Coherent information
= Coherent information
{title2=$I_c(\Lambda,\rho)$}
{wiki}
For a channel output $Q$ and complementary environment output $E$, coherent information is $I_c(\Lambda,\rho)=S(Q)-S(E)=-H(R|Q)$ for a purification reference $R$.
= Coherent information
{title2=$I_c(\Lambda,\rho)$}
{wiki}
For a channel output $Q$ and complementary environment output $E$, coherent information is $I_c(\Lambda,\rho)=S(Q)-S(E)=-H(R|Q)$ for a purification reference $R$.