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Fidelity of quantum strategies with applications to cryptography
2018
Quantum
We introduce a definition of the fidelity function for multi-round quantum strategies, which we call the strategy fidelity, that is a generalization of the fidelity function for quantum states. We provide many properties of the strategy fidelity including a Fuchs-van de Graaf relationship with the strategy norm. We also provide a general monotinicity result for both the strategy fidelity and strategy norm under the actions of strategy-to-strategy linear maps. We illustrate an operational
doi:10.22331/q-2018-09-03-89
fatcat:rx4g2kqu6nexjegoqrtc7gs7ty