Density-density correlation of incoherent atoms with angular momentum released from an optical lattice

Density-density correlation of incoherent atoms with angular momentum released from an optical lattice
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非相干原子与光学晶格释放角动量的密度-密度相关性

DOI:
10.1103/physreva.77.063619
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发表时间:
2008-06
期刊:
Phys. Rev. A
影响因子:
--
通讯作者:
Hongwei Xiong
Hongwei Xiong
中科院分区:
其他
文献类型:
--
作者:
Baolong Lu;Shujuan Liu;Hongwei Xiong

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对于一系列具有从光学晶格释放的轨道角动量(或涡旋)的非相干和超冷原子,我们考虑这种自由膨胀的超冷气体的密度-密度相关性。由于量子化角动量产生的独特的相位结构,通过伴随普通圆形峰出现的新月形峰,表明相位结构在密度-密度关联的分布中起着重要的作用。特别地,发现新月形峰的取向与光学晶格中制备的原子的旋转方向相对应。
For a series of incoherent and ultracold atoms with an orbital angular momentum (or vortices) released from an optical lattice, we consider the density-density correlation of this freely expanding ultracold gases. Because of the unique phase structure originating from the quantized angular momentum, it is shown that the phase structure plays an important role in the distribution of the density-density correlation through the appearance of crescent-shaped peaks accompanying the ordinary round-shaped peaks. In particular, it is found that the orientation of the crescent-shaped peaks corresponds with the rotation direction of the atoms prepared in the optical lattices.
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