Dynamic generation of multi-qubit entanglement in the ultrastrong-coupling regime

被引：4
|
作者：
Liu, Xin [1 ]
Liao, Qinghong [2 ]
Fang, Guangyu [3 ]
Liu, Shutian [3 ]
机构：
[1] Univ Jinan, Sch Phys & Technol, Jinan 250022, Shandong, Peoples R China
[2] Nanchang Univ, Dept Elect Informat Engn, Nanchang 330031, Jiangxi, Peoples R China
[3] Harbin Inst Technol, Dept Phys, Harbin 150001, Heilongjiang, Peoples R China
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1038/s41598-019-39265-4
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We propose a dynamic evolution protocol for generating multi-qubit GHZ states in the ultrastrong-coupling regime of circuit QED. By varying the time length of sequences, the protocol works for any coupling strength g/omega(r)>= 0.25. The time for generating the GHZ states in our protocol can be in the subnanoseconds. By taking into account realistic parameters of circuit QED, the degeneracy of fidelity due to decoherence can be as low as 0.02%.
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页数：8
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