Abstract
In this study, we investigated the environmental influences exerted by the rf field on quantum coherence, quantum fidelity and dynamics in a two-level open system. Our results demonstrate that the rf field modulation enables the quantum system to maintain a higher degree of coherence with its initial state within a shorter evolution interval, thereby optimizing evolution speed of the system, suggesting its potential as an additional method for information encoding in quantum communication. By systematically adjusting the rf field modulation index, we observed a notable increase in quantum fidelity, which plays a crucial role in improving the accuracy and stability of quantum computing. Furthermore, the rf field’s environmental influence was found to dynamically alter the quantum speed limit (QSL), effectively modulating its tightness. These findings highlight the rf field’s capability to optimize the performance of quantum systems, offering new insights for applications in quantum communication, computing and sensing.