Quantum correlations and quantum Fisher information of two qubits in the presence of the time-dependent coupling effect

被引：7

作者：

Raffah, Bahaaudin ^{[1
]}

Abdel-Khalek, S. ^{[2
,3
]}

Berrada, K. ^{[4
]}

Khalil, E. ^{[2
]}

Al-Hadeethi, Yas ^{[1
]}

Almalky, Nawal ^{[1
]}

Wahiddin, M. R. B. ^{[5
,6
]}

机构：

[1] King Abdulaziz Univ, Dept Phys, Fac Sci, Jeddah 21438, Saudi Arabia

[2] Sohag Univ, Fac Sci, Math Dept, Sohag 82524, Egypt

[3] Taif Univ, Fac Sci, Math Dept, At Taif 21974, Saudi Arabia

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

[5] Int Islamic Univ IIUM, Kulliyyah ICT, Kuala Lumpur, Malaysia

[6] USIM, Cybersecur & Syst Unit, Islamic Sci Inst, Nilai 71800, Negeri Sembilan, Malaysia

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2020年 / 135卷 / 06期

关键词：

ENTANGLEMENT; DISCORD; SYSTEM; STATE; PAIR;

D O I：

10.1140/epjp/s13360-020-00423-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we consider two separate Jaynes-Cummings (JC) nodes with a nonidentical qubit-field system in the presence of dissipation terms. We reveal the influence of the time variation of the coupling terms on some important measures when the qubits are immersed in a vacuum. The density matrix for the two qubits initially in Bell states are obtained. The dynamical behavior of the quantum discord (QD), classical correlation (CC), qubit-qubit entanglement, and quantum Fisher information (QFI) is investigated. We explore the relationship among QD, CC, qubit-qubit entanglement, and QFI in the absence and presence of the dissipation effect during the time evolution. Furthermore, we show the main optimal conditions for obtaining a high level of correlation and coherence between the two qubits.

引用

页数：10

共 50 条

[41] The surprising persistence of time-dependent quantum entanglement
Kinsler, Paul
McCall, Martin W.
Oulton, Rupert F.
Clark, Alex S.
NEW JOURNAL OF PHYSICS, 2022, 24 (10):
[42] Quantum Computing Without Wavefunctions: Time-Dependent Density Functional Theory for Universal Quantum Computation
Tempel, David G.
Aspuru-Guzik, Alan
SCIENTIFIC REPORTS, 2012, 2
[43] Passing quantum correlations to qubits using any two-mode state
Paternostro, Mauro
Adesso, Gerardo
Campbell, Steve
PHYSICAL REVIEW A, 2009, 80 (06):
[44] Dynamical behavior of quantum correlations between two qubits coupled to an external environment
Jin-Long Wei
Xing-Li Li
Xi-Zheng Zhang
Jin-Liang Guo
Quantum Information Processing, 2016, 15 : 2425 - 2440
[45] Quantum correlations and parameter estimation for two superconducting qubits interacting with a quantized field
Berrada, K.
Abdel-Khalek, S.
Algarni, M.
Eleuch, H.
SCIENTIFIC REPORTS, 2024, 14 (01):
[46] Quantum Fisher Information in Two-Qubit Pure States
Liu, Wan-Fang
Zhang, Li-Hua
Li, Chun-Jie
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2010, 49 (10) : 2463 - 2475
[47] Time-Dependent Photon Correlations for Incoherently Pumped Quantum Dot Strongly Coupled to the Cavity Mode
Poshakinskiy, A. V.
Poddubny, A. N.
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2014, 118 (02) : 205 - 216
[48] Response of quantum Fisher information, variance entropy squeezing and entanglement to the intrinsic decoherence of two non-degenerate fields interacting with two qubits
Abdel-Khalek, S.
Khalil, E. M.
Mohamed, A-B A.
Abdel-Aty, M.
Besbes, H. R.
ALEXANDRIA ENGINEERING JOURNAL, 2020, 59 (06) : 5147 - 5154
[49] Quantum dynamics at finite temperature: Time-dependent quantum Monte Carlo study
Christov, Ivan P.
ANNALS OF PHYSICS, 2016, 371 : 368 - 378
[50] Entanglement, quantum correlations in a system of the two coupled atoms interacting with a thermal field under intensity-dependent coupling
Zhu, D. M.
Sachuerfu, S.
Su, S. L.
Gegentuya, B.
INDIAN JOURNAL OF PHYSICS, 2023, 97 (02) : 367 - 378

← 1 2 3 4 5 →