Rotary echo tests of coherence in Rydberg-atom excitation
Rotary echo tests of coherence in Rydberg-atom excitation
复制标题
里德伯原子激发相干性的旋转回波测试
DOI：
10.1088/1367-2630/11/4/043006
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发表时间：
2009
影响因子：
3.3
通讯作者：
G. Raithel
中科院分区：
文献类型：
--
作者：
K. Younge;G. Raithel
利用旋转回波研究了多体里德堡体系的激发动力学。在该方法中，在激发脉冲期间的可变时间处施加窄带激发场的相位反转。所得回波信号的可见性揭示了激励过程的相干程度。旋转回波测量的几个nD 5/2里德堡能级的铷与主量子数接近n=43，其中的静电里德伯原子相互作用的强度调制的福斯特共振。的里德伯原子相互作用，以减少回声的可见性，在最近的理论工作。证明了回波信号与光谱数据的等价性。
Rotary echoes are employed to study excitation dynamics in many-body Rydberg systems. In this method, a phase reversal of a narrow-band excitation field is applied at a variable time during the excitation pulse. The visibility of the resulting echo signal reveals the degree of coherence of the excitation process. Rotary echoes are measured for several nD5/2 Rydberg levels of rubidium with principal quantum numbers near n=43, where the strength of electrostatic Rydberg-atom interactions is modulated by a Förster resonance. The Rydberg-atom interactions are shown to diminish the echo visibility, in agreement with recent theoretical work. The equivalence of echo signals with spectroscopic data is demonstrated.