Phys. Rev. B 67, 235408 (2003) [11 pages]Nonideal quantum detectors in Bayesian formalismReceived 28 November 2002; revised 27 March 2003; published 10 June 2003 The Bayesian formalism for a continuous measurement of solid-state qubits is extended to a model which takes into account several factors of the detector nonideality. In particular, we consider additional classical output and backaction noises (with finite correlation), together with quantum-limited output and backaction noises, and take into account possible asymmetry of the detector coupling. The formalism is first derived for a single qubit and then generalized to the measurement of entangled qubits. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.67.235408
DOI:
10.1103/PhysRevB.67.235408
PACS:
73.23.-b, 03.67.Lx
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