Atom-to-molecule conversion efficiency and adiabatic fidelity

Details Atom-to-molecule conversion efficiency and adiabatic fidelity Atom-to-molecule conversion efficiency and adiabatic fidelity

2008-03-09

arxiv.org/abs/0803.1297v1

Phys. Rev. A 77, 053611 (2008)

Physics

Condensed Matter

Other Condensed Matter

Revtex, 6 pages, 4 figures

Scientific paper

10.1103/PhysRevA.77.053611

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.

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