| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Electron States in Parallel Double Quantum Dots with a Tunable Inter-Dot Coupling |
| CAO Gang, LI Hai-Ou, TU Tao, ZHOU Cheng, HAO Xiao-Jie, GUO Guang-Can, GUO Guo-Ping |
| Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 |
|
| Cite this article: |
|
CAO Gang, LI Hai-Ou, TU Tao et al 2009 Chin. Phys. Lett. 26 097302 |
|
|
|
|
Abstract We study the electron states on lateral double quantum dots coupled in parallel. The charge stability diagrams are given in terms of the gate voltages of both dots. We discover that the two electron states translate from separated states to coupled states continuously by increasing the inter-dot coupling strength. Our results demonstrate that the parallel-quantum-dot tunability bodes well for future quantum computing applications.
|
| Keywords:
73.23.Hk
03.67.Lx
73.21.La
|
|
|
Received: 24 April 2009
Published: 28 August 2009
|
|
| PACS: |
73.23.Hk
|
(Coulomb blockade; single-electron tunneling)
|
| |
03.67.Lx
|
(Quantum computation architectures and implementations)
|
| |
73.21.La
|
(Quantum dots)
|
|
|
|
|
|
[1]Loss D and DiVincenzo D P 1998 Phys. Rev. A 57120
[2] Hanson R, Kouwenhoven L P, Petta J R, Tarucha S andVandersypen L M K 2007 Rev. Mod. Phys. 79 1217
[3] Hanson R and Awschalom D 2008 Nature 453 1043
[4] Taylor J M, Dur W, Zoller P, Yacoby A, Marcus C M andLukin M D 2005 Phys. Rev. Lett. 94 236803
[5] Taylor J M, Engel H A, Dur W, Yacoby A, Marcus C M, ZollerP and Lukin M D 2005 Nature Physics 1 177
[6] Lin Z R, Guo G P, Tu T, Zhu F Y and Guo G C 2008 Phys. Rev. Lett. 101 230501
[7] Zhu F Y, Hao X J, Tu T, Guo G C and Guo G P 2009 Chin. Phys. Lett. 26 050301
[8] Duan L M and Guo G C 1997 Phys. Rev. Lett. 791953
[9] Lidar D A, Chuang I L and Whaley K B 1998 Phys. Rev.Lett. 81 2594
[10] Wu L A and Lidar D A 2002 Phys. Rev. Lett. 88207902
[11] Petta J R, Johnson A C, Taylor J M, Laird E A, Yacoby A,Lukin M D, Marcus C M, Hanson M P and Gossard A C 2005 Science 309 2180
[12] van der Wiel W G, De Franceschi S and Elzerman J M,Fujisawa T, Tarucha S and Kouwenhoven L P 2003 Rev. Mod. Phys. 75 1
[13] Koppens F H L, Folk J A, Elzerman J M, Hanson R, vanBeveren L H W, Vink I T, Tranitz H P, Wegscheider W, Kouwenhoven L Pand Vandersypen L M K 2005 Science 309 1346
[14] Marcus C M, McEuen P L, Tarucha S, Westervelt R M andWingreen N 1997 NATO ASI Conference Proceedings ed Sohn L L,Kouwenhoven L P and Schon G (Kluwer, Dordrecht)
[15] Lv R and Liu Z R 2007 Chin. Phys. Lett. 24195 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
