Microwave spectroscopy on a double quantum dot with an on-chip Josephson oscillator

被引：13

作者：

Holleitner, AW

Qin, H

Simmel, F

Irmer, B

Blick, RH

Kotthaus, JP

Ustinov, AV

Eberl, K

机构：

[1] Univ Munich, Ctr Nanosci, D-80539 Munich, Germany

[2] Univ Munich, Sekt Phys, D-80539 Munich, Germany

[3] Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany

[4] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

NEW JOURNAL OF PHYSICS | 2000年 / 2卷

关键词：

D O I：

10.1088/1367-2630/2/1/302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements on microwave spectroscopy on a double quantum dot with an on-chip microwave source. The quantum dots are realized in the two-dimensional electron gas of an AlGaAs/GaAs heterostructure and are weakly coupled in series by a tunnelling barrier forming an 'ionic' molecular state. We employ a Josephson oscillator formed by a long Nb/Al-AlOx/Nb junction as a microwave source. We find photon-assisted tunnelling sidebands induced by the Josephson oscillator, and compare the results with those obtained using an externally operated microwave source.

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页码：21 / 27

页数：7

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