Decoherence in quantum lossy systems: superoperator and matrix techniques Navid Yazdanpanah, Mohammad Kazem Tavassoly and Hector Manuel Moya-Cessa Eur. Phys. J. D, 71 6 (2017) 171 Published online: 22 June 2017 DOI: 10.1140/epjd/e2017-70701-2