A few-electron quadruple quantum dot in a closed loop

Abstract : We report the realization of a quadruple quantum dot device in a square-like configuration where a single electron can be transferred on a closed path free of other electrons. By studying the stability diagrams of this system, we demonstrate that we are able to reach the few-electron regime and to control the electronic population of each quantum dot with gate voltages. This allows us to control the transfer of a single electron on a closed path inside the quadruple dot system. This work opens the route towards electron spin manipulation using spin-orbit interaction by moving an electron on complex paths free of electrons
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Contributor : Romain Thalineau <>
Submitted on : Tuesday, September 4, 2012 - 5:17:03 PM
Last modification on : Friday, August 23, 2019 - 11:04:02 AM
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Romain Thalineau, Sylvain Hermelin, Andreas D. Wieck, Christopher Bäuerle, Laurent Saminadayar, et al.. A few-electron quadruple quantum dot in a closed loop. Applied Physics Letters, American Institute of Physics, 2012, 101, pp.103102. ⟨10.1063/1.4749811⟩. ⟨hal-00728052⟩

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