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Selective quantum evolution of a qubit state due to continuous measurement

Alexander N. Korotkov
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Abstract

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.

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Alexander N. Korotkov. 2000-09-18. Selective quantum evolution of a qubit state due to continuous measurement. https://doi.org/10.1103/physrevb.63.115403

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