Journal article
Genuine k-partite correlations and entanglement in the ground state of the Dicke model for interacting qubits
Annals of physics, Vol.482, 170196
11/2025
DOI: 10.1016/j.aop.2025.170196
Abstract
Here, we calculate and study correlations of the Dicke model in the presence of qubit-qubit interaction. Whereas the analysis of correlations among its subsystems is essential for the understanding of corresponding critical phenomena and for performing quantum information tasks, the majority of correlation measures are restricted to bipartitions due to the inherent challenges associated with handling multiple partitions. To circunvent this we employ the calculation of Genuine Multipartite Correlations (GMC) based on the invariance of our model under particle permutation. We then quantify the correlations within each subpart of the system, as well as the percentage contribution of each GMC of order , highlighting the many-body behaviors for different regimes of parameters. Additionally, we show that GMC signal both first- and second-order quantum phase transitions present in the model. Furthermore, as GMC encompasses both classical and quantum correlations, we employ Quantum Fisher Information (QFI) to detect genuine multipartite entanglement. Ultimately, we map the Dicke model with interacting qubits to spin in solids interacting with a quantum field of magnons, thus demonstrating a potential experimental realization of this model.
Details
- Title: Subtitle
- Genuine k-partite correlations and entanglement in the ground state of the Dicke model for interacting qubits
- Creators
- Antônio C. Lourenço - Universidade Federal de Santa CatarinaDenis R. Candido - University of IowaEduardo I. Duzzioni - Universidade Federal de Santa Catarina
- Resource Type
- Journal article
- Publication Details
- Annals of physics, Vol.482, 170196
- DOI
- 10.1016/j.aop.2025.170196
- ISSN
- 0003-4916
- eISSN
- 1096-035X
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Grant note
- Brazilian funding agencies Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)Fundacao de Amparo a Pesquisa e Inovacao do Estado de Santa Catarina (FAPESC)Instituto Nacional de Ciencia e Tecnologia de Informacao Quantica (CNPq): INCT-IQ (465469/2014-0 CNPq: 409673/2022-6 U.S. Department of Energy, Office of Science BES: DE-SC0023393
The authors acknowledge financial support from the Brazilian funding agencies Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) , Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) , Fundacao de Amparo a Pesquisa e Inovacao do Estado de Santa Catarina (FAPESC) , and Instituto Nacional de Ciencia e Tecnologia de Informacao Quantica (CNPq INCT-IQ (465469/2014-0) ) . EID thanks to CNPq grant number 409673/2022-6. D.R.C. acknowledges support from the U.S. Department of Energy, Office of Science BES Award No. DE-SC0023393.
- Language
- English
- Electronic publication date
- 08/2025
- Date published
- 11/2025
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984949521402771
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