Manipulation of a Single Charge in a Double Quantum Dot

J. R. Petta, A. C. Johnson, C. M. Marcus, M. P. Hanson, and A. C. Gossard
Phys. Rev. Lett. 93, 186802 – Published 27 October 2004

Abstract

We manipulate a single electron in a fully tunable double quantum dot using microwave excitation. Under resonant conditions, microwaves drive transitions between the (1,0) and (0,1) charge states of the double dot. Local quantum point contact charge detectors enable a direct measurement of the photon-induced change in occupancy of the charge states. From charge sensing measurements, we find T116ns and a lower bound estimate for T2* of 400 ps for the charge two-level system.

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  • Received 8 August 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.186802

©2004 American Physical Society

Authors & Affiliations

J. R. Petta1, A. C. Johnson1, C. M. Marcus1, M. P. Hanson2, and A. C. Gossard2

  • 1Department of Physics, Harvard University, Cambridge, MA 02138, USA
  • 2Materials Department, University of California, Santa Barbara, CA 93106, USA

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Issue

Vol. 93, Iss. 18 — 29 October 2004

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