Coherent Phase Control in Closed and Open Quantum Systems: A General   Master Equation Approach
  The underlying mechanisms for one photon phase control are revealed through a master equation approach. Specifically, two mechanisms are identified, one operating on the laser time scale and the other on the time scale of the system-bath interaction. The effect of the secular and non-secular Markovian approximations are carefully examined. 
Leonardo A. Pachon, Li Yu, Paul Brumer
quant-ph physics.bio-ph physics.chem-ph