Coulomb sensing of single ballistic electrons
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866913621246738432 |
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| author | Fletcher, J. D. Park, W. See, P. Griffiths, J. P. Jones, G. A. C. Farrer, I. Ritchie, D. A. Sim, H. -S. Kataoka, M. |
| author_facet | Fletcher, J. D. Park, W. See, P. Griffiths, J. P. Jones, G. A. C. Farrer, I. Ritchie, D. A. Sim, H. -S. Kataoka, M. |
| contents | While ballistic electrons are a key tool for applications in sensing and flying qubits, sub-nanosecond propagation times and complicated interactions make control of ballistic single electrons challenging. Recent experiments have revealed Coulomb collisions of counterpropagating electrons in a beam splitter, giving time resolved control of interactions between single electrons. Here we use remote Coulomb interactions to demonstrate a scheme for sensing single ballistic electrons. We show that interactions are highly controllable via electron energy and emission timing. We use a weakly-coupled `sensing' regime to characterise the nanoscale potential landscape of the beam splitter and the strength of the Coulomb interaction, and show multi-electron sensing with picosecond resolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15789 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coulomb sensing of single ballistic electrons Fletcher, J. D. Park, W. See, P. Griffiths, J. P. Jones, G. A. C. Farrer, I. Ritchie, D. A. Sim, H. -S. Kataoka, M. Mesoscale and Nanoscale Physics Quantum Physics While ballistic electrons are a key tool for applications in sensing and flying qubits, sub-nanosecond propagation times and complicated interactions make control of ballistic single electrons challenging. Recent experiments have revealed Coulomb collisions of counterpropagating electrons in a beam splitter, giving time resolved control of interactions between single electrons. Here we use remote Coulomb interactions to demonstrate a scheme for sensing single ballistic electrons. We show that interactions are highly controllable via electron energy and emission timing. We use a weakly-coupled `sensing' regime to characterise the nanoscale potential landscape of the beam splitter and the strength of the Coulomb interaction, and show multi-electron sensing with picosecond resolution. |
| title | Coulomb sensing of single ballistic electrons |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2412.15789 |