Scalable approaches for many-qubit devices
The main goal of this project is to explore a highly scalable approaches based on cryogenic electronics for controlling quantum-dot spin-qubit devices. Specifically, we aim at using cryogenic DC voltage sources that are custom designed at the Central Institute Electronic Systems (ZEA-2), at Research Center Jülich. These will be flip-chip bonded to qubit devices to bias the electrostatic confinement gates for the quantum dots. Our goal is to demonstrate a device with 50 independently tunable qubits. The figure schematically shows the vision motivating this approach. Furthermore, we are developing fully automated tuning procedures which will be tested on this device to determine their reliability (see also Software Projects).
In addition, in collaboration with IMEC, we are exploring the feasibility of foundry-based fabrication processes for the realization of Si-based spin qubits.
A list of related group publications is given below (see External Links).
- Control Electronics For Semiconductor Spin Qubits, Geck et al., arXiv:1903.04872 (2019)
- Interfacing spin qubits in quantum dots and donors - hot, dense, and coherent, Vandersypen et al., npj Quantum information 3, 34 (2017)
- The engineering challenges in quantum computing, Almudever et al., Proceedings of the 2017 Design, Automation & Test in Europe (DATE)