In order to effectively overcome quantum decoherence,a method to protect quantum coherence by introducing additional noise was proposed,and the Jaynes-Cummings(J-C)model was coupled to an external non-Markovian bosonic bath.By employing the dressed-state approach to solve this model and numerically av-eraging over many random trajectories under stochastic couplings,the density matrix of the system was calcu-lated.The numerical results indicate that random noise in the atom-cavity coupling can effectively suppress re-laxation and decoherence effects caused by cavity leakage.Furthermore,the memory time of noise plays an important role in protecting quantum coherence.The results will open up a new path for utilizing noise to pro-tect quantum coherence.
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