Phys. Rev. B 63, 115403 (2001) [15 pages]Selective quantum evolution of a qubit state due to continuous measurementReceived 17 September 2000; published 23 February 2001 We consider a two-level quantum system (qubit) that 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 the 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 qubit decoherence using continuous measurement and a feedback loop. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.63.115403
DOI:
10.1103/PhysRevB.63.115403
PACS:
73.23.-b, 03.65.Ta
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