Robust calibration of an optical-lattice depth based on a phase shift
Robust calibration of an optical-lattice depth based on a phase shift
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DOI：
10.1103/physreva.97.043617
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发表时间：
2018-04-18
影响因子：
2.9
通讯作者：
Guery-Odelin, D.
中科院分区：
文献类型：
--
作者：
Cabrera-Gutierrez, C.;Michon, E.;Guery-Odelin, D.
我们报告的方法来校准的光学晶格的深度。它包括触发的intrasite偶极模式的云突然相移。相应的振荡运动是直接相关的带间频率上的大范围的晶格深度。值得注意的是，对于中等位移，在足够长的飞行时间后观察到的干涉图样的第零阶和第一阶的振荡由单一频率主导。该方法对原子-原子相互作用和叠加在光学晶格上的超弱外部限制的精确值具有鲁棒性。
We report on a method to calibrate the depth of an optical lattice. It consists of triggering the intrasite dipole mode of the cloud by a sudden phase shift. The corresponding oscillatory motion is directly related to the interband frequencies on a large range of lattice depths. Remarkably, for a moderate displacement, a single frequency dominates the oscillation of the zeroth and first orders of the interference pattern observed after a sufficiently long time of flight. The method is robust against atom-atom interactions and the exact value of the extra weak external confinement superimposed to the optical lattice.