产生6Li超冷强相关费米子超流体的实验装置

D. Hernandez-Rajkov, J. E. Padilla-Castillo, M. Mendoza-López, R. Col'in-Rodr'iguez, A. Gutiérrez-Valdés, S. A. Morales-Ram'irez, R. A. Guti'errez-Arenas, C. A. Gardea-Flores, R. Jáuregui-Renaud, J. A. Seman, F. J. Poveda-Cuevas, G. Roati
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引用次数: 1

摘要

我们提出了一种由$^6$Li原子的双组分自旋混合物组成的超冷强相关费米子超流体的实验装置。采用标准冷却技术,我们在单光束光学偶极子阱中实现了量子简并。我们的装置能够在低至$T/T_F = 0.1$的温度下产生自旋平衡样品,其中包含高达$5 \乘以10^4$原子对。我们可以通过调整粒子间的相互作用,使其接近于一个宽磁费什巴赫共振,从而获得不同的超流体状态。特别是,我们能够探索从分子玻色-爱因斯坦凝聚(BEC)到巴丁-库珀-施里弗(BCS)超流体的交叉。
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Experimental setup for the production of ultracold strongly correlated fermionic superfluids of 6Li
We present our experimental setup to produce ultracold strongly correlated fermionic superfluids made of a two-component spin-mixture of $^6$Li atoms. Employing standard cooling techniques, we achieve quantum degeneracy in a single-beam optical dipole trap. Our setup is capable of generating spin-balanced samples at temperatures as low as $T/T_F = 0.1$ containing up to $5 \times 10^4$ atomic pairs. We can access different superfluid regimes by tuning the interparticle interactions close to a broad magnetic Feshbach resonance. In particular, we are able to explore the crossover from the molecular Bose-Einstein condensate (BEC) to the Bardeen-Cooper-Schrieffer (BCS) superfluid regimes.
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