Xiao-Ming Lu

Performance-tradeoff relation for locating two incoherent optical point sources

2022 · Physical Review A

The optimal quantum measurements for estimating individual parameters might be incompatible with each other, so they cannot be jointly performed. The tradeoff between the estimation precisions for different parameters can be characterized by information regret: …

Ultimate tradeoff relation of quantum precision limits in multiparameter linear measurement

2026 · Quantum Science and Technology

Abstract Linear measurements are widely applied in sensing classical signals, e.g. gravitational wave (GW), and are developing toward joint measurement of multiple parameters. In this work, focusing on multiparameter linear measurements of classical monochromatic signals, …