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quant-ph2026
Unified and computable approach to optimal strategies for multiparameter estimation
Zhao-Yi Zhou, Da-Jian Zhang
Precise estimation of physical parameters underpins both scientific discovery and technological development. A central goal of quantum metrology and sensing is to exploit quantum r…
quant-ph2025★ 13 cited
Krylov shadow tomography: Efficient estimation of quantum Fisher information
Da-Jian Zhang, D. M. Tong
Efficiently estimating the quantum Fisher information (QFI) is pivotal in quantum information science but remains an outstanding challenge for large systems due to its high nonline…
quant-ph2025★ 3 cited
Retrieving maximum information of symmetric states from their corrupted copies
Zhao-Yi Zhou, Da-Jian Zhang
Using quantum measurements to extract information from states is a matter of routine in quantum science and technologies. A recent work [Phys. Rev. Lett. 133, 040202 (2024)] report…