Entanglement sudden death with quasi-static approximation
School of Natural Sciences, National University of Sciences and Technology, H-12, Islamabad, Pakistan
2 Instituto Superior Técnico, University of Lisbon and Instituto de Telecomunicações, Torre Norte, Av. Rovisco Pais 1, Lisbon, Portugal
Accepted: 22 January 2022
Published online: 7 February 2022
In this paper, we investigate the entanglement sudden death with a two-level system and plasmonic surface. We determine the collective damping and qubit–qubit interaction by employing the quasi-static approximation. To illustrate this approach, we first derive the Markovian master equation in the Lindblad form using frequency-domain Green function approach. The Wootter’s concurrence with Dicke states is used to measure the entanglement between two dipoles (two two-level systems). This approach enabled the present scheme to be applied in the field of quantum information theory.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022