Joint measurements of spin, operational locality, and uncertainty

E. Andersson, S.M. Barnett, A. Aspect

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Joint, or simultaneous, measurements of noncommuting observables are possible within quantum mechanics, if one accepts an increase in the variances of the jointly measured observables. In this paper, we discuss joint measurements of a spin-1/2 particle along any two directions. Starting from an operational locality principle, it is shown how to obtain a bound on how sharp the joint measurement can be. We give a direct interpretation of this bound in terms of an uncertainty relation.
LanguageEnglish
Pages042104-1-042104-8
JournalPhysical Review A
Volume72
Issue number4
DOIs
Publication statusPublished - 13 Oct 2005

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quantum mechanics

Keywords

  • quantum physics
  • quantum mechanics
  • measured observables
  • photonics
  • optics

Cite this

Andersson, E. ; Barnett, S.M. ; Aspect, A. / Joint measurements of spin, operational locality, and uncertainty. In: Physical Review A. 2005 ; Vol. 72, No. 4. pp. 042104-1-042104-8.
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Andersson, E, Barnett, SM & Aspect, A 2005, 'Joint measurements of spin, operational locality, and uncertainty' Physical Review A, vol. 72, no. 4, pp. 042104-1-042104-8. https://doi.org/10.1103/PhysRevA.72.042104

Joint measurements of spin, operational locality, and uncertainty. / Andersson, E.; Barnett, S.M.; Aspect, A.

In: Physical Review A, Vol. 72, No. 4, 13.10.2005, p. 042104-1-042104-8.

Research output: Contribution to journalArticle

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