Kataoka, M;
Giblin, SP;
Fletcher, JD;
Johnson, N;
Humphreys, DA;
See, P;
Pepper, M;
... Ritchie, DA; + view all
(2018)
Single-Hot-Electron Wave Packets for Quantum Electrical Metrology.
In:
Proceedings of 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
IEEE: Paris, France.
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Abstract
Using a recently-developed time-of-flight measurement technique with 1 ps time resolution and electron-energy spectroscopy, we developed a method to measure the longitudinal-optical-phonon emission rate of hot electrons travelling along a depleted edge of a quantum Hall bar. A comparison of the experimental results to a single-particle model implies that the main scattering mechanism involves a two-step process via intra-Landau-level transition. We show this scattering can be suppressed by controlling the edge potential profile, and a scattering length > 1 mm can be achieved, allowing the use of this system for scalable single-electron device applications.
| Type: | Proceedings paper |
|---|---|
| Title: | Single-Hot-Electron Wave Packets for Quantum Electrical Metrology |
| Event: | Conference on Precision Electromagnetic Measurements (CPEM) - 2018 |
| Location: | Paris, FRANCE |
| Dates: | 08 July 2018 - 13 July 2018 |
| ISBN-13: | 978-1-5386-0973-6 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/CPEM.2018.8501246 |
| Publisher version: | https://doi.org/10.22323/1.330.000110.1109/CPEM.20... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10066084 |
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