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quant-ph2025
Geometric Invariants of Quantum Metrology
Christopher Wilson, John Drew Wilson, Luke Coffman +2
We establish a previously unexplored conservation law for the Quantum Fisher Information Matrix (QFIM) expressed as follows; when the QFIM is constructed from a set of observables…
quant-ph2024
Robust Quantum Sensing with Multiparameter Decorrelation
Shah Saad Alam, Victor E. Colussi, John Drew Wilson +3
The performance of a quantum sensor is fundamentally limited by noise. This noise is particularly damaging when it becomes correlated with the readout of a target signal, caused by…