Coherence Control of Adiabatic Decoherence in a Three-level Atom with   Lambda Configuration
  In this paper, we study the suppression of adiabatic decoherence in a three-level atom with $\Lambda$ configuration using bang-bang control technique. We have given the decoupling bang-bang operation group, and programmed a sequence of periodic radio frequency twinborn pulses to realize the control process. Moreover, we have studied the process with non-ideal situation and established the condition for efficient suppression of adiabatic decoherence. 
Xiao-Shu Liu, Wu Re-bing, Yang Liu, Jing Zhang and Gui Lu Long