Properties of hybrid entanglement among two flux qubits and a nitrogen-vacancy-center ensemble

被引：0
|
作者：
Liao, Qinghong [1 ,2 ]
Chen, Lin [1 ]
Liu, Xin [3 ]
Zhou, Nanrun [1 ]
机构：
[1] Nanchang Univ, Dept Elect Informat Engn, Nanchang 330031, Jiangxi, Peoples R China
[2] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China
[3] Univ Jinan, Sch Phys & Technol, Jinan 250022, Shandong, Peoples R China
来源：
LASER PHYSICS | 2018年 / 28卷 / 08期
基金：
中国国家自然科学基金;
关键词：
entanglement dynamics; concurrence; tripartite entanglement; QUANTUM STATES; PHOTONS;
D O I：
10.1088/1555-6611/aac7de
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate hybrid flux-nitrogen-vacancy (NV) entanglement in the system consisting of two flux qubits and an NV-center ensemble (NVE). The influence of the initial entanglement degree of the flux qubit C, the coupling strength between two flux qubits, the coupling strength between the flux qubit M and the NVE on the bipartite entanglement and the tripartite entanglement is discussed. The maximally bipartite entangled state and the maximally tripartite entangled state can be obtained under certain conditions. In addition, it is shown that the time of disentanglement of the hybrid quantum system can be controlled by adjusting the coupling strength between two flux qubits and the coupling strength between the flux qubit M and the NVE.
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页数：8
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