Document Type : Research
Author
University of Zanjan
Abstract
We introduce a trilayer permanent magnetic lattice for ultracold atoms which is created by two 2D arrays of square magnetic slabs plus a bias magnetic field. Three separate 2D arrays of magnetic microtraps located above the top layer of magnetic slabs, below the bottom layer and between them are produced. We provide analytical expressions for determining the location of non-zero magnetic field minima, as well as other physical quantities such as the absolute value of the magnetic field (B), curvatures, and trap frequencies at each minimum. The analytical expressions for B are in good agreement with the numerical results. Therefore, all the analytical expressions extracted from them are reliable. Some of the relevant physical quantities can be controlled using the bias magnetic field. Also, the trap frequencies between the magnetic layers in a trilayer lattice are higher compared to those in a bilayer lattice created by a single layer of magnets. Therefore, atom loss decreases and a better confinement is provided for them.
Keywords
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