Adiabatic potentials for Rydberg atoms in a ponderomotive optical lattice
Adiabatic potentials for Rydberg atoms in a ponderomotive optical lattice
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有质动力光学晶格中里德伯原子的绝热势
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
G. Raithel
中科院分区：
文献类型：
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作者：
K. Younge;S. E. Anderson;G. Raithel
计算了一维有质动力光晶格中里德伯原子的绝热势和绝热波函数。考虑了简并高角动量里德堡态之间的所有晶格诱导耦合。为了深入了解底层物理，我们分析了晶格产生的有效电场和磁场的数值结果。在晶格势的拐点附近和足够低的主量子数（在所研究的情况下为n = 35），绝热能级结构类似于直流斯塔克效应，并且可以使用有效电场模型来模拟晶格诱导的微扰。在晶格场的节点和反节点附近，绝热能级结构表现出相邻的旋转和振动能级序列的组合。在这里，有质动力光学晶格和抗磁性问题之间的类比很好地解释了晶格引起的扰动的有效磁场。
We calculate the adiabatic potentials and adiabatic wavefunctions of Rydberg atoms in a one-dimensional ponderomotive optical lattice. All lattice-induced couplings between the degenerate high-angular-momentum Rydberg states are taken into account. To obtain insight into the underlying physics, we analyze the numerical results in terms of effective electric and magnetic fields produced by the lattice. Near the inflection points of the lattice potential and for sufficiently low principal quantum numbers (n≲35 in the cases studied), the adiabatic level structure resembles that of the dc Stark effect, and an effective electric-field model can be used to model the lattice-induced perturbation. Near the nodes and anti-nodes of the lattice field, the adiabatic level structure exhibits a combination of adjacent rotational and vibrational energy level sequences. Here, an analogy between the ponderomotive optical lattice and the diamagnetic problem works well to interpret the lattice-induced perturbation in terms of an effective magnetic field.