Photon assisted long-range tunneling
Abstract
We analyze long-range transport through an ac driven triple quantum dot with a single electron. Resonant transitions between separated and detuned dots are mediated by the exchange of n photons with the time-dependent field. An effective model is proposed in terms of second order (cotunneling) processes which dominate the long-range transport between the edge quantum dots. The ac field renormalizes the inter dot hopping, modifying the level hybridization. It results in a non-trivial behavior of the current with the frequency and amplitude of the external ac field.
- Publication:
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Journal of Applied Physics
- Pub Date:
- March 2015
- DOI:
- 10.1063/1.4913834
- arXiv:
- arXiv:1408.4923
- Bibcode:
- 2015JAP...117k2808G
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Soft Condensed Matter;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 7 pages, 4 figures