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Journal of Suzhou University

Novel atomic magnetic lattices with arrays of Z-shaped wires

Yun Min, Yin Jian-Ping

Published Jan 1, 2004• 0 citations
OpenAlex

Abstract

Two novel arrays of magnetic surface microtraps to construct 1D and 2D atomic magnetic lattices are proposed. The spatial distributions of the magnetic fields from current-carrying wires and their gradients and curvatures are calculated, respectively. Our study shows that these arrays of magnetic surface microtraps with a minimal non-zero B-value at each well center can be used to form 1D and 2D atomic magnetic lattices, or to realize arrays of BEC, even to prepare photonic crystals.

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Two novel arrays of magnetic surface microtraps to construct 1D and 2D atomic magnetic lattices are proposed. The spatial distributions of the magnetic fields from current-carrying wires and their gradients and curvatures are calculated, respectively. Our study shows that these arrays of magnetic surface microtraps with a minimal non-zero B-value at each well center can be used to form 1D and 2D atomic magnetic lattices, or to realize arrays of BEC, even to prepare photonic crystals.
We propose one-dimensional (1D) and two-dimensional (2D) arrays of magnetic surface microtraps for cold alkali atoms using some arrays of current-carrying wires and we calculate the spatial distributions of magnetic fields from the 1D and 2D arrays of current-carrying wires. The field gradients and curvatures from a single magnetic microtrap are analysed, and some interesting and periodic magnetic-well microstructures are found. The result shows that a magnetic-field gradient greater than 2.4 × 10 5 G/cm and a field curvature greater than 4.05 × 10 8 G/cm 2 can be generated in our array of magnetic microtraps, which can be used to realize the 1D and 2D arrays of Bose-Einstein condensations (or 1D and 2D arrays of Bose clusters) by rf-induced evaporative cooling, and then to form 1D and 2D atomic magnetic lattices, even to prepare 1D and 2D photonic crystals.
We propose a novel scheme to construct one-, two- or three-dimensional (1D, 2D or 3D) atomic magnetic lattices by using various arrays of microscopic magnetic traps, which are composed of some arrays of current-carrying wires. The magnetic field distributions from 1D, 2D and 3D arrays of the current-carrying wires are calculated, and some interesting and periodic magnetic microstructures are found. Our study shows that these magnetic lattices may be used to prepare 1D, 2D or 3D photonic crystals and so on.
A single microscopic magnetic trap for neutral atoms using planar current-carrying wires was proposed and studied theoretically by Weinstein et al.In this paper,we propose three structures of composite current-carrying wires to provide 1D,2D and 3D arrays of microscopic magnetic traps for cold alkali atoms.The spatial distributions of magnetic fields generated by these structures are calculated and the field gradient and curvature in each single microtrap are analysed.Our study shows that arrays of microscopic magnetic traps can be used to provide 1D,2D or 3D atomic magnetic lattices,and even to realize 1D,2D and 3D arrays of magneto-optical traps,and so on.
A single microscopic magnetic trap for neutral atoms using planar current-carrying wires was proposed and studied theoretically by Weinstein et al . In this paper, we propose three structures of composite current-carrying wires to provide 1D, 2D and 3D arrays of microscopic magnetic traps for cold alkali atoms. The spatial distributions of magnetic fields generated by these structures are calculated and the field gradient and curvature in each single microtrap are analysed. Our study shows that arrays of microscopic magnetic traps can be used to provide 1D, 2D or 3D atomic magnetic lattices and even to realize 1D, 2D and 3D arrays of magneto-optical traps and so on.
We propose a novel array of controllable double-well magnetic microtraps for cold atoms by using an array of square current-carrying wires and two additional bias magnetic fields. Arrays of double layer magnetooptical traps (MOTs) and Ioffe traps can be constructed by using same wire configurations and different currents and bias fields. Furthermore, the array of double-well magnetic microtraps can be continuously evolved as an array of single-well magnetic microtraps by reducing the currents in the wires. Our study shows that our scheme can be used to realize a controllable double-layer magnetic lattice with cold atoms, to form array of Bose-Einstein condensations (BECs), or to study atom interference, and so on.
Abstract We propose two novel schemes for guiding cold, neutral atoms using static magnetic fields generated by several cylindrical arrays of current‐carrying wires or a few different‐shaped (V‐, or U‐shaped, etc.) current‐carrying conductors, and calculate the corresponding magnetic‐field contours and their trapping potentials. Our study shows that some guiding schemes can be used to form an atomic funnel, or an atomic beam‐splitter, or even construct an atomic interferometer, and some guiding schemes can be used to realize a single‐mode wave guide of ultracold atoms (or coherent matter waves, BEC) under certain conditions. We also propose a few new schemes to microscopically trap neutral atoms by using various planar arrays of current‐carrying wires and calculate the spatial distribution of the magnetic fields. Our research shows that these microtrap arrays can be used to form 1D, 2D or 3D atomic magnetic lattices, and then to prepare 1D, 2D or 3D photonic crystals, even to realize a 1D, 2D or 3D array of magnetically‐trapped BECs or Bose Clusters.