Document Type

Article

Publication Date

Spring 3-11-2005

Publication Title

Physical Review Letters

ISSN

0031-9007

Volume

94

Issue

9

First Page

090405-1

Last Page

090405-4

DOI

10.1103/PhysRevLett.94.090405

Abstract

An atom Michelson interferometer is implemented on an “atom chip.” The chip uses lithographically patterned conductors and external magnetic fields to produce and guide a Bose-Einstein condensate. Splitting, reflecting, and recombining of condensate atoms are achieved by a standing-wave light field having a wave vector aligned along the atom waveguide. A differential phase shift between the two arms of the interferometer is introduced by either a magnetic-field gradient or with an initial condensate velocity. Interference contrast is still observable at 20% with an atom propagation time of 10 ms.

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