Symmetry Methods and Applications in Quantum Optics and Quantum Information

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: 30 November 2026 | Viewed by 1278

Special Issue Editors


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Guest Editor
Faculty of Sciences, Ibnou Zohr University, Agadir 80000, Morocco
Interests: optomagnomechanical system; open quantum system; quantum correlations; coherence; quantum thermodynamics; symmetry methods; representation theory; quantum metrology; quantum geometry; quantum teleportation

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Guest Editor
Faculty of Sciences, University Ibn Tofail, Kénitra 14000, Morocco
Interests: optomagnomechanical system; open quantum system; quantum correlations; coherence; quantum thermodynamics; symmetry methods; representation theory; quantum metrology; quantum geometry; quantum teleportation

Special Issue Information

Dear Colleagues,

Symmetry principles play a fundamental role in quantum science, especially in quantum optics and quantum information. They define the structure of quantum states and determine the behavior of entanglement and coherence. By revealing conservation laws and constraints, symmetries help classify quantum correlations, optimize state preparation, and protect information against noise, making them indispensable tools in both theoretical and experimental quantum research.

In recent decades, rapid progress in quantum information theory and quantum optics has highlighted the importance of symmetry-based approaches in a wide range of physical systems. This Special Issue is dedicated to exploring symmetry-driven phenomena in quantum systems, with a focus on emerging topics such as the quantification of coherence and quantum correlations in magnomechanical, optomechanical, and qubit platforms; magnomechanically induced transparency; photon-magnon-phonon blockade effects; symmetry methods; representation theory;  thermodynamic processes; quantum metrology; quantum geometry; and quantum teleportation in the quantum regime.

We especially encourage submissions that investigate how symmetry can be harnessed to design novel quantum information protocols, reveal new forms of entanglement, or deepen our understanding of quantum resources.

We warmly invite contributions from leading researchers across the fields of quantum optics, quantum information, condensed matter, and related disciplines.

Dr. Mohamed Amazioug
Prof. Dr. Mohammed Daoud
Guest Editors

Manuscript Submission Information

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Keywords

  • quantum correlations
  • optomagnomechanical system
  • open quantum system
  • coherence
  • quantum thermodynamics
  • symmetry methods
  • representation theory
  • quantum metrology
  • quantum geometry
  • quantum teleportation

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Published Papers (1 paper)

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Research

17 pages, 8128 KB  
Article
Quantum Fisher Information Probing a Quantum-Gas Cavity QED
by Lehan Zhu, Qian Wang and Zhaoxin Liang
Symmetry 2025, 17(11), 1918; https://doi.org/10.3390/sym17111918 - 9 Nov 2025
Viewed by 964
Abstract
Motivated by recent efforts in simulating nonequilibrium scenarios of the Dicke model in quantum-gas cavity QED, we investigate direct probing of the normal-to-superradiant quantum phase transition via Quantum Fisher Information (QFI). This transition represents a paradigmatic example of spontaneous symmetry breaking in quantum [...] Read more.
Motivated by recent efforts in simulating nonequilibrium scenarios of the Dicke model in quantum-gas cavity QED, we investigate direct probing of the normal-to-superradiant quantum phase transition via Quantum Fisher Information (QFI). This transition represents a paradigmatic example of spontaneous symmetry breaking in quantum optics, where the system’s Z2 symmetry is broken in the superradiant phase. At zero temperature, we derive analytical expressions for the QFI in the limit where the atomic transition frequency—scaled by the cavity frequency—tends to infinity. Furthermore, we analyze the impact of finite temperature on the QFI in both the thermodynamic limit and the regime of a finite but large number of atoms. All results demonstrate that the QFI exhibits a singularity as the coupling crosses the critical point—a clear signature of quantum criticality associated with spontaneous symmetry breaking. The divergent behavior of the QFI across the quantum phase transition directly relates to measuring dynamic susceptibilities using experimentally accessible Bragg spectroscopy tools and resources. Full article
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