Anomalous heat flow occurs in quantum prepare-transform-measure protocols only when noncontextuality inequalities are violated, for evolution times in (0, τ_c), with analysis of an existing experiment and extension to qutrits.
Lostaglio, Certifying Quantum Signatures in Thermo- dynamics and Metrology via Contextuality of Quantum Linear Response, Phys
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Universal quantum cloning is impossible in noncontextual hidden-variable theories because the required confusability-preserving transformation forces confusability to take only discrete values, contradicting the continuity of arbitrary input states.
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Contextuality in anomalous heat flow
Anomalous heat flow occurs in quantum prepare-transform-measure protocols only when noncontextuality inequalities are violated, for evolution times in (0, τ_c), with analysis of an existing experiment and extension to qutrits.
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Universal quantum cloning beyond noncontextual theory
Universal quantum cloning is impossible in noncontextual hidden-variable theories because the required confusability-preserving transformation forces confusability to take only discrete values, contradicting the continuity of arbitrary input states.