Controllable tunnel coupling and molecular states in a graphene double quantum dot
Publication
, Journal Article
Wang, LJ; Li, HO; Tu, T; Cao, G; Zhou, C; Hao, XJ; Su, Z; Xiao, M; Guo, GC; Chang, AM; Guo, GP
Published in: Applied Physics Letters
January 9, 2012
We have measured a graphene double quantum dot device with multiple electrostatic gates that are used to enhance control to investigate it. At low temperatures, the transport measurements reveal honeycomb charge stability diagrams which can be tuned from weak to strong interdot tunnel coupling regimes. We precisely extract a large interdot tunnel coupling strength for this system allowing for the observation of tunnel-coupled molecular states extending over the whole double dot. This clean, highly controllable system serves as an essential building block for quantum devices in a nuclear-spin-free world. © 2012 American Institute of Physics.
Duke Scholars
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Published In
Applied Physics Letters
DOI
ISSN
0003-6951
Publication Date
January 9, 2012
Volume
100
Issue
2
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences
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Wang, L. J., Li, H. O., Tu, T., Cao, G., Zhou, C., Hao, X. J., … Guo, G. P. (2012). Controllable tunnel coupling and molecular states in a graphene double quantum dot. Applied Physics Letters, 100(2). https://doi.org/10.1063/1.3676083
Wang, L. J., H. O. Li, T. Tu, G. Cao, C. Zhou, X. J. Hao, Z. Su, et al. “Controllable tunnel coupling and molecular states in a graphene double quantum dot.” Applied Physics Letters 100, no. 2 (January 9, 2012). https://doi.org/10.1063/1.3676083.
Wang LJ, Li HO, Tu T, Cao G, Zhou C, Hao XJ, et al. Controllable tunnel coupling and molecular states in a graphene double quantum dot. Applied Physics Letters. 2012 Jan 9;100(2).
Wang, L. J., et al. “Controllable tunnel coupling and molecular states in a graphene double quantum dot.” Applied Physics Letters, vol. 100, no. 2, Jan. 2012. Scopus, doi:10.1063/1.3676083.
Wang LJ, Li HO, Tu T, Cao G, Zhou C, Hao XJ, Su Z, Xiao M, Guo GC, Chang AM, Guo GP. Controllable tunnel coupling and molecular states in a graphene double quantum dot. Applied Physics Letters. 2012 Jan 9;100(2).
Published In
Applied Physics Letters
DOI
ISSN
0003-6951
Publication Date
January 9, 2012
Volume
100
Issue
2
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences