The goal of gaining control over single electrons in solids is the driving force behind much research in contemporary physics and today it is possible to confine and manipulate single electrons in quantum dots and other semiconductor nanostructures in a controlled way. This fact makes these systems naturally suitable for ideal sources of single electrons.
In current semiconductor technology electronic circuits even at a length scale of presently several tens of nanometers in size, the integrated circuit is still composed of a huge number of electrons. The ultimate goal, in this respect, is the realization of integrated circuits at the single electron level. Single electron circuits of the future will lead to much more powerful computers, however, will require a mechanism to transport a single electron from one functional part of the circuit to another and to manipulate it in a very controlled way.
Recent experiments by our group have gone a step further and succeeded in transporting a single electron from one quantum dot to another using a sound wave. This technology is opening an exciting platform for the transfer of quantum optics experiments to on chip solid-state devices and we propose to implement such novel ideas for the realization of single-electron-electronics.
Publications récentes :
Electrons surfing on a sound wave : an experimental platform for quantum optics with flying electrons Sylvain Hermelin, Shintaro Takada, Michihisa Yamamoto, Seigo Tarucha, Andreas D. Wieck, Laurent Saminadayar, Christopher Bauerle and Tristan Meunier Nature (London) 447, 435 (2011)
Michihisa Yamamoto, Shintaro Takada, Christopher Bäuerle, Kenta Watanabe, Andreas D. Wieck & Seigo Tarucha « Electrical control of a solid-state flying qubit », Nature Nanotechnology 7, 247-251 (2012).
Contact : Christopher Bauerle, Tristan Meunier