The double dark resonance in a cold gas of Cs atoms and molecules.
The double dark resonance in a cold gas of Cs atoms and molecules.
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DOI：
10.1364/oe.16.015870
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发表时间：
2008-09
期刊：
影响因子：
3.8
通讯作者：
Zhifang Feng;Weidong Li;Liantuan Xiao;Suotang Jia
中科院分区：
文献类型：
--
作者：
Zhifang Feng;Weidong Li;Liantuan Xiao;Suotang Jia
本文从理论上研究了Cs原子和分子冷气体中的有效四能级受激拉曼绝热通过方案的性质，其中由于0（g）-（6S，6P（3/2））双阱结构，两个激发态之间存在隧道耦合.当隧穿耦合强度足够大时，在吸收谱中预测了双暗共振。双暗共振不仅揭示了超冷分子的形成，而且进一步证明了隧道效应是两个激发态分子之间的有效耦合机制。讨论了各种实验条件对这种现象的影响。
We theoretically investigated the properties of the effective four-level stimulated Raman adiabatic passage scheme in a cold gas of Cs atoms and molecules, where exists the tunnelling coupling between two excited molecular states due to the 0(g)- (6S,6P(3/2)) double well structure. The double dark resonance is predicted in the absorption spectrum when the tunnelling coupling strength is large enough. The double dark resonance not only reveals the formation of the ultra-cold molecules, but also provides further evidence for the tunnelling as one effective coupling mechanism between the two excited molecular states. The effect of the various experimental conditions on this phenomena has been discussed.