Journal of East China Normal University(Natural Science) >

2024 , Vol. 2024 >Issue 3: 128 - 135

DOI: https://doi.org/10.3969/j.issn.1000-5641.2024.03.014

Quantum Physics and Quantum Information Processing

Quantum parameter estimation and initial state optimization based on the Jaynes-Cummings model

  • Liwen QIAO ,
  • Jiaxin PENG ,
  • Baiqiang ZHU ,
  • Keye ZHANG
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  • School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China

Received date: 2023-04-21

  Online published: 2024-05-25

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Abstract

Quantum parameter estimation is a powerful theoretical tool for inferring unknown parameters in physical models from experimental data. The Jaynes-Cummings model is widely used in quantum optics, and describes the interaction between a two-level atom and a single-mode quantum optical field. Systematic research was performed on the estimation precision of atom-light coupling strength “g” in this model and the initial state was identified by which the estimation can achieve the best precision. Our results can improve the precision of quantum measurement with the Jaynes-Cummings model, and can be used for quantum metrology with other hybrid quantum systems.

Key words： quantum Fisher information; Jaynes–Cummings model; parameter estimation theory

Cite this article

Liwen QIAO , Jiaxin PENG , Baiqiang ZHU , Keye ZHANG . Quantum parameter estimation and initial state optimization based on the Jaynes-Cummings model[J]. Journal of East China Normal University(Natural Science), 2024 , 2024(3) : 128 -135 . DOI: 10.3969/j.issn.1000-5641.2024.03.014

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