Measurement-driven dynamics for a coherently-excited atom

Colin, Andrew J. T. and Barnett, Stephen M. and Jeffers, John (2012) Measurement-driven dynamics for a coherently-excited atom. Journal of Modern Optics, 59 (21). pp. 1803-1815. ISSN 1362-3044 (https://doi.org/10.1080/09500340.2012.744479)

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Abstract

The phenomenon of telegraphing in a measurement-driven two-level atom was noted in Cresser et al. [Cresser, J.D.; Barnett, S.M.; Jeffers, J.; Pegg, D.T. Opt. Commun. 2006, 264, 352361]. Here we introduce two quantitative measures of telegraphing: one based on the accumulated measurement record and one on the evolution of the quantum state. We use these to analyse the dynamics of the atom over a wide range of parameters. We find, in particular, that the measures provide broadly similar statistics when the measurements are frequent, but differ widely when measurements are sparse. This is in line with intuition, and demonstrates the utility of both measures.

ORCID iDs

Colin, Andrew J. T., Barnett, Stephen M. and Jeffers, John ORCID logoORCID: https://orcid.org/0000-0002-8573-1675;
  • Item type:Article
    ID code:42621
    Dates:
    Date
    Event
    2012
    Published
    22 November 2012
    Published Online
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:21 Jan 2013 10:01
    Last modified:11 Nov 2024 10:19
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/42621
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