Necessary and sufficient condition for Markovian-dissipative-dynamics-induced quantum discord
Xueyuan Hu, Ying Gu, Qihuang Gong, Guang‐Can Guo · Physical Review A · 2011
A Markovian dissipative quantum channel can generate quantum discord from some bipartite product states if and only if it cannot be reduced to individual decoherence channels independently acting on each qudit. As a byproduct, we also prove that proper individual decoherence can transform the classical correlation into quantum discord. Our result builds a tight connection between quantum discord and collective decoherence.