Universality of local weak interactions and its application for interferometric alignment.

Authors :: Dziewior J
Knips L
Farfurnik D
Senkalla K
Benshalom N
Efroni J
Meinecke J
Bar-Ad S
Weinfurter H
Vaidman L
Source :: Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2019 Feb 19; Vol. 116 (8), pp. 2881-2890. Date of Electronic Publication: 2019 Feb 05.
Publication Year :: 2019
Abstract: The modification of the effect of interactions of a particle as a function of its preselected and postselected states is analyzed theoretically and experimentally. The universality property of this modification in the case of local interactions of a spatially preselected and postselected particle has been found. It allowed us to define an operational approach for the characterization of the presence of a quantum particle in a particular place: the way it modifies the effect of local interactions. The experiment demonstrating this universality property provides an efficient interferometric alignment method, in which the position of the beam on a single detector throughout one phase scan yields all misalignment parameters.<br />Competing Interests: The authors declare no conflict of interest.<br /> (Copyright © 2019 the Author(s). Published by PNAS.)

Language :: English
ISSN :: 1091-6490
Volume :: 116
Issue :: 8
Database :: MEDLINE
Journal :: Proceedings of the National Academy of Sciences of the United States of America
Publication Type :: Academic Journal
Accession number :: 30723153
Full Text :: https://doi.org/10.1073/pnas.1812970116

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