Observation of Photon-Assisted Tunneling through a Quantum Dot

L. P. Kouwenhoven; S. Jauhar; J. Orenstein; P. L. McEuen; Y. Nagamune; J. Motohisa; H. Sakaki

doi:10.1103/PhysRevLett.73.3443

Observation of Photon-Assisted Tunneling through a Quantum Dot

L. P. Kouwenhoven, S. Jauhar, J. Orenstein, P. L. McEuen, Y. Nagamune, J. Motohisa, and H. Sakaki

Phys. Rev. Lett. 73, 3443 – Published 19 December 1994

Abstract

We have measured dc transport through a GaAs/AlGaAs quantum dot in the presence of a microwave signal of frequency $f$ . We find features related to the photon energy $hf$ whose positions in gate voltage are independent of the microwave power buy vary linearly with frequency. The measurements demonstrate photon-assisted tunneling in the mesoscopic regime. A comparison is made with a model that extends Coulomb blockade theory to include photon-assisted tunneling.

Received 25 July 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.3443

Authors & Affiliations

L. P. Kouwenhoven^*, S. Jauhar, J. Orenstein, and P. L. McEuen

Department of Physics, University of California at Berkeley,
Materials Science Division, Lawrence Berkeley Laboratory, Mail stop 2-200, Berkeley, California 94720

Y. Nagamune, J. Motohisa^†, and H. Sakaki

Research Center for Advanced Science and Technology, University of Tokyo 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan

^*Present address: Department of Applied Physics, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands.
^†Present address: Research Center for Interface Quantum Electronics, Hokkaido University, North 13 West 8, Sapporo 060, Japan.