Homepage of the 2nd Institute of Physics, RWTH Aachen - News

Current events

Next talk tomorrow at 11:00 by Sunaja Baltic!

News 03.12.2021
New publication: Triggering phase-coherent spin packets by pulsed electrical spin injection across an Fe/GaAs Schottky barrier

Site Content:

← Back to the full news list.

News 08.03.2021

New publication: Tunable interdot coupling in few-electron bilayer graphene double quantum dots

../../images/news/2021_APL_Volk.png

Appl. Phys. Lett. 118, 103101 (2021)
We present a highly controllable double quantum dot device based on bilayer graphene. Using a device architecture of interdigitated gate fingers, we can control the interdot tunnel coupling between 1 and 4 GHz and the mutual capacitive coupling between 0.2 and 0.6 meV, independent of the charge occupation of the quantum dots. The charging energy and, hence, the dot size remain nearly unchanged. The tuning range of the tunnel coupling covers the operating regime of typical silicon and GaAs spin qubit devices.

read more