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Author  |
Liu, X.Z.; Yang, Y.H.; Gessner, M.; Smerzi, A.; Li, W.D.; Yang, X.; Luo, M.X. |
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Title |
Photonic Metrology with Hierarchic Quantum Frequentist Bounds |
Type |
Journal Article |
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Year |
2025 |
Publication |
Advanced Photonics Research |
Abbreviated Journal |
Adv. Photon. Res. |
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Volume |
6 |
Issue |
12 |
Pages |
e202500199 - 7pp |
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Keywords |
photonic experiment; quantum frequentist bounds; quantum metrology |
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Abstract |
Quantum metrology establishes fundamental precision limits for parameter estimation, yet standard Quantum Cram & eacute;r-Rao Bound (QCRB) becomes insufficient in the finite-data regime. In this article, the QCRB is systematically tighten using a hybrid classical-quantum framework by incorporating generalized unbiasedness constraints through test observables. These frequentist bounds form a hierarchy converging asymptotically to the QCRB as more measurements are performed. These hierarchical frequentist bounds are validated for single-qubit phase estimation on a photonic platform. |
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Address |
[Liu, Xin-Zhu; Yang, Yan-Han; Yang, Xue; Luo, Ming-Xing] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China, Email: manuel.gessner@uv.es; |
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Publisher |
Wiley |
Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2699-9293 |
ISBN |
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Notes |
WOS:001607394300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6920 |
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