduction via a large number of double measurements of polarization. The quantities to be recorded present distinct behaviors in each scenario, the deviations being small but distinguishable from pure statistical fluctuations. The connection between the presented formalism and the theory of weak measurements is discussed as well as the possible consequences for experimental tests of nonlocality.

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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text R. S. N. Moreira, A. J. A. Carvalho, J. Ferraz, F. Parisio, L. H. Acioli, and D. Felinto, "Experimental Test for the Finite-Time Wave Function Collapse," in Frontiers in Optics 2017, OSA Technical Digest (online) (Optica Publishing Group, 2017), paper JW4A.18. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
We propose a scheme to investigate the time scale of wave-function collapse by using polarization-entangled photon pairs. The setup is similar to those employed to study quantum correlations, but in the present case, synchronization is essential at all stages. We find that it is possible to discriminate between the scenarios of instantaneous collapse and finite-time reduction via a large number of double measurements of polarization. The quantities to be recorded present distinct behaviors in each scenario, the deviations being small but distinguishable from pure statistical fluctuations. The connection between the presented formalism and the theory of weak measurements is discussed as well as the possible consequences for experimental tests of nonlocality.