From Dynamical to Steady-State Many-Body Metrology: Precision Limits and Their Attainability with Two-Body Interactions

We consider the estimation of an unknown parameter θ via a many-body probe. The probe is initially prepared in a product state and many-body time-independent interactions enhance its θ sensitivity during the dynamics and/or in the steady state. We present bounds on the quantum Fisher information, an...

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Bibliographic Details
Main Authors: Ricard Puig, Pavel Sekatski, Paolo Andrea Erdman, Paolo Abiuso, John Calsamiglia, Martí Perarnau-Llobet
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:PRX Quantum
Online Access:http://doi.org/10.1103/PRXQuantum.6.030309
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