The Laboratory of Electronics and Signal Processing (LETS) was created in 2018 as a research support group for the IRAMIS departments, with the ability to conduct its own research activities. It is affiliated with SPEC and is a joint CEA–CNRS group, including permanent staff from both institutes.
The activities of LETS focus essentially on instrumentation and real-time signal and data processing:
- Signal acquisition, involving analog front-end conditioning and converters (ADCs)
- Signal generation (DDS, DACs)
- Control systems (microcontrollers)
- Real-time signal processing (DSPs, FPGAs)
- Data processing
Among its research activities, LETS is developing a programmable, memoryless DSP based on RISC-V, and is seeking to integrate instrumentation chains at cryogenic temperatures, between 50 K and 1.5 K, with a particular focus on the 4 K stage. Once the initial obstacles have been overcome, LETS aims to develop a System-in-Package (SiP) integrating signal acquisition, processing, and generation, compatible with the low temperatures used in quantum experiments.
Other ongoing work includes improving the images obtained from low-field MRI systems currently under development at SPEC LNO, as well as activities related to bacterial detection, spectral analysis, and pollutant detection carried out within the group.