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Measurement master equation

Cresser, James D. and Barnett, Stephen M. and Jeffers, John and Pegg, David T. (2006) Measurement master equation. Optics Communications, 264 (2). pp. 352-361. ISSN 0030-4018

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Abstract

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. (c) 2006 Elsevier B.V. All rights reserved.