Bell basis (source code)

= Bell basis
{c}
{title2=$\{|\Phi^+\rangle,|\Phi^-\rangle,|\Psi^+\rangle,|\Psi^-\rangle\}$}

The Bell basis is the two-qubit case of the <generalized Bell basis>. Its four vectors are the <Bell states>, and a <Bell-basis measurement> projects onto them.