Measurement master equation

Details Measurement master equation Measurement master equation

2006-02-17

arxiv.org/abs/quant-ph/0602153v1

Physics

Quantum Physics

14 pages and 8 figures, Optics Communications in press

Scientific paper

10.1016/j.optcom.2006.02.061

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.

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