Abstract

We investigated the influence of the quantum-jump-based feedback on the behaviors of the three-level Rydberg system by making use of relative entropy coherence and the square root of quantum Jensen–Shannon divergence. It is shown that quantum relative entropy coherence and quantum Jensen–Shannon divergence are enhanced by particular quantum-jump-based feedbacks and increase with the enhancement of the detuning $ \delta $. We also explored the behavior of the entropic uncertainty relationship, and lower uncertainty bounds are obtained with quantum-jump-based feedbacks. The effect of different detunings $ \delta $ on the entropic uncertainty relationship is also discussed, and it is found that the uncertainty bound decreases when the detuning $ \delta $ increases.

© 2019 Optical Society of America

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