论文标题
量子速度限制基于鲍尔斯角的结合
Quantum speed limit based on the bound of Bures angle
论文作者
论文摘要
在本文中，我们根据修改后的角度研究了开放系统中量子速度限制时间的统一结合。该界限应用于阻尼的Jaynes-Cummings模型和Dephasing模型，并为这两个模型获得了分析量子速度限制时间。例如，选择具有白噪声的最大相干量子状态作为阻尼Jaynes-Cummings模型的初始状态。已经发现，与纯状态相比，非马克维亚和马尔可夫机制中的量子速度限制时间都可以减少。此外，对于dephasing模型，我们发现量子速度限制时间不仅与初始状态和非马克维亚性的连贯性有关，而且还取决于初始激发态的种群。
In this paper, we investigate the unified bound of quantum speed limit time in open systems based on the modified Bures angle. This bound is applied to the damped Jaynes-Cummings model and the dephasing model, and the analytical quantum speed limit time is obtained for both models. As an example, the maximum coherent qubit state with white noise is chosen as the initial states for the damped Jaynes-Cummings model. It is found that the quantum speed limit time in both the non-Markovian and the Markovian regimes can be decreased by the white noise compared with the pure state. In addition, for the dephasing model, we find that the quantum speed limit time is not only related to the coherence of initial state and non-Markovianity, but also dependent on the population of initial excited state.
