Nonideal quantum detectors in Bayesian formalism

Details Nonideal quantum detectors in Bayesian formalism Nonideal quantum detectors in Bayesian formalism

2002-11-28

arxiv.org/abs/cond-mat/0211647v1

Phys. Rev. B 67, 235408, (2003).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages

Scientific paper

10.1103/PhysRevB.67.235408

The Bayesian formalism for a continuous measurement of solid-state qubits is derived for 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.

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