Diffraction of a bose-Einstein condensate from a magnetic lattice on a microchip

We experimentally study the diffraction of a Bose-Einstein condensate from a magnetic lattice, realized by a set of 372 parallel gold conductors which are microfabricated on a silicon substrate. The conductors generate a periodic potential for the atoms with a lattice constant of 4 microm. After exp...

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Bibliographic Details
Published in:Physical review letters 2005-10, Vol.95 (17), p.170405.1-170405.4, Article 170405
Main Authors: GÜNTHER, A, KRAFT, S, KEMMLER, M, KOELLE, D, KLEINER, R, ZIMMERMANN, C, FORTAGH, J
Format: Article
Language:English
Subjects:
ATOMS
BEAM OPTICS
BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFRACTION
DIFFRACTION GRATINGS
Exact sciences and technology
EXPERIMENTAL DATA
GOLD
INTERFEROMETERS
INTERFEROMETRY
LATTICE PARAMETERS
PERIODICITY
Physics
POTENTIALS
RUBIDIUM
SILICON
SUBSTRATES
TIME-OF-FLIGHT METHOD
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Summary:We experimentally study the diffraction of a Bose-Einstein condensate from a magnetic lattice, realized by a set of 372 parallel gold conductors which are microfabricated on a silicon substrate. The conductors generate a periodic potential for the atoms with a lattice constant of 4 microm. After exposing the condensate to the lattice for several milliseconds we observe diffraction up to fifth order by standard time of flight imaging techniques. The experimental data can be quantitatively interpreted with a simple phase imprinting model. The demonstrated diffraction grating offers promising perspectives for the construction of an integrated atom interferometer.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.95.170405