Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
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A kinetic uncertainty relation is analytically derived for many-body collective dissipation, revealing that collective interactions enable precision to scale with particle number N.
A nonperturbative bound on evolution distance yields explicit upper bounds on errors of the rotating-wave and secular approximations in dissipative open quantum systems.
Path integral molecular dynamics can compute non-equilibrium time evolution and relaxation in open quantum systems through a formal equivalence to the Lindblad equation.
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Precision Limits of Multiparameter Markovian-Noise Metrology
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
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Kinetic Uncertainty Relation in Collective Dissipative Quantum Many-Body Systems
A kinetic uncertainty relation is analytically derived for many-body collective dissipation, revealing that collective interactions enable precision to scale with particle number N.
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Rotating-Wave and Secular Approximations for Open Quantum Systems
A nonperturbative bound on evolution distance yields explicit upper bounds on errors of the rotating-wave and secular approximations in dissipative open quantum systems.
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Open quantum systems beyond equilibrium: Lindblad equation and path integral molecular dynamics
Path integral molecular dynamics can compute non-equilibrium time evolution and relaxation in open quantum systems through a formal equivalence to the Lindblad equation.