Slow-light probe of Fermi pairing through an atom-molecule dark state
Slow-light probe of Fermi pairing through an atom-molecule dark state
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DOI：
10.1103/physreva.83.063605
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发表时间：
2011-02
影响因子：
2.9
通讯作者：
Hui Jing;Hui Jing;Y. Deng;Pierre Meystre
中科院分区：
文献类型：
--
作者：
Hui Jing;Hui Jing;Y. Deng;Pierre Meystre
我们考虑了量子简并原子气体通过分子暗态转变为基态双原子分子的双色光缔合。这个过程可以用一个{Lambda}能级方案来描述，该方案在形式上类似于原子系统中电磁诱导透明的情况，因此可以导致慢光传播。我们证明了光场的群速度明确地取决于原子是玻色子还是费米子，以及在费米子的情况下是否存在配对能隙，因此群速度的测量实现了对原子态和配对能隙的无损诊断。
We consider the two-color photoassociation of a quantum degenerate atomic gas into ground-state diatomic molecules via a molecular dark state. This process can be described in terms of a {Lambda} level scheme that is formally analogous to the situation in electromagnetically induced transparency in atomic systems and therefore can result in slow-light propagation. We show that the group velocity of the light field depends explicitly on whether the atoms are bosons or fermions, as well as on the existence or absence of a pairing gap in the case of fermions, so that the measurement of the group velocity realizes a nondestructive diagnosis of the atomic state and the pairing gap.