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quant-ph2026
Geometric construction of optimal probe states in distributed multiparameter quantum sensing
Hongzhen Chen, Lingna Wang, Haidong Yuan
The choice of probe state is essential to achieving ultimate precision in quantum metrology. For a single parameter, an equal superposition of eigenstates associated with the large…
quant-ph2026
Minimal Trade-off and Optimal Measurement for Multiparameter Quantum Estimation
Lingna Wang, Hongzhen Chen, Haidong Yuan
A fundamental challenge in multiparameter quantum estimation arises from the incompatibility of optimal measurements for different parameters, leading to intricate precision trade-…
math.OC2026
Stochastic Block Bregman Projection with Polyak-like Stepsize for Possibly Inconsistent Convex Feasibility Problems
Lu Zhang, Hongzhen Chen, Hongxia Wang +1
Stochastic projection algorithms for solving convex feasibility problems (CFPs) have attracted considerable attention due to their broad applicability. In this paper, we propose a…