双阱势中玻色-爱因斯坦凝聚体的原子干涉测量法。

Atom interferometry with Bose-Einstein condensates in a double-well potential.

作者信息

Shin Y, Saba M, Pasquini T A, Ketterle W, Pritchard D E, Leanhardt A E

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. 2004 Feb 6;92(5):050405. doi: 10.1103/PhysRevLett.92.050405.

DOI:10.1103/PhysRevLett.92.050405

PMID:14995291

Abstract

A trapped-atom interferometer was demonstrated using gaseous Bose-Einstein condensates coherently split by deforming an optical single-well potential into a double-well potential. The relative phase between the two condensates was determined from the spatial phase of the matter wave interference pattern formed upon releasing the condensates from the separated potential wells. Coherent phase evolution was observed for condensates held separated by 13 microm for up to 5 ms and was controlled by applying ac Stark shift potentials to either of the two separated condensates.

摘要

利用气态玻色-爱因斯坦凝聚体，通过将光学单阱势变形为双阱势来实现相干分裂，从而展示了一种俘获原子干涉仪。两个凝聚体之间的相对相位由物质波干涉图案的空间相位确定，该干涉图案是在将凝聚体从分离的势阱中释放时形成的。对于相隔13微米保持分离长达5毫秒的凝聚体，观察到了相干相位演化，并且通过对两个分离的凝聚体中的任意一个施加交流斯塔克频移势来进行控制。