Volume 88, Number 2, October 2009
|Number of page(s)||6|
|Published online||28 October 2009|
Dispersive atom interferometry phase shifts due to atom-surface interactions
Laboratoire Collisions Agrégats Réactivité IRSAMC; Université de Toulouse-UPS and CNRS UMR 5589 F-31062 Toulouse, France, EU
2 Department of Physics, University of Arizona - Tucson, AZ 85721, USA
Corresponding author: firstname.lastname@example.org
Accepted: 1 October 2009
We used the Toulouse atom interferometer to study how Van der Waals (VdW) interactions between atoms and surfaces cause velocity-dependent phase shifts for atomic de Broglie waves. By introducing a thin nano-grating in one branch of this interferometer, we observed a phase shift that depends on velocity to the power -0.49. This dispersion serves to measure both the strength and the position dependence of the atom-surface potential in the range from 5 to 10 nm from the surface, and it can also set new limits on non-Newtonian gravity in the 2 nm range.
PACS: 03.75.Dg – Atom and neutron interferometry / 34.50.-s – Scattering of atoms and molecules / 34.20.-b – Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.