TY - JOUR T1 - Universal simulation of Markovian quantum dynamics JF - Physical Review A Y1 - 2001 A1 - Dave Bacon A1 - Andrew M. Childs A1 - Isaac L. Chuang A1 - Julia Kempe A1 - Debbie W. Leung A1 - Xinlan Zhou AB - Although the conditions for performing arbitrary unitary operations to simulate the dynamics of a closed quantum system are well understood, the same is not true of the more general class of quantum operations (also known as superoperators) corresponding to the dynamics of open quantum systems. We propose a framework for the generation of Markovian quantum dynamics and study the resources needed for universality. For the case of a single qubit, we show that a single nonunitary process is necessary and sufficient to generate all unital Markovian quantum dynamics, whereas a set of processes parametrized by one continuous parameter is needed in general. We also obtain preliminary results for the unital case in higher dimensions. VL - 64 UR - http://arxiv.org/abs/quant-ph/0008070v2 CP - 6 J1 - Phys. Rev. A U5 - 10.1103/PhysRevA.64.062302 ER -