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FM: Fall Meeting

FM 14: Quantum Computation: Hardware Platforms I

FM 14.5: Talk

Montag, 23. September 2019, 15:15–15:30, 3044

Long-Distance Charge Transport in (Al,Ga)As — •Matthias Künne¹, Stefan Trellenkamp², Julian Ritzmann³, Arne Ludwig³, Andreas D. Wieck³, and Hendrik Bluhm¹ — ¹JARA-FIT Institute for Quantum Information, Forschungszentrum Jülich GmbH and RWTH Aachen University, D-52074 Aachen, Germany — ²Helmholtz Nano Facility, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany — ³Lehrstuhl für angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44801 Bochum, Germany

For scalable quantum computing architectures, a transfer of the qubit information over distances of at least a few microns is advantageous, e.g. for making space for signal vias [1]. For electron spin qubits, one possibility is to move the electrons themselves.

In my talk, I will present a device designed to allow the shuttling of electrons over 7 microns. We employed high-yield, multi-layer electron beam lithography to fabricate the required metallic gates. I will show initial results on the characterization of the device.

[1] L. M. K. Vandersypen et al., npj Quantum Inf. 3, 34 (2017)