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arXiv · 1907.04263

Genuine multipartite correlations in Dicke Superradiance

Susane Calegari·Antônio C. Lourenço·Gabriel T. Landi·Eduardo I. Duzzioni
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Abstract

A thorough understanding of the structure of correlations in multipartite systems is essential for the success of most quantum information processing applications. The problem, however, quickly becomes non-trivial as the size of the multipartition increases. With this motivation in mind, in this paper, we put forth a detailed study of genuine multipartite correlations (GMCs) in the Dicke model of superradiance. We compute all genuine $k$-partite correlations for Dicke states with arbitrary excitations and use these results to characterize the evolution of multipartite correlations during the superradiant dynamics. Non-trivial effects in the way correlations in Dicke states are distributed between the multiple parts are found, showing strong finite-size effects. We also employ the concept of weaving to classify how multipartite correlations scale with the number of particles in the system.

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Susane Calegari, Antônio C. Lourenço, Gabriel T. Landi, Eduardo I. Duzzioni. 2019-07-09. Genuine multipartite correlations in Dicke Superradiance. https://doi.org/10.1103/physreva.101.052310

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