Long-time protection of thermal correlations in a hybrid-spin system under random telegraph noise

Fadwa Benabdallah, Atta Ur Rahman, Saeed Haddadi, and Mohammed Daoud
Phys. Rev. E 106, 034122 – Published 15 September 2022

Abstract

The engineering features of transmitting mediums and their impact on different characteristics of a quantum system play a significant role in the efficient performance of nonlocal protocols. For this purpose, the dynamics of open quantum systems and coupling mediums remain a pathway. In this work, we investigate the dynamics of quantum correlations using negativity, uncertainty-induced nonlocality, and local quantum Fisher information in a hybrid qubit-qutrit thermal state when coupled with a magnetic field and influenced by random telegraph noise. Different features of the system parameters are taken into account while designing longer preservation of qubit-qutrit correlations. We show that the temperature has an inverse impact on the initial values of negativity, uncertainty-induced nonlocality, and local quantum Fisher information. When the magnetic field is characterized by different features, the entanglement, nonlocality, and Fisher information show a variety of dynamical maps, assuring their distinct nature. In addition, the qubit-qutrit correlations undergo repeated revivals when the configuration is restricted to the non-Markovian regime. On the other hand, an exponential drop with a single minimum is observed in the Markovian regime of the coupled field. Most importantly, our findings reveal that the present coupled fields have several advantages that can be leveraged to generate the optimal degree of entanglement, nonlocality, and local quantum Fisher information preservation in quantum dynamical maps.

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  • Received 18 April 2022
  • Accepted 29 August 2022

DOI:https://doi.org/10.1103/PhysRevE.106.034122

©2022 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyStatistical Physics & Thermodynamics

Authors & Affiliations

Fadwa Benabdallah1, Atta Ur Rahman2, Saeed Haddadi3,4,*, and Mohammed Daoud5,6

  • 1LPHE-Modeling and Simulation, Faculty of Sciences, Mohammed V University in Rabat, Morocco
  • 2Key Laboratory of Aerospace Information Security and Trusted Computing, Ministry of Education, School of Cyber Science and Engineering, Wuhan University, Wuhan 430072, China
  • 3Faculty of Physics, Semnan University, P.O. Box 35195-363, Semnan, Iran
  • 4Saeed's Quantum Information Group, P.O. Box 19395-0560, Tehran, Iran
  • 5Department of Physics, Faculty of Sciences, Ibn Tofail University, Kénitra, Morocco
  • 6Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151 Trieste, Italy

  • *Corresponding author: saeed@ssqig.com

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Issue

Vol. 106, Iss. 3 — September 2022

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