Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 44: Ultrakalte Atome (Manipulation und Detektion)
Q 44.2: Vortrag
Mittwoch, 21. März 2007, 14:15–14:30, 5D
Microwave near-fields on atom chips — •Pascal Böhi1, Johannes Hoffrogge1, Theodor Hänsch1, Jakob Reichel2, and Philipp Treutlein1 — 1Max-Planck-Institut für Quantenoptik and Ludwig-Maximilians-Universität, München, Germany — 2Laboratoire Kastler Brossel de l’E.N.S, Paris, France
We present the status of our experiment with microwave near-fields on atom chips. Microwave near-fields are a key ingredient for atom chip applications such as quantum information processing, entanglement of Bose-Einstein condensates, atom interferometry, and chip-based atomic clocks [1,2].
We have integrated miniaturized microwave guiding structures on our atom chip, using a newly developed lithographic fabrication process for chips with multiple layers of metallization. The micrometer-sized structures allow to generate microwave near-fields with unusually strong gradients. Through microwave dressing of hyperfine states, state-selective double-well potentials can be created, which are the basic building block for a collisional quantum phase gate on the atom chip [2].
[1] P. Treutlein et al., Phys. Rev. Lett. 92, 203005 (2004).
[2] P. Treutlein et al., Phys. Rev. A 74, 022312 (2006).