UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Control by quantum dynamics on graphs

Godsil, C; Severini, S; (2010) Control by quantum dynamics on graphs. PHYS REV A , 81 (5) , Article 052316. 10.1103/PhysRevA.81.052316.

Full text not available from this repository.


We address the study of controllability of a closed quantum system whose dynamical Lie algebra is generated by adjacency matrices of graphs. We characterize a large family of graphs that renders a system controllable. The key property is a graph-theoretic feature consisting of a particularly disordered cycle structure. Disregarding efficiency of control functions, but choosing subfamilies of sparse graphs, the results translate into continuous-time quantum walks for universal computation.

Title:Control by quantum dynamics on graphs
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science

Archive Staff Only: edit this record