Si based quantum computer architecture and associated engineering challenges*

Si-based QC appears as a promising approach to build a quantum processor; thanks to the size of the qubits, the quality of the quantum gates and the VLSI ability to fabricate billions of closely identical objects. The quality of Si spin qubits has improved very fast with the introduction of isotopically purified 28Si.
In this presentation, we will share our quantum accelerator architecture and will present progress made towards the actual demonstration of this architecture. We will show data ranging from material development to packaging with insights in device design. We will review the technological challenges that are still to be tackled. We will highlight how we leverage tight-binding simulations to develop a QCAD activity (quantum bit computer aided design)