Quantum Computing, Qiskit, Fourier Transform, Addition.
numbers. j and k are indices, ranging from 0 to N-1. N is the length of the data set x. A simple example will help our understanding. Given x = {1, 2}, can we calculate its discrete Fourier transform? Here N is 2, as there are two elements in the data set x. j and k range from 0 to 1. x__0 is 1,