9 papers
Dose-efficient Quantum Phase Estimation in Lossy Optical Interferometry
Qilin Yu, Ben Wang, Kaimin Zheng +3
Optical interferometry is a cornerstone technique for precise phase measurements across various fields. In many applications, for example, biological imaging, it often necessitates…
Efficient enumeration of quadratic lattices
Eran Assaf, Victor Chen, Rohan Garg +1
We present an algorithm to enumerate isometry classes of integral quadratic lattices of a given rank and determinant, and analyze its running time by giving bounds on the number of…
Experimental Joint Estimation of Phase and Phase Diffusion via Deterministic Bell Measurements
Ben Wang, Minghao Mi, Huangqiuchen Wang +2
Accurate phase estimation plays a pivotal role in quantum metrology, yet its precision is significantly affected by noise, particularly phase-diffusive noise caused by phase drift.…
Superresolution of unequal-brightness thermal sources for stellar interferometry
Chenyu Hu, Ben Wang, Jiandong Zhang +4
Resolving high-contrast targets is a fundamental yet highly challenging task in astronomy. Using quantum estimation theory, we demonstrate that the ultimate limit for estimating th…
Approaching the Multiparameter Quantum Cramér-Rao Bound via Classical Correlation and Entangling Measurements
Minghao Mi, Ben Wang, Lijian Zhang
Multiparameter quantum metrology is essential for a wide range of practical applications. However, simultaneously achieving the ultimate precision for all parameters, as prescribed…
A Geometric Quantum Speed Limit: Theoretical Insights and Photonic Implementation
Qianyi Wang, Ben Wang, Jun Wang +1
Quantum mechanics imposes a lower bound on the time required for a quantum system to reach certain given targets. In this paper, from a geometric perspective, we introduce a new qu…