gusucode.com > qit_matlab_0.10.0工具箱源码程序 > qit/@state/prob.m
function p = prob(s) % PROB Measurement probabilities of the state in the computational basis. % p = prob(s) % % Vector p holds the probabilities of finding a system % in the state s in all the different states of the computational basis. % Ville Bergholm 2009 if is_ket(s) % state vector p = abs(s.data).^2; else % state operator p = real(diag(s.data)); end