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五能级M型原子的自发辐射相干控制

Coherent control of spontaneous emission from five-level M-type atom
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摘要 基于相干场控制和自发产生相干(SGC)效应,研究了五能级M型原子的自发辐射特性。对于存在3个相干场驱动的五能级原子,考虑由2个上能级到同一低能级的跃迁之间的SGC效应,采用迭代方法给出了自发辐射谱的解析解。利用缀饰态理论分别给出了强、弱耦合下的原子能级图,进而讨论了量子干涉效应与外场的Rabi频率对自发辐射的影响。研究发现,通过控制Rabi频率可以实现对暗线以及超窄谱线的调控。 The paper is focused on investigating the spontaneous emission properties of a five-level M-type atom based on coherent fields control and spontaneously generated coherence(SGC)effect.The study designed for the five-level atom driven by three coherent fields involves producing the analytical solution of spontaneous emission spectrum by considering the SGC effect between two transitions from two upper levels to a lower level and using iterative method;and providing the energy levels of atoms under strong and weak coupling using the theory and thereby discussing the influence of Rabi frequencies of external fields and quantum interference between the two decay channels on spontaneous emission.It follows that the adjustment of the Rabi frequencies could provide the control of the dark line and the ultra-narrow spectral line.
作者 任常愚 石宏新 赵景佳 尹向宝 Ren Changyu;Shi Hongxin;Zhao Jingjia;Yin Xiangbao(School of Science,Heilongjiang University of Science&Technology,Harbin 150022,China)
出处 《黑龙江科技大学学报》 CAS 2020年第1期117-120,共4页 Journal of Heilongjiang University of Science And Technology
基金 国家自然科学基金项目(61405057) 黑龙江省自然科学基金项目(F2018030)
关键词 M型原子 自发辐射 相干控制 缀饰态理论 M-type atom spontaneous emission coherent control dressed-state theory
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