Review of Decoherence Free Subspaces, Noiseless Subsystems, and   Dynamical Decoupling
  Quantum information requires protection from the adverse affects of decoherence and noise. This review provides an introduction to the theory of decoherence-free subspaces, noiseless subsystems, and dynamical decoupling. It addresses quantum information preservation as well protected computation. 
Daniel A. Lidar
quant-ph cond-mat.other physics.chem-ph