Mapping the chemical potential landscape of a triple quantum dot
| Autor: | Matthew A. Broome, S. K. Gorman, W. J. Baker, Michelle Y. Simmons, Thomas F. Watson, JG Joris Keizer, S. J. Hile |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics FOS: Physical sciences Non-equilibrium thermodynamics 02 engineering and technology Electron 021001 nanoscience & nanotechnology 01 natural sciences Electron transport chain System dynamics symbols.namesake Quantum dot Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences symbols Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology Hamiltonian (quantum mechanics) Quantum tunnelling |
| ISSN: | 2469-9950 |
| Popis: | We investigate the non-equilibrium charge dynamics of a triple quantum dot and demonstrate how electron transport through these systems can give rise to non-trivial tunnelling paths. Using a real-time charge sensing method we establish tunnelling pathways taken by particular electrons under well-defined electrostatic configurations. We show how these measurements map to the chemical potentials for different charge states across the system. We use a modified Hubbard Hamiltonian to describe the system dynamics and show that it reproduces all experimental observations. 7 pages, 3 figures |
| Databáze: | OpenAIRE |
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