“…is the IQFT of the input quantum state vector |A (i.e., |w = IQF T {|A }) where w n (n = 0, ..., N − 1) is a normalized complex value equal to w n = wn w , w n being derived by A as in (7) through IDFT. However, it worth pointing out that there is no way to retrieve/measure/observe the (complex) values of the N entries of w ( w = { w n ; n = 0, ..., N − 1}) at the output of the IQFT operation (i.e., from |w ), but only the probability p n (n = 0, ..., N − 1) that the output quantum state vector |w would be equal to the n-th (n = 0, ..., N − 1) L-qubit |a n .…”