arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1608.03365quant-ph
收藏

匀加速纠缠原子的时间响应函数

Finite-time response function of uniformly accelerated entangled atoms

C. D. Rodríguez-Camargo, N. F. Svaiter, G. Menezes

摘要:

研究了Minkowski真空中匀加速二能级原子与无质量标量场弱耦合系统从基态到最终纠缠态的跃迁几率.使用含时微扰理论,我们评估的有限时间响应函数,我们确定的相互影响的原子通过量子场作为一个相干剂在每个响应函数条款。原子所感知的相关热谱在有限的时间间隔内被发现。通过考虑我们设置的特定参数的修改,我们还分析了原子-场耦合切换的平滑性对跃迁几率的影响。此外,我们还研究了对称最大纠缠态在不同加速度下的平均寿命。我们的计算表明,平滑切换比突然切换更有效地减少纠缠态的衰变。我们的结果可能的相关性进行了讨论。

英文摘要:

We examine the transition probability from the ground state to a final entangled state of a system of uniformly accelerated two-level atoms weakly coupled with a massless scalar field in Minkowski vacuum. Using time-dependent perturbation theory we evaluate the finite-time response function and we identify the mutual influence of atoms via the quantum field as a coherence agent in each response function terms. The associated thermal spectrum perceived by the atoms is found for a finite time interval. By considering modifications of specific parameters of our setup, we also analyze how the transition probabilities are affected by the smoothness of the switching of the atom-field coupling. In addition, we study the mean life of the symmetric maximally entangled state for different accelerations. Our calculations reveal that smooth switching is more efficient than sudden switching concerning the reduction of the decay of the entangled state. The possible relevance of our results is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑