A microchip ring trap for cold atoms
A microchip ring trap for cold atoms
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DOI：
10.1088/0953-4075/38/18/001
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
M. B. Crookston;P. Baker;M. P. Robinson
中科院分区：
文献类型：
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作者：
M. B. Crookston;P. Baker;M. P. Robinson
我们描述了一种方法，以创建一个圆形的德布罗意波的微芯片上的磁波导。该波导是一个二维磁极小值，用于捕获具有磁偶极矩的原子或分子的弱场寻求态。它完全是由在多层芯片上光刻图案化的导线中的电流产生的。我们描述的几何形状和随时间变化的电流的导线，并表明，它是可能的包装波导在一个完整的圆，由于引线或导线交叉的扰动最小。这种最大面积的几何形状适合于旋转传感与原子干涉通过Sagnac效应使用冷的热原子和分子或玻色凝聚系统。
We describe a method to create a circular magnetic waveguide for deBroglie waves on a microchip. The guide is a two-dimensional magnetic minimum for trapping weak-field seeking states of atoms or molecules with a magnetic dipole moment. It is created completely by electric currents in wires that are lithographically patterned on a multi-level chip. We describe the geometry and time-dependent currents of the wires and show that it is possible to wrap the waveguide in a complete circle with minimal perturbations due to the leads or wire crossings. This maximal area geometry is suited for rotation sensing with atom interferometry via the Sagnac effect using either cold thermal atoms and molecules or Bose-condensed systems.