Quantum Fisher information of N-level atoms under the influence of the thermal field and the Stark effect by S. Jamal Anwar, M. Ibrahim, M. Khalid Khan, Haifa S. Alqannas, S. Abdel-Khalek

“…It is observed that a larger value of the SS parameter influences the quantum Fisher information (QFI) of 5-level atomic systems and increases the value of QFI of the 5-level atoms compared to 3- and 4-level atomic systems. …”
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Quantum metrology using quantum combs and tensor network formalism by Stanisław Kurdziałek, Piotr Dulian, Joanna Majsak, Sagnik Chakraborty, Rafał Demkowicz-Dobrzański

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Weak measurements enhancing the quantum information facets of a driven Unruh–DeWitt detector by Jia-Ling Xie, Jia-Ling Xie, Cheng-Jie Zhu, Jia Tan, Xiang Hao

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A comparative study of LQU and LQFI in general qubit-qutrit axially symmetric states by M. A. Yurischev, Saeed Haddadi, Mehrdad Ghominejad

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Metrological Advantages in Seeded and Lossy Nonlinear Interferometers by Jasper Kranias, Guillaume Thekkadath, Khabat Heshami, Aaron Z. Goldberg

“…The quantum Fisher information (QFI) bounds the sensitivity of a quantum measurement, heralding the conditions for quantum advantages when compared with classical strategies. …”
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On Quantum Natural Policy Gradients by Andre Sequeira, Luis Paulo Santos, Luis Soares Barbosa

“…This article delves into the role of the quantum Fisher information matrix (FIM) in enhancing the performance of parameterized quantum circuit (PQC)-based reinforcement learning agents. …”
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Quantum limits of parameter estimation in long-baseline imaging by Aqil Sajjad, Michael R. Grace, Saikat Guha

“…As an example, we show an explicit calculation of the quantum Fisher information (QFI) for estimating the angular separation between two-point emitters using two identical apertures separated by a baseline distance. …”
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