2000/08/31 by Alexander N. Korotkov · 1 citation
Physics and Astronomy · #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevb.63.115403
published as Phys.Rev.B 63, 115403 (2001) · 15 pages (including 9 figures)
arxiv created 2000/09/18 · arxiv updated 2009/11/30
We consider a two-level quantum system (qubit) which is continuously measured by a detector. The information provided by the detector is taken into account to describe the evolution during a particular realization of measurement process. We discuss the Bayesian formalism for such ``selective'' evolution of an individual qubit and apply it to several solid-state setups. In particular, we show how to suppress the qubit decoherence using continuous measurement and the feedback loop.