超冷铯Rydberg原子的Autler-Townes分裂

发布时间：2018-05-31 01:46

  本文选题：Rydberg原子 + Autler-Townes分裂　； 参考：《物理学报》2017年21期

【摘要】：主要研究超冷铯Rydberg原子阶梯型三能级系统的Autler-Townes(A-T)分裂.铯原子基态6S_(1/2)、第一激发态6P_(3/2)和Rydberg态形成阶梯型三能级系统,强耦合光共振作用于6P_(3/2)(F′=5)→34D_(5/2)的跃迁,探测光由偏振光谱锁定在6S_(1/2)(F=4)→6P_(3/2)(F′=5)的跃迁,并由双通的声光调制器在其共振跃迁附近扫描,形成的Rydberg原子A-T分裂谱由单光子计数器探测.A-T光谱的双峰间距与耦合光的拉比频率成正比,实验结果与理论计算在耦合光拉比频率Ω_c2π×9 MHz时符合得很好,在拉比频率Ω_c2π×9 MHz时,测量的A-T分裂比理论计算值小13%.产生偏差的主要原因是由于较大的耦合光拉比频率Ω_c增加了激发的Rydberg原子数,Rydberg原子间的相互作用产生了较大的退相干率所致.
[Abstract]:We mainly study the Autler-Townes (A-T) splitting of the supercooled cesium Rydberg atom staircase three level system. The ground state 6S_ (1/2), the first excited state 6P_ (3/2) and the Rydberg state form a ladder type three level system. The strong coupling optical resonance acts on the transition of 6P_ (3/2) (F '=5), and the polarization spectrum is locked in the polarization spectrum. The transition of (F '=5) is scanned by a two pass acousto-optic modulator near its resonant transition, and the Rydberg atom A-T splitting spectrum of the Rydberg atom is formed by the single photon counter to detect the.A-T spectrum of the.A-T spectrum, which is proportional to the Rabi frequency of the coupled light. The experimental results are in good agreement with the theoretical calculation when the coupling light pull ratio frequency omega _c2 PI x 9 MHz is in good agreement with the Rabi frequency. When the rate of Omega _c2 PI x 9 MHz, the main reason for the deviation of the measured A-T splitting than the theoretical calculated value 13%. is that the larger coupling optical Rabi frequency omega _c increases the number of the excited Rydberg atoms, and the interaction between the Rydberg atoms produces a larger decoherence rate.
【作者单位】： 量子光学与光量子器件国家重点实验室山西大学激光光谱研究所;山西大学极端光学协同创新中心;
【基金】：国家重点研发计划(批准号:2017YFA0304203) 国家自然科学基金(批准号:11274209,61475090,61775124),国家自然科学基金重点项目(批准号:11434007) 长江学者和创新团队发展计划(批准号:IRT13076) 山西省留学基金(批准号:2014-009)资助的课题~~
【分类号】：O562

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