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Physical Review A

Beam splitter for Bose-Einstein condensates based on Bragg scattering from a cavity mode

Frank Burgbacher, Jürgen Audretsch

Published Nov 1, 1999• 4 citations
Publisher

Abstract

We demonstrate that a Bose-Einstein condensate that interacts with a standing wave in a cavity shows the same Bragg oscillations as a single atom. This may serve as a basis for the construction of a beam splitter for condensates. The setup is compared with the beam splitter for condensates based on a standing laser wave.
DOI
10.1103/physreva.60.r3385

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Atomic beam splitter needs for the practical realization of nano-scale lithography by coherent scattering of the atoms. We consider the different types of atomic beam splitters, which could be used for the creation of the space structures with nano-scale period. We concentrate to a few main schemes of an interaction between an atom beam and optical radiation, which can produce a large angle splitting of atom beam into only two main momentum components: multi Bragg scattering an atom wave packet in standing wave; coherent splitting by scattering of an atom wave packet in standing wave with modulated intensity, when the intensity of the standing wave changes harmonically. We discuss also the experimental possibility of an atom selection in internal states for obtaining of space periodical structure with high clearance.
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