82 citations · 233 across the 11 of their papers we have counts for
11 papers
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…
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-…
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…
Tight tradeoff relation and optimal measurement for multiparameter quantum estimation
Lingna Wang, Hongzhen Chen, Haidong Yuan
In multiparameter quantum estimation, the optimal measurements for different parameters encoded in a quantum state are in general incompatible, giving rise to nontrivial tradeoffs…
Simultaneous Measurement of Multiple Incompatible Observables and Tradeoff in Multiparameter Quantum Estimation
Hongzhen Chen, Lingna Wang, Haidong Yuan
How well can multiple incompatible observables be implemented by a single measurement? This is a fundamental problem in quantum mechanics with wide implications for the performance…
Information geometry under hierarchical quantum measurement
Hongzhen Chen, Yu Chen, Haidong Yuan
In most quantum technologies, measurements need to be performed on the parametrized quantum states to transform the quantum information to classical information. The measurements,…
Optimal Scheme for Quantum Metrology
Jing Liu, Mao Zhang, Hongzhen Chen +2
Quantum metrology can achieve far better precision than classical metrology, and is one of the most important applications of quantum technologies in the real world. To attain the…
Incompatibility measures in multi-parameter quantum estimation under hierarchical quantum measurements
Hongzhen Chen, Yu Chen, Haidong Yuan
The incompatibility of the measurements constraints the achievable precisions in multi-parameter quantum estimation. Understanding the tradeoff induced by such incompatibility is a…
Fluctuation-enhanced quantum metrology
Yu Chen, Hongzhen Chen, Jing Liu +2
The main obstacle for practical quantum technology is the noise, which can induce the decoherence and destroy the potential quantum advantages. The fluctuation of a field, which in…
Ultimate precision of multi-parameter quantum magnetometry under the parallel scheme
Zhibo Hou, Hongzhen Chen, Liqiang Liu +5
The precise measurement of a magnetic field is one of the most fundamental and important tasks in quantum metrology. Although extensive studies on quantum magnetometry have been ca…
Optimal joint estimation of multiple Rabi frequencies
Hongzhen Chen, Haidong Yuan
We study the joint estimation of multiple Rabi frequencies in a multilevel system. By analytically identifying the optimal probe state and the optimal measurement, we obtain the hi…