Effect of information component of inaccurate continuous measurements of signal characteristics qubit-detectors with parametric transformation of energy

The model of an inaccurate continuous measurement of parametric energy conversion in the charge-phase qubit-detector of Rabi oscillation modes is presented. Apart from the inductive interaction of the qubit, the measuring circuit allows for the effect of continuous partial collapse of the qubit state with its inaccurate measurement. The present article considers the case of practically pure continuous inaccurate measurement of the signal qubit detector characteristics operating in a parametric energy conversion mode. To describe it we have used a previously developed [3] information approach to characterizing the dynamics of the afore-mentioned type of measurement based upon the the quantum Bayes theorem. We have also proposed a principle of invariance for a classical trajectory of the detector in the course of the continuous inaccurate measurement in relation to the mode of qubit quantomechanic description [4].