Quantum correlations and parameter estimation for two superconducting qubits interacting with a quantized field

Autor:	K. Berrada, S. Abdel-Khalek, M. Algarni, H. Eleuch
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Superconducting qubit Kerr medium Ising interaction Entanglement Linear entropy Parameter estimation Medicine Science
Zdroj:	Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Druh dokumentu:	article
ISSN:	2045-2322
DOI:	10.1038/s41598-024-62894-3
Popis:	Abstract In the present manuscript, we introduce a quantum system of two superconducting qubits (S–Qs) interacting with a quantized field under the influence of the Kerr nonlinear medium and Ising interaction. We formulate the Hamiltonian of the quantum model and determine the density operator of whole quantum system as well as quantum subsystems. We examine the dynamics of the quantumness measures for subsequent times including the S–Qs entanglement, S–Qs-field entanglement and quantum Fisher information in relation to the system parameters. Finally, we display the connection among the measures of quantumness during the time evolution.
Databáze:	Directory of Open Access Journals
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