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Strongly-coupled Josephson junction array for simulation of frustrated one-dimensional spin models
DU Lianghui,ZHOU Xingxiang,HAN Yongjian,GUO Guangcan,Zhou Zhengwei *
Key Laboratory of Quantum Information and Departmentof Optics and Optical Engineering, University of Science andTechnology of China, Chinese Academy of Sciences, HeFei 230026
*Correspondence author
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Subject:
Funding: Research Fund for the Doctoral Program of Higher Education of China (No.Grant No. 20103402110024), National Natural Science Foundation of China(No.Grant Nos. 11174270,60836001,60921091), National Basic Research Program of China(No.Grant Nos.2011CB921204,2011CBA00200)
Opened online:21 August 2012
Accepted by: none
Citation: DU Lianghui,ZHOU Xingxiang,HAN Yongjian.Strongly-coupled Josephson junction array for simulation of frustrated one-dimensional spin models[OL]. [21 August 2012] http://en.paper.edu.cn/en_releasepaper/content/4486683
 
 
This paper study the capacitance-coupled Josephson junction array beyond thesmall-coupling limit. When the scale of the system islarge, its Hamiltonian can be obtained without the small-couplingapproximation and the system can be used to simulate stronglyfrustrated one-dimensional Ising spin problems. To engineer thesystem Hamiltonian for an ideal theoretical model, we apply adynamical decoupling technique to eliminate undesirable couplings inthe system. Using a 6-site junction array as an example, numerical evaluation of the system shows that it exhibits importantcharacteristics of the frustrated spin model.
Keywords:Quantum simulation; Josephson junction array; Frustrated Ising model; Dynamical decoupling technique
 
 
 

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