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APS » Journals » Phys. Rev. Lett. » Volume 81 » Issue 3
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Phys. Rev. Lett. 81, 689–692 (1998)

Complex Broadband Millimeter Wave Response of a Double Quantum Dot: Rabi Oscillations in an Artificial Molecule

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Robert H. Blick*, Daniel W. van der Weide†, Rolf J. Haug‡, and Karl Eberl
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany

Received 16 September 1996; revised 28 July 1997; published in the issue dated 20 July 1998

See accompanying Physics Focus

Complex photoconductive measurements of the current through a double quantum dot enable us to monitor effects of coherent electron transport in the suppression of the rabi oscillations of this “artificial molecule.” The current is induced by a new broadband millimeter wave source functioning as a heterodyne interferometer, which consists of two nonlinear transmission lines generating harmonic outputs in the range 2–400 GHz, and, being coherent, allows tracking the induced current through the sample in both magnitude and phase.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.689
DOI:
10.1103/PhysRevLett.81.689
PACS:
73.40.Gk, 07.57.Yb, 95.85.Bh

*Present address: Sektion Physik der Ludwig Maximilians Universität, Geschwister Scholl Platz 1, 80539 München, Germany.Email address: robert.blick@physik.uni-muenchen.de

†Present address: Electrical Engineering Department, 140 Evans Hall, University of Delaware, Newark, DE 19716.

‡Present address: Universität Hannover, Institut für Festkörperphysik, Appelstr. 2, 30167 Hannover, Germany.

 
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