Quantum correlations and non-classical properties for two superconducting qubits interacting with a quantized field in the context of deformed Heisenberg algebra

被引：13

作者：

Abdel-Khalek, S. ^{[1
,4
]}

Berrada, K. ^{[2
]}

Aldaghfag, Shatha A. ^{[3
]}

机构：

[1] Taif Univ, Coll Sci, Dept Math & Stat, POB 11099, At Taif 21944, Saudi Arabia

[2] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Phys Dept, Riyadh, Saudi Arabia

[3] Princess Nourah Bint Abdulrahman Univ, Coll Sci, Dept Phys, Riyadh, Saudi Arabia

[4] Sohag Univ, Fac Sci, Math Dept, Sohag, Egypt

来源：

CHAOS SOLITONS & FRACTALS | 2021年 / 143卷

关键词：

Superconducting qubits; Nonlinear field; Time-varying coupling; Entanglement; Fisher information;

D O I：

10.1016/j.chaos.2020.110466

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

In the present work, we examine qualitatively the entanglement and parameter estimation in a two superconducting qubits (SC-qubits) coupled to a nonlinear field in the existence of time-varying coupling. We show the effects of the nonlinearity of the field and time-varying coupling on the evolution of such quantities of current interests by considering the von Neumann entropy, entanglement of formation and quantum Fisher information (QFI). Moreover, we explain the relationship between the information quantifiers during the dynamics. The obtained results can suggest new prospects to explore and understand the nonlinearity phenomena on the behaviour of the information quantifiers in SC-qubits. (c) 2020 Elsevier Ltd. All rights reserved.

引用

页数：8

共 83 条

[1] Effect of the time-dependent coupling on a superconducting qubit-field system under decoherence: Entanglement and Wehrl entropy [J].