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Fidelity based purity and coherence for quantum states
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Fidelity based purity and coherence for quantum states
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Purity and coherence of a quantum state are recognized as useful resources for various information processing tasks. In this article, we propose a fidelity based valid measure of purity and coherence monotone and establish a relationship between them. This formulation of coherence is extended to quantum correlation relative to measurement. We have also studied the role of weak measurement on purity.
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Cited by 1 Pith paper
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Trade-off between predictability and quantum coherence for multi-path interferometry and its operational interpretation
Predictability defined via Bures distance is exactly complementary to Kirkwood–Dirac coherence for pure states and gives a min-entropy bound for classically-labelled sources.
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