论文标题
缓解戒指型原子陷阱中退化费米的加热
Mitigating Heating of Degenerate Fermions in a Ring-Dimple Atomic Trap
论文作者
论文摘要
我们报告了一个环形陷阱的延长几何形状对退化费米气体的颗粒损失加热的影响。当费米水平略大于凹痕深度和非分类“光晕”的深度时，相对于裸子的情况，总体加热速率会降低。我们发现，过度填充的凹坑的实验测量的加热速率与背景气体碰撞引起的孔诱导的加热模型非常吻合。对加热速率的这种抑制可能有助于对弱配对极限的费米子超流体进行实验研究，在长时间内达到和维持低温是必不可少的。
We report on the impact of the extended geometry of a ring-dimple trap on particle loss heating of a degenerate Fermi gas. When the Fermi level is slightly greater than the depth of the dimple and a non-degenerate "halo" is present, the overall heating rate is reduced relative to the case of a bare ring. We find that the experimentally measured heating rates for the overfilled dimple are in good agreement with a model of the hole-induced heating caused by background gas collisions. This suppression of the heating rate can be helpful for experimental studies of fermionic superfluids in the weak pairing limit, where achieving and maintaining low temperatures over long time scales is essential.
