Light scattering from ultracold atomic gases in optical lattices at finite temperature
Light scattering from ultracold atomic gases in optical lattices at finite temperature
复制标题
有限温度下光学晶格中超冷原子气体的光散射
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
K. Burnett
中科院分区：
文献类型：
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作者：
James S. Douglas;K. Burnett
我们研究了有限温度下光学晶格中原子的光散射。我们研究了在非相互作用区由费米子散射的光，以及在超流和莫特绝缘区由玻色子散射的光。我们将以前的理论研究扩展到包括光学晶格的全能带结构。我们发现，激发原子脱离最低能带的光散射导致远离经典衍射峰的光散射增加，并且在很大程度上与温度无关。这种额外的光散射导致基于光子计数的温度测量效率较低。
We study light scattering from atoms in optical lattices at finite temperature. We examine the light scattered by fermions in the noninteracting regime and by bosons in the superfluid and Mott insulating regimes. We extend previous theoretical studies to include the full band structure of the optical lattice. We find that light scattering that excites atoms out of the lowest band leads to an increase in light scattering away from the classical diffraction peaks and is largely temperature independent. This additional light scattering leads to lower efficiency of temperature measurements based on photon counting.