2 papers
quant-ph2025
Optimal finite-dimensional probe states for quantum phase estimation
Jin-Feng Qin, Yuqian Xu, Jing Liu
Phase estimation is a major mission in quantum metrology, especially in quantum interferometry. A full phase estimation scheme usually includes the optimal probe state and measurem…
quant-ph2025
Quantum-enhanced weak absorption estimation with correlated photons
Zhucheng Zhang, Xue Zhang, Jing Liu +1
Conventional absorption spectroscopy relies on coherent laser sources, and in turn suffers from the inherent limitation of shot noise, especially in estimating weak absorption. Her…