gusucode.com > qit_matlab_0.10.0工具箱源码程序 > qit/utils/rmul.m
function S = rmul(R, m) % RMUL Superoperator equivalent for multiplying from the right. % S = rmul(R); % % rho*R == inv_vec(rmul(R)*vec(rho)) % Ville Bergholm 2009 if (nargin < 2) m = size(R, 1); % assume target is a square matrix end S = kron(R.', speye(m));