1999/10/31 by A W Holleitner, A. W. Holleitner, H Qin +13 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Heterojunction #Josephson effect #Microwave #Pi Josephson junction #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #Quantum dot #Quantum tunnelling #Rotational spectroscopy #Spectroscopy #cond-mat.mes-hall
paper · pdf · doi:10.1088/1367-2630/2/1/302
published as New Journal of Physics 2 (2000) 2.1-2.7 · 6 pages, 4 figures
openalex publication_date 2000/02/18 · arxiv created 2000/04/11 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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-AlO x /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.