Partial particle and wave information and weak duality games. (English) Zbl 1507.81071
Summary: Duality games are a way of looking at wave-particle duality. In these games. Alice and Bob together are playing against the house. The house specifies, at random, which of two sub-games Alice and Bob will play. One game, Ways, requires that they obtain path information about a particle going through an \(N\)-path interferometer and the other, Phases, requires that they obtain phase information. In general, because of wave-particle duality, Alice and Bob cannot always win the overall game. However, if the required amount of path and phase information is not too great, for example specifying a set of paths or phases, one of which is the right one, then they can always win. Here we study examples of duality games that can always be won, and develop a wave-particle duality relation expressed only in terms of mutual information to help analyze these games.
MSC:
| 81P68 | Quantum computation |
| 81P45 | Quantum information, communication, networks (quantum-theoretic aspects) |
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