Eur. Phys. J. D 49, 161-165 (2008)
https://doi.org/10.1140/epjd/e2008-00155-6

Scattering effect of atoms through a Bose-Einstein condensate in an optical Lattice with a single defect

¹ Physical Department, Zhejiang Ocean University, Zhoushan 316000, P.R. China
² Department of Physics, and Center for Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
³ Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan, Shanxi 030006, P.R. China
⁴ Department of Physics, Hubei University, Wuhan 430062, P.R. China
⁵ Institute of Applied Physics and Computational Mathematics, P.O. Box 8009 (28), 100088 Beijing, P.R. China

Corresponding author: ^a cunxizhang@yahoo.com.cn

Received: 19 November 2007
Revised: 7 May 2008
Published online: 6 August 2008

Abstract

We study the transport of atoms across a localized Bose-Einstein condensate in an one-dimensional optical lattice with a single defect. Our analytical and numerical results show that the defect as well as the nonlinear parameter can control the transmission of the atoms beam and the position of total reflection caused by Fano resonance. These interesting features may be a very useful basis for devising tunable atom filters or a button.