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

Holleitner, A. W.; Qin, H.; Simmel, F.; Irmer, B.; Blick, R. H.; Kotthaus, J. P.; Ustinov, A. V.; Eberl, K.

Abstract:
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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Originalveröffentlichung
DOI: 10.1088/1367-2630/2/1/302
Scopus
Zitationen: 6
Web of Science
Zitationen: 9
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2000
Sprache Englisch
Identifikator ISSN: 1367-2630
KITopen-ID: 1000074392
Erschienen in New journal of physics
Band 2
Heft 1
Seiten 2
Nachgewiesen in Web of Science
Scopus
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