Question

I. What is the matrix (4x4) for ZX (Z applied on the first qubit and X applied on the second qubit)?
II. What quantum state do you have to input in order to get output:
a) 1/2sqrt(|00⟩+|11⟩)?
b) |11⟩

Answer 1

do you have the answer?

Answer 2

b) 0 1/sqrt(2)
-1/sqrt(2) 0