Suppression of inelastic collisions between polar molecules with a repulsive shield
Suppression of inelastic collisions between polar molecules with a repulsive shield
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DOI：
10.1103/physrevlett.101.073201
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发表时间：
2008-08-15
影响因子：
8.6
通讯作者：
Buechler, H. P.
中科院分区：
文献类型：
--
作者：
Gorshkov, A. V.;Rabl, P.;Buechler, H. P.
我们提出并分析了一种技术，允许一个抑制非弹性碰撞，同时增强冷极性分子之间的弹性相互作用。其主要思想是用静电场和微波场的适当组合来消除主导偶极-偶极相互作用，使得剩余的货车德瓦尔斯型势形成三维排斥屏蔽。我们分析了与极性分子蒸发冷却有关的弹性和非弹性散射截面，并讨论了稳定晶体结构的产生的前景。
We propose and analyze a technique that allows one to suppress inelastic collisions and simultaneously enhance elastic interactions between cold polar molecules. The main idea is to cancel the leading dipole-dipole interaction with a suitable combination of static electric and microwave fields in such a way that the remaining van der Waals-type potential forms a three-dimensional repulsive shield. We analyze the elastic and inelastic scattering cross sections relevant for evaporative cooling of polar molecules and discuss the prospect for the creation of stable crystalline structures.