Howe, H;
Blumenthal, M;
Beere, HE;
Mitchell, T;
Ritchie, DA;
Pepper, M;
(2021)
Single-electron pump with highly controllable plateaus.
Applied Physics Letters
, 119
(15)
, Article 153102. 10.1063/5.0067428.
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Abstract
Future quantum based electronic systems will demand robust and highly accurate on-demand sources of current. The ultimate limit of quantized current sources is a highly controllable device that manipulates individual electrons. We present a GaAs single-electron pump, where electrons are pumped through a one-dimensional split-gate saddle point confinement potential, which show quantized plateaus with length and width that can be independently tuned with the application of a source-drain bias and RF amplitude. The plateaus can be over two orders of magnitude longer than conventional pumps, and flatness improves with the application of a source-drain bias.
| Type: | Article |
|---|---|
| Title: | Single-electron pump with highly controllable plateaus |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0067428 |
| Publisher version: | https://doi.org/10.1063/5.0067428 |
| Language: | English |
| Additional information: | Copyright 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Doping, Semiconductors, Charge coupled devices, Electrostatics, Digital-to-analog converter, Quantum dots, Electron transfer, Metrology, Field effect transistors |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10136803 |
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