Classical-quantum state
= Classical-quantum state
{title2=CQ state}
A <classical-quantum state> has block-diagonal form $\rho_{XB}=\sum_xp_x|x\rangle\langle x|\otimes\rho_x$. Its <entropy> is $H(p)+\sum_xp_xS(\rho_x)$.
= Classical-quantum state
{title2=CQ state}
A <classical-quantum state> has block-diagonal form $\rho_{XB}=\sum_xp_x|x\rangle\langle x|\otimes\rho_x$. Its <entropy> is $H(p)+\sum_xp_xS(\rho_x)$.