自旋玻色-爱因斯坦凝聚体中的无核涡旋形成

Coreless vortex formation in a spinor Bose-Einstein condensate.

作者信息

Leanhardt A E, Shin Y, Kielpinski D, Pritchard D E, Ketterle W

机构信息

Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

出版信息

Phys Rev Lett. 2003 Apr 11;90(14):140403. doi: 10.1103/PhysRevLett.90.140403. Epub 2003 Apr 9.

DOI:10.1103/PhysRevLett.90.140403

PMID:12731900

Abstract

Coreless vortices were phase imprinted in a spinor Bose-Einstein condensate. The three-component order parameter of F=1 sodium condensates held in a Ioffe-Pritchard magnetic trap was manipulated by adiabatically reducing the magnetic bias field along the trap axis to zero. This distributed the condensate population across its three spin states and created a spin texture. Each spin state acquired a different phase winding which caused the spin components to separate radially.

摘要

无芯涡旋被相位印刻在一个自旋玻色-爱因斯坦凝聚体中。通过沿阱轴绝热地将磁偏置场降低到零，对置于伊奥费-普里查德磁阱中的F = 1钠凝聚体的三分量序参量进行操控。这使得凝聚体粒子数分布在其三个自旋态上，并产生了一种自旋纹理。每个自旋态获得了不同的相位缠绕，这导致自旋分量沿径向分离。