摘要
The ground states of the ultracold spin-1 atoms superlattice in a weak magnetic field are obtained. It is shown trapped in a deep one-dimensional double-weU optical that the ground-state diagrams of the reduced double- well model are remarkably different for the antiferromagnetic and ferromagnetic condensates. The transition between the singlet state and nematic state is observed for the antiferromagnetic interaction atoms, which can be realized by modulating the tunneling parameter or the quadratic Zeeman energy. An experiment to distinguish the different spin states is suggested.
基金
Supported by the National Natural Science Foundation of China under Grant No.11274095
the Program of Innovation Scientists and Technicians Troop Construction Projects in Henan Province under Grant No.114100510021
the Natural Science Basic Research Plan in Henan Province of China under Grant No.2011B140010
the Innovative Research Team(in Science and Technology)in University of Henan Province under Grant No.2010IRTSTHN002
