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arXiv 1106.0199cond-mat.quant-gas
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用1064 $nm$光偶极阱激光器研究光诱导矢量势中的玻色-爱因斯坦凝聚体

Bose-Einstein Condensate in a light-induced vector potential using the 1064 $nm$ optical dipole trap lasers

Zhengkun Fu, Pengjun Wang, Shijie Chai, Lianghui Huang, Jing Zhang

摘要:

利用两束交叉的1064 $nm$光偶极阱激光器作为喇曼光束,对F=2超精细基态的玻色-爱因斯坦凝聚$^{87}$ Rb建立了有效的矢量规范势.由于与电子激发态的单光子共振的远失谐,自发发射大大减少,同时仍然可以实现中等强度的拉曼耦合。通过将均匀偏置磁场斜升到共振态,将拉曼耦合远失谐处的原子随机加载到缀饰态,并研究了不同能量的缀饰态。这个实验很容易扩展到从有效矢势的空间或时间依赖性产生合成磁场或电场。

英文摘要:

We present a simple experiment of creating an effective vector gauge potential for Bose-Einstein condensed $^{87}$Rb in the F=2 hyperfine ground state using two crossed 1064 $nm$ optical dipole trap lasers as the Raman beams. Due to the far-detuning from the single-photon resonance with the electronically excited state, the spontaneous emission is strongly reduced, at the same time, the moderate strength of the Raman coupling still can be achieved. The atoms at the far detuning of the Raman coupling are loaded adiabatically into the dressed states by ramping the homogeneous bias magnetic field to resonance and the different energy dressed states are studied. This experiment is easily extended to produce synthetic magnetic or electric field from a spatial or time dependence of the effective vector potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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