Optical control of atom-ion collisions using a Rydberg state
Optical control of atom-ion collisions using a Rydberg state
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DOI：
10.1088/1361-6455/ab7d24
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发表时间：
2019-01
期刊：
影响因子：
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通讯作者：
Limei Wang;M. Deiss;G. Raithel;J. Denschlag
中科院分区：
文献类型：
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作者：
Limei Wang;M. Deiss;G. Raithel;J. Denschlag
我们提出了一种控制电子基态超冷中性原子与俘获离子碰撞的方法。在碰撞过程中，中性原子被激光共振激发到低场寻求里德堡态，而里德堡态被离子排斥。当原子从离子反射时，它被去激发回到它的电子基态。分析了屏蔽效率与激光频率和功率、初始原子-离子碰撞能量和碰撞角度的函数关系。讨论了几种Rydberg水平的Na和Rb作为屏蔽的适宜性。屏蔽的有用应用包括抑制原子和离子之间不必要的化学反应，这是受控原子-离子相互作用的先决条件。
We present a method to control collisions between ultracold neutral atoms in the electronic ground state and trapped ions. During the collision, the neutral atom is resonantly excited by a laser to a low-field-seeking Rydberg state, which is repelled by the ion. As the atom is reflected from the ion, it is de-excited back into its electronic ground level. The efficiency of shielding is analyzed as a function of laser frequency and power, initial atom-ion collision energy, and collision angle. The suitability of several Rydberg levels of Na and Rb for shielding is discussed. Useful applications of shielding include the suppression of unwanted chemical reactions between atoms and ions, a prerequisite for controlled atom-ion interactions.