Manipulation of a single charge in a double quantum dot

被引：375
|
作者：
Petta, JR [1 ]
Johnson, AC
Marcus, CM
Hanson, MP
Gossard, AC
机构：
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 18期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.93.186802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We manipulate a single electron in a fully tunable double quantum dot using microwave excitation. Under resonant conditions, microwaves drive transitions between the (1,0) and (0,1) charge states of the double dot. Local quantum point contact charge detectors enable a direct measurement of the photon-induced change in occupancy of the charge states. From charge sensing measurements, we find T(1) similar to 16 ns and a lower bound estimate for T(2)(*) of 400 ps for the charge two-level system.
引用
收藏
页码：186802 / 1
页数：4
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