U公布的经典信息

粒子2的状态

TTP做对应的酉变换

00

$\cos \theta |0\rangle +\sin \theta |1\rangle$

$\left[\begin{array}{cc}1& 0\\ 0& 1\end{array}\right]$

01

$\cos \theta |0\rangle -\sin \theta |1\rangle$

$\left[\begin{array}{cc}1& 0\\ 0& -1\end{array}\right]$

10

$\cos \theta |1\rangle +\sin \theta |0\rangle$

$\left[\begin{array}{cc}0& 1\\ 1& 0\end{array}\right]$

11

$\cos \theta |1\rangle -\sin \theta |0\rangle$

$\left[\begin{array}{cc}0& 1\\ -1& 0\end{array}\right]$