Special Joint CPM/INTRIQ Seminar

FDSOI platform : leveraging semiconductor industry for large scale quantum computing

Tristan Meunier

Université Grenoble Alpes
CNRS, Institut Néel
Quobly

Si-based qubits are considered the most promising experimental system for scaling quantum computing. FDSOI CMOS technology is demonstrated as a platform to co-integrate spin qubits with cryo-electronics. Considering the requirement for quantum computing, Quobly’s strategy is to design and engineer good qubits in a technology as close as possible to the most advanced industrial technological nodes. Advancement in qubit manipulation for both electrons and holes in quantum dot arrays will be discussed, with demonstration of the elementary operations for running a quantum computer at µs-timescale and with state-of-the-art noise figure. For cryo-control, we show voltage gain as high as 75dB for long devices, noise of 10-11V2∙µm2/Hz and 1.29mV∙µm threshold voltage variability. Based on these characteristics, realisation of elementary control and read-out based on FdSOI-cryoelectronic systems will be presented and their performance will be discussed. Different strategies for co-integration of qubit and control cryo-electronics will be presented and their realization will be discussed.