Atom-to-molecule conversion efficiency and adiabatic fidelity

Li-Hua Lu and You-Quan Li
Phys. Rev. A 77, 053611 – Published 20 May 2008

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 stimulated Raman adiabatic passage technique aided by Feshbach resonance is more effective than the bare Feshbach resonance for L6i atoms rather than K40 atoms. We also generally consider the symmetry and its relevant conservation law, which enables us to introduce a natural definition of adiabatic fidelity for a coherent population trapping state. The calculated values of the fidelity are presented and then we provide an explanation of why the conversion efficiencies for K40 and L6i are distinctly different.

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  • Received 6 December 2007

DOI:https://doi.org/10.1103/PhysRevA.77.053611

©2008 American Physical Society

Authors & Affiliations

Li-Hua Lu and You-Quan Li

  • Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China

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Vol. 77, Iss. 5 — May 2008

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