Year: 2000
Type: article
Abstract: We present the experimental realization of different approaches to increase the amount of quantized current which is driven by surface acoustic waves through split-gate structures in a two-dimensional electron gas. Samples with driving frequencies of up to 4.7 GHz have been fabricated without a deterioration of the precision of the current steps, and a parallelization of two channels with correspondingly doubled current values have been achieved. We discuss theoretical and technological limitations of these approaches for metrological applications as well as for quantum logics.
Source: Applied Physics Letters
DOI: 10.1063/1.1319190
Authors: J. Ebbecke, G. Bastian, M. Blöcker, K. Pierz, F. J. Ahlers
Institution: Physikalisch-Technische Bundesanstalt
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2073758197