Quantum Computing, Qiskit, Fourier Transform, Addition.
qubit state ψ: What do I mean by a vector representing the state of a qubit? Classical bits can only have one of two values, one |1> or zero |0>. Qubits, however, can have a mix of both: ψ = α|0> + β|1> , where α and β are complex numbers. This qubit state (a mix of both the |0> and the |1> states)