Quantum Computing, Quantum Information, Quantum, Quantum Fourier Transform, Quantum Entanglement.
step in this direction, we propose to study an example in the 2-qubit case. Let us consider the following state: One can observe that this state is a separable state, since the first qubit is always equal to |0⟩, it can be factorized by the first qubit (while the second will be in the superposition