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I. Lesanovsky, S. Hofferberth, L.M. Andersson, P. Krüger, Jörg Schmiedmayer, Thorsten Schumm:
"Adiabatic radio-frequency potentials for the coherent manipulation of matter waves";
Physical Review A, 73 (2006), 033619-1 - 033619-5.

Adiabatic dressed state potentials are created when magnetic substates of trapped atoms are coupled by a
radio-frequency field. We discuss their theoretical foundations and point out fundamental advantages over
potentials purely based on static fields. The enhanced flexibility enables one to implement numerous configurations,
including double wells, Mach-Zehnder, and Sagnac interferometers which even allows for internal
state-dependent atom manipulation. These can be realized using simple and highly integrated wire geometries
on atom chips.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC06588245