{"title":"Antibunched Ν-photon bundles from dark states assisted by ac Stark shift","authors":"Chengdeng Gou, Jun Xu, Fei Wang, Xiangming Hu","doi":"10.1088/1367-2630/ad6633","DOIUrl":null,"url":null,"abstract":"\n 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.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"34 24","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Journal of Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/1367-2630/ad6633","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
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.
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。