Suppression of Inelastic Collisions Between Polar Molecules With a Repulsive Shield

Author(s): A. V. Gorshkov, P. Rabl, G. Pupillo, A. Micheli, P. Zoller, H. Büchler

Journal: Physical Review Letters

Volume: 101

Page(s): 073201

Year: 2008

DOI Number: 10.1103/PhysRevLett.101.073201

Link: Link to publication


We propose and analyze a technique that allows one to suppress inelastic collisions and simultaneously enhance elastic interactions between cold polar molecules. The main idea is to cancel the leading dipole-dipole interaction with a suitable combination of static electric and microwave fields in such a way that the remaining van der Waals-type potential forms a three-dimensional repulsive shield. We analyze the elastic and inelastic scattering cross sections relevant for evaporative cooling of polar molecules and discuss the prospect for the creation of stable crystalline structures.

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