论文标题
产生亚稳态氦原子的高度退化的费米气体
Production of a highly degenerate Fermi gas of metastable helium-3 atoms
论文作者
论文摘要
我们报告了在亚稳态氦原子的玻色纤维混合物的两个组件中，量子退化的实现，$^4 $ he*和$^3 $ he*。通过多普勒冷却和强迫蒸发以$^4 $ He*的价格实现退化，并同情冷却$^3 $ He*，$^4 $ He*。我们讨论了我们简化的实施，以及系统的高通用性。该技术能够产生退化的费米气体，最低温度降低$ t/t_f = 0.14（1）$，包括$ 2.5 \ times 10^4 $ $ $ $ $^3 $ he*原子。由于两种同位素的内部能量高，因此可以检测单原子，从而打开了大量实验中的可能性。
We report on the achievement of quantum degeneracy in both components of a Bose-Fermi mixture of metastable helium atoms, $^4$He* and $^3$He*. Degeneracy is achieved via Doppler cooling and forced evaporation for $^4$He*, and sympathetically cooling $^3$He* with $^4$He*. We discuss our simplified implementation, along with the high versatility of our system. This technique is able to produce a degenerate Fermi gas with a minimum reduced temperature of $T/T_F=0.14(1)$, consisting of $2.5 \times 10^4$ $^3$He* atoms. Due to the high internal energy of both isotopes single atom detection is possible, opening the possibility of a large number of experiments into Bose-Fermi mixtures.
