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Coherent beam splitting of flying electrons driven by a surface acoustic wave
- Source :
- Phys. Rev. Lett. 126, 070501 (2021)
- Publication Year :
- 2020
-
Abstract
- We develop a coherent beam splitter for single electrons driven through two tunnel-coupled quantum wires by surface acoustic waves (SAWs). The output current through each wire oscillates with gate voltages to tune the tunnel-coupling and potential difference between the wires. This oscillation is assigned to coherent electron tunneling motion that can be used to encode a flying qubit and is well reproduced by numerical calculations of time evolution of the SAW-driven single electrons. The oscillation visibility is currently limited to about 3%, but robust against decoherence, indicating that the SAW-electron can serve as a novel platform for a solid-state flying qubit.<br />Comment: 5+3 pages, 4+2 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 126, 070501 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2004.11553
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.126.070501