Measurement master equation

James D. Cresser, Stephen M. Barnett, John Jeffers*, David T. Pegg

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)


    We derive a master equation describing the evolution of a quantum system subjected to a sequence of observations. These measurements occur randomly at a given rate and can be of a very general form. As an example, we analyse the effects of these measurements on the evolution of a two-level atom driven by an electromagnetic field. For the associated quantum trajectories we find Rabi oscillations, Zeno-effect type behaviour and random telegraph evolution spawned by mini quantum jumps as we change the rates and strengths of measurement.

    Original languageEnglish
    Pages (from-to)352-361
    Number of pages10
    JournalOptics Communications
    Issue number2
    Publication statusPublished - 15 Aug 2006


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