Dynamics of quantum discord of two coupled spin-1/2’s subjected to time-dependent magnetic fields

Antonino Messina, Roberto Grimaudo, Aurelian Isar, Tatiana Mihaescu, Roberto Grimaudo, Iulia Ghiu, Antonino Messina

Risultato della ricerca: Articlepeer review

7 Citazioni (Scopus)

Abstract

We describe the dynamics of quantum discord of two interacting spin-1/2’s subjected to controllable time-dependent magnetic fields. The exact time evolution of discord is given for various input mixed states consisting of classical mixtures of two Bell states. The quantum discord manifests a complex oscillatory behaviour in time and is compared with that of quantum entanglement, measured by concurrence. The interplay of the action of the time-dependent magnetic fields and the spin-coupling mechanism in the occurrence and evolution of quantum correlations is examined in detail.
Lingua originaleEnglish
Numero di pagine11
RivistaResults in Physics
Volume13
Stato di pubblicazionePublished - 2019

All Science Journal Classification (ASJC) codes

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