gusucode.com > qit_matlab_0.10.0工具箱源码程序 > qit/utils/vec.m
function v = vec(rho) % VEC Flattens a matrix into a vector. % v = vec(rho) % % Matrix rho is flattened columnwise into a column vector v. % % Used e.g. to convert state operators to superoperator representation. % JDW 2009 % Ville Bergholm 2009 v = rho(:);