Atom-to-molecule conversion efficiency and adiabatic fidelity

Abstract

The efficiency of converting two-species fermionic atoms into bosonic molecules is investigated in terms of mean-field Lagrangian density. We find that the STIRAP technique aided by Feshbach resonance is more effective than the bare Fechbach resonance for ${}^6$Li atoms rather than ${}^{40}$K atoms. We also make general consideration on the symmetry and its relevant conservation law, which enable us to introduce a natural definition of adiabatic fidelity for CPT state. The calculated values of the fidelity then provide an interpretation on why the conversion efficiencies for ${}^{40}$K and ${}^6$Li are distinctly different.

Revtex, 6 pages, 4 figures

References in corpus (11)

• Observation of resonance condensation of fermionic atom pairs
• Observation of Bose-Einstein Condensation of Molecules
• Creation of ultracold molecules from a Fermi gas of atoms
• Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas
• Production of Long-Lived Ultracold Li2 Molecules from a Fermi gas
• Tuning p-wave interactions in an ultracold Fermi gas of atoms
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Observation of Feshbach resonances between two different atomic species
• Bose-Stimulated Raman Adiabatic Passage in Photoassociation
• Creating stable molecular condensate using a generalized Raman adiabatic passage scheme
• Conversion of ${}^{40}$K-${}^{87}$Rb mixtures into stable molecules

Cited by in corpus (2)

• Fidelity approach to quantum phase transitions
• Bound state of solution of Dirac-Coulomb problem with spatially dependent mass