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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 7 — Apr. 3, 2006
  • pp: 2539–2551

Practical scheme to realize 2D array of BECs on an atom chip: novel 2Dmagneto-optical and magnetic lattices

Min Yun and Jianping Yin  »View Author Affiliations

Optics Express, Vol. 14, Issue 7, pp. 2539-2551 (2006)

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An array of square current-carrying wires is proposed to construct a two-dimensional (2D) array of surface magneto-optical traps and Ioffe magnetic ones for realizing a 2D lattice of Bose-Einstein condensations (BECs) on an atom chip. Our study shows that when a vertical homogeneous bias magnetic field is only used, the wires will form a 2D array of quadrupole magnetic traps, which can be used to construct 2D lattice of surface magneto-optical micro-traps. While another horizontal homogeneous bias field is added simultaneously, the above 2D array of quadrupole micro-traps will be changed as an array of surface Ioffe micro-traps, which can be used to form a 2D magnetic lattice and then realize a 2D array of BECs. The dynamic loading process of cold 87Rb atoms from each micro-MOT into Ioffe micro-trap is studied by using Monte-Carlo simulations, and our results show that the scheme can be used to realize a natural and effective loading of cold atoms from 2D array of micro-MOTs into 2D array of Ioffe micro-traps, and the loading efficiency can be reach ~65%. Moreover, the positions of each BEC (or MOT) in 2D array of magnetic micro-traps can be controlled by adjusting the currents in the wires or by changing the additional vertical bias field.

© 2006 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.7010) Lasers and laser optics : Laser trapping

ToC Category:
Atomic and Molecular Physics

Original Manuscript: December 20, 2005
Revised Manuscript: March 21, 2006
Manuscript Accepted: March 22, 2006
Published: April 3, 2006

Min Yun and Jianping Yin, "Practical scheme to realize 2D array of BECs on an atom chip: novel 2D magneto-optical and magnetic lattices," Opt. Express 14, 2539-2551 (2006)

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