Sustainable entangled state of two qubits with time-dependent dipole-dipole interaction under coherent electromagnetic field influence

Alexander A. Biryukov; Mark A. Shleenkov

doi:10.1117/12.2267961

14 April 2017 Sustainable entangled state of two qubits with time-dependent dipole-dipole interaction under coherent electromagnetic field influence

Alexander A. Biryukov, Mark A. Shleenkov

Author Affiliations +

Proceedings Volume 10337, Saratov Fall Meeting 2016: Laser Physics and Photonics XVII; and Computational Biophysics and Analysis of Biomedical Data III; 103370B (2017) https://doi.org/10.1117/12.2267961
Event: Saratov Fall Meeting 2016: Fourth International Symposium on Optics and Biophotonics, 2016, Saratov, Russian Federation

Abstract

In this paper we study the quantum entanglement of two identical qubits which interact with electromagnetic field and each other by time-dependent dipole-dipole interaction. We develop original method in path integral approach for numerical calculation of density matrix and Peres-Horodecki parameter (the measure of qubits entanglement). By the use of obtained equations we investigate the dependence of quantum entanglement on dipole-dipole interaction amplitude and frequency as well as qubits phase difference. The results indicate on possibility of high-entanglement states exiting and long-time non-destructive control of them.

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Alexander A. Biryukov and Mark A. Shleenkov "Sustainable entangled state of two qubits with time-dependent dipole-dipole interaction under coherent electromagnetic field influence", Proc. SPIE 10337, Saratov Fall Meeting 2016: Laser Physics and Photonics XVII; and Computational Biophysics and Analysis of Biomedical Data III, 103370B (14 April 2017); https://doi.org/10.1117/12.2267961

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