Tensor, TensorFlow, Machine Learning, Quantum Computing.
3 qubit state and the U is a 2 qubit transformation. A 2 qubit gate is a 4 x 4 shape matrix and thus for us to create a tensor out of it, we need a 4 order size-2 tensor as we have 4 indices for each number in the matrix i,j,k,l. So the U = Uɪᴊᴋʟ and the 3 qubit state can be represented with three