Experimental weak measurement of two non-commuting observables

The fact that not all quantum observables are jointly measurable is one of the major differences between quantum and classical theory. In the former, non-commuting observables can only be simultaneously measured with limited precision. We report on an experimental implementation of such a simultaneo...

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Bibliographic Details
Main Authors: Pütz, Gilles, Barnea, Tomer, Gisin, Nicolas, Martin, Anthony
Format: Report
Language:unknown
Published: arXiv 2016
Subjects:
Quantum Physics quant-ph
FOS Physical sciences
The Pointers
Online Access:https://dx.doi.org/10.48550/arxiv.1610.04464
https://arxiv.org/abs/1610.04464
id ftdatacite:10.48550/arxiv.1610.04464
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spelling ftdatacite:10.48550/arxiv.1610.04464 2023-05-15T18:32:39+02:00 Experimental weak measurement of two non-commuting observables Pütz, Gilles Barnea, Tomer Gisin, Nicolas Martin, Anthony 2016 https://dx.doi.org/10.48550/arxiv.1610.04464 https://arxiv.org/abs/1610.04464 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Quantum Physics quant-ph FOS Physical sciences Preprint Article article CreativeWork 2016 ftdatacite https://doi.org/10.48550/arxiv.1610.04464 2022-04-01T11:08:42Z The fact that not all quantum observables are jointly measurable is one of the major differences between quantum and classical theory. In the former, non-commuting observables can only be simultaneously measured with limited precision. We report on an experimental implementation of such a simultaneous measurement of two non-commuting observables based on the framework of weak von Neumann measurements. We use a photonic setup where the polarisation degree of freedom acts as the system and the two components of the transversal position correspond to the pointers of the measurement apparatuses. In addition, the theory shows that these weak measurements demonstrate a counter-intuitive non-monotonicity: weaker measurements can potentially reveal more information than stronger ones. : 9 pages, 4 figures, comments welcome Report The Pointers DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Quantum Physics quant-ph
FOS Physical sciences
spellingShingle Quantum Physics quant-ph
FOS Physical sciences
Pütz, Gilles
Barnea, Tomer
Gisin, Nicolas
Martin, Anthony
Experimental weak measurement of two non-commuting observables
topic_facet Quantum Physics quant-ph
FOS Physical sciences
description The fact that not all quantum observables are jointly measurable is one of the major differences between quantum and classical theory. In the former, non-commuting observables can only be simultaneously measured with limited precision. We report on an experimental implementation of such a simultaneous measurement of two non-commuting observables based on the framework of weak von Neumann measurements. We use a photonic setup where the polarisation degree of freedom acts as the system and the two components of the transversal position correspond to the pointers of the measurement apparatuses. In addition, the theory shows that these weak measurements demonstrate a counter-intuitive non-monotonicity: weaker measurements can potentially reveal more information than stronger ones. : 9 pages, 4 figures, comments welcome
format Report
author Pütz, Gilles
Barnea, Tomer
Gisin, Nicolas
Martin, Anthony
author_facet Pütz, Gilles
Barnea, Tomer
Gisin, Nicolas
Martin, Anthony
author_sort Pütz, Gilles
title Experimental weak measurement of two non-commuting observables
title_short Experimental weak measurement of two non-commuting observables
title_full Experimental weak measurement of two non-commuting observables
title_fullStr Experimental weak measurement of two non-commuting observables
title_full_unstemmed Experimental weak measurement of two non-commuting observables
title_sort experimental weak measurement of two non-commuting observables
publisher arXiv
publishDate 2016
url https://dx.doi.org/10.48550/arxiv.1610.04464
https://arxiv.org/abs/1610.04464
genre The Pointers
genre_facet The Pointers
op_rights arXiv.org perpetual, non-exclusive license
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
op_doi https://doi.org/10.48550/arxiv.1610.04464
_version_ 1766216857779437568

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