Any temperature-dependent unitary driving on a thermalized quantum probe universally boosts its quantum Fisher information for thermometry above the static equilibrium value via a positive kernel of information currents.
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Coherence enables anomalous work extraction in qubit gate dynamics via negative Kirkwood-Dirac quasiprobabilities, with a compositional relation connecting circuit-level work statistics to individual gates.
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Shake before use: universal enhancement of quantum thermometry by unitary driving
Any temperature-dependent unitary driving on a thermalized quantum probe universally boosts its quantum Fisher information for thermometry above the static equilibrium value via a positive kernel of information currents.
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Quantum Coherence and Anomalous Work Extraction in Qubit Gate Dynamics
Coherence enables anomalous work extraction in qubit gate dynamics via negative Kirkwood-Dirac quasiprobabilities, with a compositional relation connecting circuit-level work statistics to individual gates.