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动态对称性与电磁感应透明量子信息处理

Dynamical Symmetry and Quantum Information Processing with Electromagnetically Induced Transparency

Xiong-Jun Liu, Hui Jing, Xin Liu, Mo-Lin Ge

摘要:

本文详细研究了具有电磁感应透明(EIT)的各种原子系统中有趣的动力学对称性及其应用。通过发现各种原子系统的对称李群,如由复杂的$m$能级$(m>3)$原子组成的单原子系综,以及由$three$能级原子组成的$two$原子系综乃至多原子系综等,人们可以得到暗态极化激元(DSP)的一般定义,然后得到这些不同系统的暗态。多能级系统和多原子系综系统的对称性与EIT系统的某些特征参数有关。此外,本文还讨论了一种利用量子化DSP理论在光或原子之间产生量子纠缠的可控方案,并通过验证绝热通过条件的有效性分析了该方案的鲁棒性。

英文摘要:

We study in detail the interesting dynamical symmetry and its applications in various atomic systems with electromagnetically induced transparency (EIT) in this paper. By discovering the symmetrical Lie group of various atomic systems, such as single-atomic-ensemble composed of complex $m$-level $(m>3)$ atoms, and $two$-atomic-ensemble and even multi-atomic-ensemble system composed of of $three$-level atoms etc., one can obtain the general definition of dark-state polaritons (DSPs), and then the dark-states of these different systems. The symmetrical properties of the multi-level system and multi-atomic-ensemble system are shown to be dependent on some characteristic parameters of the EIT system. Furthermore, a controllable scheme to generate quantum entanglement between lights or atoms via quantized DSPs theory is discussed and the robustness of this scheme is analyzed by confirming the validity of adiabatic passage conditions in this paper.

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。

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