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Entropic uncertainties for joint quantum measurements

Brougham, T. and Andersson, E. and Barnett, S.M. (2009) Entropic uncertainties for joint quantum measurements. Physical Review A, 80 (4). ISSN 1050-2947

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Abstract

We investigate the uncertainty associated with a joint quantum measurement of two spin components of a spin- 1 2 particle and quantify this in terms of entropy. We consider two entropic quantities, the joint entropy and the sum of the marginal entropies, and obtain lower bounds for each of these quantities. For the case of joint measurements where we measure each spin observable equally well, these lower bounds are tight.

Item type: Article
ID code: 18899
Keywords: entropic uncertainties, joint quantum measurements, Physics, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 20 May 2010 16:29
    Last modified: 05 Sep 2014 03:58
    URI: http://strathprints.strath.ac.uk/id/eprint/18899

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