Comparative study of the dynamics of entanglement and purity in two hybrid quantum systems under the effect of static noise
Unité de Recherche de Matière Condensée, d´Electronique Et de Traitement du Signal (URMACETS), Department of Physics, Dschang School of Sciences and Technology, University of Dschang, P.O. Box 67, Dschang, Cameroon
2 Department of Physics, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
3 Faculté D’agronomie Et Des Sciences Agricoles, Centre d’Etudes Et de Recherches en Agronomie Et en Biodiversité (CERAB), University of Dschang, P.O. 222, Dschang, Cameroon
Accepted: 7 September 2021
Published online: 20 September 2021
A comparative study of the dynamics of entanglement and purity in two hybrid quantum systems under the effect of a static noise is presented. The first system contains two qubits and one qutrit, while the second system contains one qubit and two qutrits. In addition, each system presents three configurations: the different, the common and the bipartite environment. In the bipartite environment, we have three cases depending on whether two subsystems are in the same environment and one subsystem in its environment alone. We found that in all these configurations, the same behavior is observed for negativity, purities and degrees of purity. The lower the purity, the more the degree of purity becomes and the system is less influenced by environmental corruption. Purity decreases more in the second system than in the first system and we can conclude that the second system preserves quantum properties better than the first.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021