Quantized current in a quantum-dot turnstile using oscillating tunnel barriers

P. Kouwenhoven, Leo; T. Charlie Johnson, A.; C. van der Vaart, N.; J. P. M. Harmans, C.; T. Foxon, C.

doi:10.1103/physrevlett.67.1626

Public

Quantized current in a quantum-dot turnstile using oscillating tunnel barriers

Published in Physical Review Letters • Sep 16, 1991

Authors:

Leo P. Kouwenhoven

A. T. Charlie Johnson

N. C. van der Vaart

Abstract

We have observed a quantized current in a lateral quantum dot, defined by metal gates in the two-dimensional electron gas (2DEG) of a GaAs/AlGaAs heterostructure. By modulating the tunnel barriers in the 2DEG with two phase-shifted rf signals, and employing the Coulomb blockade of electron tunneling...

Subject

Coulomb blockade

Quantum tunnelling

Turnstile

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