Quantum Stochastic Walk models for quantum state discrimination

Publication date: Available online 11 December 2019Source: Physics Letters AAuthor(s): Nicola Dalla Pozza, Filippo CarusoAbstractQuantum Stochastic Walks (QSW) allow for a generalization of both quantum and classical random walks by describing the dynamic evolution of an open quantum system on a network, with nodes corresponding to quantum states of a fixed basis. We consider the problem of quantum state discrimination on such a system, and we solve it by optimizing the network topology weights. Finally, we test it on different quantum network topologies and compare it with optimal theoretical bounds.

Source: Physics Letters A - December 13, 2019 Category: Physics Source Type: research