Magnetic field dependence of Raman coupling in Alkali atoms

Abstract

We calculate the magnetic field dependence of Rabi rates for two-photon optical Raman processes in alkali atoms. Due to a decoupling of the nuclear and electronic spins, these rates fall with increasing field. At the typical magnetic fields of alkali atom Feshbach resonances (B\sim 200G-1200G), the Raman rates have the same order of magnitude as their zero field values, suggesting one can combine Raman-induced gauge fields/spin-orbital coupling with strong Feshbach-induced interactions. The exception is ${}^6$Li, where there is a factor of 7 suppression in the Raman coupling, compared to its already small zero-field value.

5 pages, 4 figures

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• Frustrated magnets without geometrical frustration in bosonic flux ladders
• Quantum science with arrays of metastable helium-3 atoms
• Encoding a topological gauge theory on a ring-shaped Raman-coupled Bose gas