Microwave field modification of Feshbach resonances in collisions of ultra cold polar molecules

POSTER

Abstract

We present a detailed analysis of Feshbach resonances in ultracold collisions of NH molecules and He atoms in the presence of superimposed magnetic and microwave laser fields. We use dressed-state formalism to describe the effects of radiation field on collision complex. We show that microwave field couplings may shift the position and significantly modify the width of magnetic Feshbach resonances, thereby making the microwave field control of ultracold molecular collisions possible.

Authors

  • Sergey Alyabyshev

    University of British Columbia

  • Roman Krems

    University of British Columbia, Department of Chemistry, University of British Columbia, Vancouver BC, V6T1Z1, Canada, Department of Chemistry, University of British Columbia, Vancouver, B.C. V6T 1Z1, Canada