Non-Holonomic Control IV : Coherence Protection in a Rubidium isotope
  In this paper, we present a realistic application of the coherence protection method proposed in the previous article. A qubit of information encoded on the two spin states of a Rubidium isotope is protected from the action of electric and magnetic fields. 
E. Brion, V.M. Akulin, D. Comparat, I. Dumer, V. Gershkovich, G.   Harel, G. Kurizki, I. Mazets and P. Pillet