Clock Shifts of Optical Transitions in Ultracold Atomic Gases
Clock Shifts of Optical Transitions in Ultracold Atomic Gases
We calculate the shift, due to interatomic interactions, of an optical transition in an atomic Fermi gas trapped in an optical lattice, as in recent experiments of Campbell et al. [Science 324, 360 (2009)]. Using a pseudospin formalism to describe the density matrix of atoms, we derive a Bloch equation …