What is the difference between classical and quantum information?
From our physics color commentator Rob Sheldon: — a) Classical information is local. It is like beans in a bag, one, say, for each bushel of wheat. They are not connected to each other, each is independent of the other. b) Quantum information is non-local. It depends on the orientation of the other beans. It is like beads on an abacus, or digits “in the 100’s column” that count differently than digits “in the one’s column”. The information in (a) is calculated by combinations. The information in (b) is calculated with permutations. If I have 3 identical beans, then the number of combinations is 0, 1, 2, 3, so it represents 2 “bits” of base-2 information. But if the positions Read More ›