弱射频场中Rydberg原子的电磁感应透明

发布时间：2018-08-20 12:14

【摘要】：在铯原子室温蒸气池中研究了弱射频场中Rydberg原子阶梯型三能级系统的电磁感应透明(EIT)效应.铯原子基态6S_(1/2)、第一激发态6P_(3/2)和Rydberg 48D_(5/2)态形成阶梯型三能级系统,探测光共振作用于6S_(1/2)(F=4)→6P_(3/2)(F′=5)的跃迁,耦合光在Rydberg跃迁线6P_(3/2)(F′=5)→48D_(5/2)附近扫描,形成Rydberg原子EIT.当对铯原子施加一个80 MHz的弱射频电场时,48D_(5/2)Rydberg原子的EIT光谱发生Stark频移和分裂,同时产生由射频场调制Rydberg能级的偶数级边带,测量结果与Floquet理论模拟的结果相符合.同时,改变弱射频电场的频率研究了铯Rydberg能级的自电离效应对Rydberg原子Stark谱的影响,据此,我们提出将电极板置于铯原子蒸气池内的方案以减少自电离效应的影响.在弱射频Stark谱中,mj=5/2的Stark谱与mj=1/2,3/2的二级边带形成多个能级交叉,这些能级交叉点提供了一种基于原子的精确校准射频电场的新方法.
[Abstract]:The electromagnetically induced transparent (EIT) effect in a stepped three-level system of Rydberg atoms in a weak RF field has been investigated in a caesium vapor cell at room temperature. Caesium atom ground state 6S _ (1 / 2), first excited state 6P _ (3 / 2) and Rydberg 48D _ (5 / 2) state form a stepped three-level system, which detects the transition of 6S _ (1 / 2) (F ~ (4) P _ (3 / 2) (F _ (5) (F _ (5). The coupling light is scanned near the Rydberg transition line (6P _ (3 / 2) (F ~ (3 / 2) 48D _ (5) to form a Rydberg atom. When a weak RF electric field of 80 MHz is applied to the cesium atom, the EIT spectrum of the 48D5 / 2 Rydberg atom occurs Stark frequency shift and splitting, and the even sideband of the Rydberg energy level modulated by the RF field is produced. The measured results are in agreement with the results of the Floquet theory simulation. At the same time, the influence of autoionization effect of cesium Rydberg level on the Stark spectrum of Rydberg atom is studied by changing the frequency of weak RF electric field. Based on this, we propose a scheme of placing the electrode plate in the caesium vapor cell to reduce the influence of autoionization effect. In the weak RF Stark spectrum, the Stark spectrum of 5 / 2 and the second order sideband of 1 / 2 / 2 / 2 form multiple energy levels, which provide a new method to accurately calibrate the RF electric field based on atoms.
【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;
【基金】：国家重点基础研究发展计划(批准号:2012CB921603) 国家自然科学基金(批准号:11274209,61475090) 山西省留学基金(批准号:2014-009)资助的课题~~
【分类号】：O562

【相似文献】

相关期刊论文 前10条

1 ;Positions and Widths of Anticrossings for Potassium Rydberg Stark States[J];Communications in Theoretical Physics;2007年01期

2 周超;梁良;张玲;;Calculations of Rydberg energy levels for Ni XⅧusing the weakest bound electron potential model theory[J];Chinese Optics Letters;2007年08期

3 ;Ionization Potentials and Quantum Defects of 1s~2np~2p Rydberg States of Lithium Atom[J];Communications in Theoretical Physics;2008年09期

4 张现周;任振忠;贾光瑞;郭笑天;公伟贵;;Numerical exploration of population transfer of Rydberg-atom by single frequency-chirped laser pulse[J];Chinese Physics B;2008年12期

5 ;Semiclassical Calculation of Recurrence Spectra of Rydberg Hydrogen Atom Near a Metal Surface[J];Communications in Theoretical Physics;2009年02期

6 ;Model Potential Calculations of Oscillator Strength Spectra of Rydberg Li Atoms in External Fields[J];Communications in Theoretical Physics;2009年08期

7 康帅;陈昌永;;Statistics and Correlation Properties of Diamagnetic High Rydberg Hydrogen Atom[J];Communications in Theoretical Physics;2010年01期

8 刘文瑜,何兴虹,李白文;Quantum Defect and the Anticrossings of Diamagnetic Energy Levels of Rydberg Lithium Atom[J];Progress in Natural Science;1994年02期

9 刘鸿,李白文;Calculations of J-mixing Cross Sections of a Rydberg Rb Atom in the nD States[J];Progress in Natural Science;1994年03期

10 刘文瑜,李白文;Theoretical study of Rydberg atoms in strong fields[J];Progress in Natural Science;1995年01期

相关会议论文 前7条

1 张现周;伍素玲;任振忠;贾光瑞;公伟贵;;Population Transfer of Rydberg Lithium Atoms by Super-gauss Frequency-Chirped Laser Pulses[A];第十五届全国原子与分子物理学术会议论文摘要集[C];2009年

2 胡先权;;Calculation of the fine structure of the level in Rydberg state of lithium[A];第十三届全国原子与分子物理学术会议论文集[C];2006年

3 张国营;薛刘萍;张学龙;夏天;;硼原子高Rydberg态能级研究[A];第十三届全国原子与分子物理学术会议论文集[C];2006年

4 ;The fractal structure in the auto-ionization dynamics of Rydberg lithium atoms in a static electric field[A];第十五届全国原子与分子物理学术会议论文摘要集[C];2009年

5 ;Phase diagram of Rydberg atoms in a non-equilibrium optical lattice[A];第十五届全国量子光学学术报告会报告摘要集[C];2012年

6 李春燕;王婷婷;郑贤锋;陈e，

本文编号：2193578