I think I might be on to something with this, but am not quite there yet:
\hat{S}_z =\frac{\hbar}{2} \begin{pmatrix}1 & 0 \\ 0 & -1 \\ \end{pmatrix}
Rotate by angles \theta, \phi to get
\hat{S}_\phi = \frac{\hbar}{2} \begin{pmatrix} \cos \theta & \sin \theta e^{-i\phi} \\
\sin \theta...
Hi, I can't get my head around this question.
Homework Statement
The Bell state:
|\psi\rangle = \frac{1}{\sqrt{2}}\left(|\uparrow_1\rangle|\downarrow_2\rangle +|\downarrow_1\rangle |\uparrow_2\rangle \right)
Find the correlation coefficient of the measurement of the spins in the directions...