Counting statistics in an InAs nanowire quantum dot with a vertically coupled charge detector
| Autor: | Choi, Theodore, Ihn, Thomas, Schön, Silke, Ensslin, Klaus |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Appl. Phys. Lett. 100, 072110 (2012) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.3687198 |
| Popis: | A gate-defined quantum dot in an InAs nanowire is fabricated on top of a quantum point contact realized in a two-dimensional electron gas. The strong coupling between these two quantum devices is used to perform time-averaged as well as time-resolved charge detection experiments for electron flow through the quantum dot. We demonstrate that the Fano factor describing shot noise or time-correlations in single-electron transport depends in the theoretically expected way on the asymmetry of the tunneling barriers even in a regime where the thermal energy $k_\mathrm{B}T$ is comparable to the single-particle level spacing in the dot. Comment: 4 pages, 3 figures |
| Databáze: | arXiv |
| Externí odkaz: |
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