论文标题
保利在退化的费米气体中阻止刺激的发射
Pauli blocking of stimulated emission in a degenerate Fermi gas
论文作者
论文摘要
量子力学中的Pauli排除原则对物质结构和费米之间的相互作用有深远的影响。大约30年前，预测保利排除原则可能会导致自发发射的抑制，而最近几项实验才证实了这一现象。在这里，我们报告说，这种所谓的Pauli封锁不仅会影响不一致的过程，而且更普遍地是连贯驱动的系统。它表现为在$^3 \ mathrm {he} $的光学捕获的费米气体中，在倍增的Fermi气体中，它是一个引人入胜的子多普勒。通过积极地将原子从激发状态中抽出，我们打破了激发的连贯性并解除了狭窄效果，从而证实了Pauli Blockade对过渡轮廓的影响。对量子统计数据与连贯驾驶之间相互作用的新见解是涉及费米子系统的未来应用的有希望的发展。
The Pauli exclusion principle in quantum mechanics has a profound influence on the structure of matter and on interactions between fermions. Almost 30 years ago it was predicted that the Pauli exclusion principle could lead to a suppression of spontaneous emission, and only recently several experiments confirmed this phenomenon. Here we report that this so-called Pauli blockade not only affects incoherent processes but also, more generally, coherently driven systems. It manifests itself as an intriguing sub-Doppler narrowing of a doubly-forbidden transition profile in an optically trapped Fermi gas of $^3\mathrm{He}$. By actively pumping atoms out of the excited state, we break the coherence of the excitation and lift the narrowing effect, confirming the influence of Pauli blockade on the transition profile. This new insight into the interplay between quantum statistics and coherent driving is a promising development for future applications involving fermionic systems.
