中性原子的电光纳米陷阱
Electro-Optical Nanotraps for Neutral Atoms
摘要：
提出了一类新的中性原子的纳米级电光阱。一个原型是由一个悬浮的、带电的碳纳米管和一个银纳米球二聚体组成的环形陷阱。一个照明激光场，蓝色失谐的原子共振频率，是强烈集中的等离子体激元诱导的二聚体，并产生附近的纳米结构表面的排斥势垒和一个大的粘性阻尼力，有利于陷阱加载。速度为每秒几米的原子可以通过两个光子的自发发射直接进入陷阱。
英文摘要：
We propose a new class of nanoscale electro-optical traps for neutral atoms. A prototype is the toroidal trap created by a suspended, charged carbon nanotube decorated with a silver nanosphere dimer. An illuminating laser field, blue detuned from an atomic resonance frequency, is strongly focused by plasmons induced in the dimer and generates both a repulsive potential barrier near the nanostructure surface and a large viscous damping force that facilitates trap loading. Atoms with velocities of several meters per second may be loaded directly into the trap via spontaneous emission of just two photons.
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