Problem 4. Consider the following ensembles, . A collection of states which are either |0) or |1), with equal probability. . A collection of states which are either (10) +2 |1) ) / v2 or (10)-2 |1) ) / v2, with equal probability. . A collection of states which cos(0/2) |0) + sin(0/2)e 4 1), where 0 is drawn uniformly at random from 0, ] and y is drawn uniformly at random from [0, 27)