Berlin 2005 – wissenschaftliches Programm

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Q: Quantenoptik und Photonik

Q 3: Poster Quanteninformation, -kommunikation und Quantencomputer

Q 3.20: Poster

Freitag, 4. März 2005, 11:00–12:30, Poster HU

Surface Quality of Atom Chips — •Sönke Groth^1,2, Peter Krüger¹, Stephan Wildermuth¹, Diana Mahalu², Israel Bar-Joseph², and Jörg Schmiedmayer¹ — ¹Physikalisches Insitut, Heidelberg, Germany — ²Weizmann Institute of Science, Rehovot, Israel

Neutral Atoms are traped and cooled to BEC with Atom Chips. Advantages of Atom Chips are high current densities, submicron shaped wires with thickness from nm to µm scale for exactly defined potentials and serial production. Nanofabrication lithography enables to produce high quality surfaces. These are used as mirrors for laser cooling and are important for well defined current flow in the wires, as the trapped atoms are sensitive on small changes in the potential. Different materials were tested on their surface qualities and usability. Also further developments of Atom Chips are shown.