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Published on 7 December 2023
Research FieldNew computing paradigms, circuits and technologies, incl. quantum

Domaine-SMathematics - Numerical analysis - Simulation

ThemeTechnological challenges

Theme-SEngineering sciences

New computing paradigms, circuits and technologies, incl. quantum Technological challenges Mathematics - Numerical analysis - Simulation Engineering sciences DRT DCOS SCCS LSM Grenoble
Modeling of charge noise in spin qubits
Thanks to strong partnerships between several research institutes, Grenoble is a pioneer in the development of future technologies based on spin qubits using manufacturing processes identical to those used in the silicon microelectronics industry. The spin of a qubit is often manipulated with alternating electrical (AC) signals through various spin-orbit coupling (SOC) mechanisms that couple it to electric fields. This also makes it sensitive to fluctuations in the qubit's electrical environment, which can lead to large qubit-to-qubit variability and charge noise. The charge noise in the spin qubit devices potentially comes from charging/discharging events within amorphous and defective materials (SiO2, Si3N4, etc.) and device interfaces. The objective of this postdoc is to improve the understanding of charge noise in spin qubit devices through simulations at different scales. This research work will be carried out using an ab initio type method and also through the use of the TB_Sim code, developed within the CEA-IRIG institute. This last one is able of describing very realistic qubit structures using strong atomic and multi-band k.p binding models.
Département Composants Silicium (LETI) Service Caractérisation, Conception et Simulation Laboratoire de Simulation et Modélisation
MARTINEZ I DIAZ Biel CEA DRT/DCOS//LSM CEA/Grenoble 0438781306
Start date1/12/2023

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