arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1505.04490quant-ph
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电磁感应纠缠

Electromagnetically Induced Entanglement

Xihua Yang, Min Xiao

摘要:

在强抽运场和弱探测场驱动下,在传统的Lambda型三能级原子系统中出现了一种新的量子现象-电磁诱导纠缠.泵浦场和探测场之间的纠缠可以通过两个较低能级之间的低相干衰减率、高泵浦场强度和原子系综的大光学深度来实现。物理起源是泵浦场和探测场产生的较低的双重态之间的量子相干性,类似于众所周知的电磁感应透明。该方法可以在仅利用相干光场的情况下,在亮光束间产生非简并窄带连续变量纠缠,在实际的量子信息处理中有着潜在的和广泛的应用。

英文摘要:

We present a novel quantum phenomenon named electromagnetically induced entanglement in the conventional Lambda-type three-level atomic system driven by a strong pump field and a relatively weak probe field. Nearly perfect entanglement between the pump and probe fields can be achieved with a low coherence decay rate between the two lower levels, high pump-field intensity, and large optical depth of the atomic ensemble. The physical origin is quantum coherence between the lower doublet produced by the pump and probe fields, similar to the well-known electromagnetically induced transparency. This method would greatly facilitate the generation of nondegenerate narrow-band continuous-variable entanglement between bright light beams by using only coherent laser fields, and may find potential and broad applications in realistic quantum information processing.

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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