Suppression and Revival of Weak Localization through Control of   Time-Reversal Symmetry
  We report on the observation of suppression and revival of coherent backscattering of ultra-cold atoms launched in an optical disorder and submitted to a short dephasing pulse, as proposed in a recent paper of T. Micklitz \textit{et al.} [arXiv:1406.6915]. This observation, in a quasi-2D geometry, demonstrates a novel and general method to study weak localization by manipulating time reversal symmetry in disordered systems. In future experiments, this scheme could be extended to investigate higher order localization processes at the heart of Anderson (strong) localization. 
Kilian M\"uller, J\'er\'emie Richard, Valentin V. Volchkov, Vincent   Denechaud, Philippe Bouyer, Alain Aspect and Vincent Josse
cond-mat.quant-gas cond-mat.dis-nn