Thanks JorisL. So if it is of any help, the two matrices are here:
http://pastebin.com/s3B1T0HD
I want to see if there is a unitary (up to some approximation anyway) , that takes me from one matrix to the other. Anyone know how to do this in Mathematica? or Numpy Python ?
I don't necessarily need to see the matrix form of the unitary, I just have to prove that it does exist, i.e. that my two states are unitarily equivalent. And yep, I did google.
I have to find a unitary transformation that takes me from one quantum state to another (or if there is such a transformation), given the two quantum states in matrix form. The matrices are huge (smallest is 16x16) , so doing it on paper is not an option. Does anyone know how I can do this in...