3 papers
quant-ph2026
Finite-Shot Sensitivity for Moment Estimation in Quantum Metrology
Shaowei Du, Shuheng Liu, Weidong Li +3
The quantum Cramér-Rao bound can be saturated only asymptotically and does not specify how many measurements are needed for a concrete estimator to approach it. We develop a finit…
quant-ph2026
Characterizing resources for multiparameter estimation of SU(2) and SU(1,1) unitaries
Shaowei Du, Shuheng Liu, Frank E. S. Steinhoff +1
We analyze the task of estimating a multi-parameter unitary belonging to the or groups, in a two-bosonic-mode scenario and investigate the scaling of the precisio…
quant-ph2026
Uncertainty relations between quantum Fisher information and entanglement monotones
Shaowei Du, Shuheng Liu, Matteo Fadel +2
Entanglement is widely regarded as an essential resource for a number of tasks and can in some cases be quantified by figures of merit related to those tasks. In quantum metrology,…