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CEA-Leti’s world-leading experience with SOI development has helped set the stage for its demonstration that fully depleted silicon-on-insulator (FD-SOI) technology is a good option for cryogenic CMOS applications.
The operation of circuits at cryogenic temperatures (<100K) is necessary in a wide range of applications such as infrared sensors, spatial applications, and cryobiology. More recently, CEA-Leti’s researchers have been investigating their use in quantum computing, for reading and controlling quantum bits.
CEA-Leti has published findings on the performance and variability of 28nm CMOS FD-SOI technology for cryogenic applications, down to 100mK. This has provided some of the first experimental measurements and analysis of these circuits at cryogenic temperatures, including study of the drain current and transconductance of FD-SOI transistors, matching, self-heating, and low-frequency noise at temperatures <20K.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.