Vectorization of quantum operations and its use
arXiv:0911.2539
Abstract
We give a detailed exposition of the "vectorized" notation for dealing with quantum operations. This notation is used to highlight the relationships between representations of completely-positive dynamics. Vectorization considerably simplifies the analysis of different methods of quantum process tomography, and enables us to derive compact representation of the investigated quantum operations in terms of the resulting data.
12 pages, long-overdue modifications + corrections following the feedback