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Chin. Phys. B, 2012, Vol. 21(1): 017302    DOI: 10.1088/1674-1056/21/1/017302
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Quantum computation with two-dimensional graphene quantum dots

Li Jie-Sen(李杰森), Li Zhi-Bing (李志兵), and Yao Dao-Xin (姚道新)
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
Abstract  We study an array of graphene nano sheets that form a two-dimensional S=1/2 Kagome spin lattice used for quantum computation. The edge states of the graphene nano sheets are used to form quantum dots to confine electrons and perform the computation. We propose two schemes of bang-bang control to combat decoherence and realize gate operations on this array of quantum dots. It is shown that both schemes contain a great amount of information for quantum computation. The corresponding gate operations are also proposed.
Keywords:  graphene      quantum dot      quantum computation      Kagome lattice  
Received:  06 April 2011      Revised:  14 September 2011      Accepted manuscript online: 
PACS:  73.22.Pr (Electronic structure of graphene)  
  73.21.La (Quantum dots)  
  73.22.-f (Electronic structure of nanoscale materials and related systems)  
  74.25.Jb (Electronic structure (photoemission, etc.))  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074310), the National Basic Research Program of China (Grant No. 2007CB935501), and Fundamental Research Funds for the Central Universities of China.

Cite this article: 

Li Jie-Sen(李杰森), Li Zhi-Bing (李志兵), and Yao Dao-Xin (姚道新) Quantum computation with two-dimensional graphene quantum dots 2012 Chin. Phys. B 21 017302

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