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arXiv · 1601.02485

Injection of a single electron from static to moving quantum dots

Benoit Bertrand·Sylvain Hermelin·Pierre-André Mortemousque·Shintaro Takada·Michihisa Yamamoto·Seigo Tarucha·Arne Ludwig·Andreas D. Wieck·Christopher Bäuerle·Tristan Meunier
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Abstract

We study the injection mechanism of a single electron from a static quantum dot into a moving quantum dot created in a long depleted channel with surface acoustic waves (SAWs). We demonstrate that such a process is characterized by an activation law with a threshold that depends on the SAW amplitude and the dot-channel potential gradient. By increasing sufficiently the SAW modulation amplitude, we can reach a regime where the transfer is unitary and potentially adiabatic. This study points at the relevant regime to use moving dots in quantum information protocols.

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Benoit Bertrand, Sylvain Hermelin, Pierre-André Mortemousque, Shintaro Takada, Michihisa Yamamoto, Seigo Tarucha, Arne Ludwig, Andreas D. Wieck, Christopher Bäuerle, Tristan Meunier. 2016-01-11. Injection of a single electron from static to moving quantum dots. https://doi.org/10.1088/0957-4484%2F27%2F21%2F214001

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