Rectify the effect of measurement in survival probability of the ground vibrational state in diatomic molecule

Abstract

We have proposed a methodology that uses secondary electromagnetic field to overcome the effect of measurement on quantum dynamics. Our aim is also to find out some characteristics of the used secondary (recovery) field. We have applied the methodology to reduce the quantum Zeno effect (ZE), a consequence of repeated measurements in survival probability of ground vibrational state. As the model systems, we choose HBr[Formula: see text] and HI. The study is done with variation in frequency, pulse shape and other parameters of the secondary field. In all cases, suitable secondary field for which the Zeno effect is minimum is found near 0 [Formula: see text] 1 vibrational transition frequency. Suitable time gap between the measurement and the application of secondary field depends on the shape of the secondary field. When the secondary field is optimized, the recovery is more than 90% which almost nullify the Zeno effect.