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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OH molecule proposed as quantum probe for joint electric and magnetic field estimation, with optimized stationary and dynamical protocols that address incompatibility and show temperature effects on error.
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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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OH molecule as a quantum probe to jointly estimate electric and magnetic fields
OH molecule proposed as quantum probe for joint electric and magnetic field estimation, with optimized stationary and dynamical protocols that address incompatibility and show temperature effects on error.