Interference in a quantum dot molecule embedded in a ring interferometer

被引：41
|
作者：
Ihn, Thomas [1 ]
Sigrist, Martin
Ensslin, Klaus
Wegscheider, Werner
Reinwald, Matthias
机构：
[1] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland
[2] Univ Regensburg, Inst Expt & Angew Phys, D-8400 Regensburg, Germany
来源：
NEW JOURNAL OF PHYSICS | 2007年 / 9卷
关键词：
D O I：
10.1088/1367-2630/9/5/111
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Interference experiments are presented involving electronic quantum transport through an artificial quantum dot molecule in the Coulomb blockade regime embedded in a ring interferometer. Full tunability and the high stability of the structure allowed the transmission phase through this system, spin-related interference phenomena, and Fano-type interference to be studied. When a part of the interferometer is itself tuned into the Coulomb blockade regime, a phase-coherently coupled triple dot system can be investigated. The experiments demonstrate the feasibility of complex quantum circuits with a high degree of phase-coherence.
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页数：17
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