Antibunched Ν-photon bundles from dark states assisted by ac Stark shift

Chengdeng Gou, Jun Xu, Fei Wang, Xiangming Hu
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Abstract

In this paper, we propose an interesting scheme to generate antibunched N-photon bundles from dark states by using a single-atom cavity quantum electrodynamics (QED) system. The dispersive coupling between the atom and cavity introduces a Stark shift to one of the ground states, while the resonant coupling, along with a control field, forms a coherent N-excitation dark state assisted by the shift. Consequently, super-Rabi oscillation is established between the vacuum state and the N-excitation dark state when a probe field weakly couples to two ground states, enabling antibunched N-photon bundle emission within long-lived atomic coherence. As a byproduct, the generated high-efficiency single-photon source with a large mean photon number and high fidelity is of great value in quantum information processing.
由交流斯塔克偏移辅助的暗态反束Ν光子束
在本文中,我们提出了一种有趣的方案,利用单原子腔量子电动力学(QED)系统从暗态中产生反束N光子束。原子与空腔之间的色散耦合会给其中一个基态带来斯塔克偏移,而共振耦合与控制场则会在偏移的帮助下形成一个相干的 N-激发暗态。因此,当探针场弱耦合到两个基态时,真空态和 N-激发暗态之间就会产生超拉比振荡,从而在长寿命原子相干中实现反束 N 光子束发射。作为副产品,产生的高效率单光子源具有平均光子数大和保真度高的特点,在量子信息处理中具有重要价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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