and nanomechanical resonators on an atom chip
and nanomechanical resonators on an atom chip
and nanomechanical resonators on an atom chip
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Atom-surface interacti<strong>on</strong>s<br />
Previously unexplored area of <strong>atom</strong>-surface physics<br />
Theory: C. Henkel et al., 1999-2003<br />
Experiments: L<strong>on</strong>d<strong>on</strong>, Boulder, St<strong>an</strong>ford, MPQ/LMU<br />
1. Thermal magnetic near-field noise<br />
magnetic dipole<br />
moment of <strong>atom</strong><br />
fluctuating magnetic fields<br />
due to thermal moti<strong>on</strong> of<br />
electr<strong>on</strong>s in <strong>chip</strong> c<strong>on</strong>ductors<br />
Spin flips (loss) + decoherence<br />
2. Attractive surface potential<br />
• v<strong>an</strong> der Waals/Casimir-Polder potential<br />
• Potential due to surface adsorbates<br />
electric polarizability<br />
of <strong>atom</strong><br />
(fluctuating) electric<br />
dipoles in surface<br />
potential<br />
V m<br />
V m<br />
+V s<br />
Loss due to reduced trap depth<br />
dist<strong>an</strong>ce to <strong>chip</strong> surface
Change language