Mapping of time-dependent electron orbital alignment

Mapping of time-dependent electron orbital alignment
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随时间变化的电子轨道排列图

DOI:
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发表时间:
2006
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影响因子:
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通讯作者:
S. Leone
S. Leone
中科院分区:
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文献类型:
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作者:
S. Gilb;E. A. Torres;S. Leone

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利用时间分辨的光电子成像技术,在氪中的里德堡旋转波包的递归过程中观察到了随时间变化的电子轨道排列。利用三光子飞秒脉冲激发两个ac-Stark位移态(5d′[5/2]3和8d[1/2]1),产生了含时取向.使用角动量代数的测量的光电子分布的一个简单的分析表明,所观察到的电子轨道排列的周期性变化是伴随着相关的贝尔态的时间依赖性的变化。这些Bell态描述了激发态电子与离子核的纠缠系统。因此,这些实验提出了一个相对简单的激发方案,创造一个无消相干纠缠叠加。
Using time-resolved photoelectron imaging, a time-dependent electron orbital alignment is observed during the recurrences of a Rydberg rotational wave packet in krypton. The time-dependent alignment is created via excitation of two ac-Stark shifted states (5d′[5/2]3 and 8d[1/2]1) using a three-photon femtosecond pulse excitation. A straightforward analysis of the measured photoelectron distributions using angular momentum algebra shows that the observed periodic change in the electron orbital alignment is accompanied by a time-dependent change of the associated Bell states. These Bell states describe the entangled system of excited electron and ionic core. Hence, these experiments present a relatively simple excitation scheme for creating a decoherence-free entangled superposition.