论文标题
基于非核环境非马克维亚，量子渔民信息和量子相干性
Based-nonequilibrium-environment non-Markovianity, quantum Fisher information and quantum coherence
论文作者
论文摘要
在这项工作中，我们研究了Qubit在非平衡环境中量子的非马克维亚性，量子Fisher信息（QFI）和量子相干性，并获得了QFI和量子相干性及其关系的表达。我们还详细讨论了不同噪声参数对这些量子的影响。结果表明，非平衡环境的合适参数可以阻碍马尔可夫和非马克维亚区域中的QFI和量子相干性。另外，较小的记忆效应和跳跃速率越大，QFI和量子相干性就越大。较大的QFI自然对应于较大的量子相干性，这表明量子相干性可以扩大QFI并有效增强量子计量学。
In this work, we investigate the non-Markovianity, quantum Fisher information (QFI) and quantum coherence of a qubit in a nonequilibrium environment and have obtained the expressions of QFI and quantum coherence as well as their relationship. We have also discussed in detail the influences of the different noise parameters on these quantum sffects. The results show that the suitable parameters of the nonequilibrium environment can retard the QFI and quantum coherence in both Markovian and non-Markovian regions. In addition, the smaller memory effects and the larger the jumping rate, the greater the QFI and quantum coherence. And a larger QFI naturally corresponds to a larger quantum coherence, which indicates that the quantum coherence can enlarge the QFI and can effectively enhance the quantum metrology.
