Velocity selector with a microwave magnetic dipole transition

摘要

We proposed a method based on microwave magnetic dipole transitions toprepare samples of atoms with well defined position and velocity. Eachmicrowave pulse corresponds to a position measurement for the atoms and twopulses separated by a given delay result in a velocity measurement. The methodgives velocity sensitivity approaching that obtained with Raman transitions butit is easier to implement. Moreover, it has the advantages that it also selectsin position and has less demanding experimental requirements. The method can bedemonstrated in a magneto-optical trap.