Reaction coordinate mapping shows nonmonotonic current fluctuations and noise below the classical thermodynamic uncertainty bound in a strongly coupled driven qubit, tied to non-Gaussianity and coherence in the reaction coordinate.
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Displaced number states in the quantum Rabi model converge to the corresponding semiclassical dynamics in the joint limit of vanishing coupling and infinite displacement, with convergence slowing as the Fock number n increases.
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Current fluctuations in nonequilibrium open quantum systems beyond weak coupling: a reaction coordinate approach
Reaction coordinate mapping shows nonmonotonic current fluctuations and noise below the classical thermodynamic uncertainty bound in a strongly coupled driven qubit, tied to non-Gaussianity and coherence in the reaction coordinate.
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Convergence to semiclassicality in the quantum Rabi model
Displaced number states in the quantum Rabi model converge to the corresponding semiclassical dynamics in the joint limit of vanishing coupling and infinite displacement, with convergence slowing as the Fock number n increases.