Please use this identifier to cite or link to this item: https://scidar.kg.ac.rs/handle/123456789/8556
Title: Kraus Operators for a Pair of Interacting Qubits: a Case Study
Authors: Arsenijević, Momir
Jeknić-Dugić J.
Dugic, Miroljub
Journal: Brazilian Journal of Physics
Issue Date: 1-Jun-2018
Abstract: © 2018, Sociedade Brasileira de Física. The Kraus form of the completely positive dynamical maps is appealing from the mathematical and the point of the diverse applications of the open quantum systems theory. Unfortunately, the Kraus operators are poorly known for the two-qubit processes. In this paper, we derive the Kraus operators for a pair of interacting qubits, while the strength of the interaction is arbitrary. One of the qubits is subjected to the x-projection spin measurement. The obtained results are applied to calculate the dynamics of the entanglement in the qubits system. We obtain the loss of the correlations in the finite time interval; the stronger the inter-qubit interaction, the longer lasting entanglement in the system.
URI: https://scidar.kg.ac.rs/handle/123456789/8556
Type: article
DOI: 10.1007/s13538-018-0570-z
ISSN: 01039733
SCOPUS: 85046739980
Appears in Collections:Faculty of Science, Kragujevac

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