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The development of quantum computing threatens asymmetric cryptography. To address this threat, post-quantum cryptography (PQC) schemes, i.e. based on quantum computer resistant problems, have been proposed. The third round of the NIST PQC competition ended on July 5, 2022. The CRYSTALS-Kyber algorithm was selected for standardization. The history of cryptographic algorithms standardization shows that it […] >>

CEA Leti has conceived a holographic printer as part of its development of optical components and systems for the field of Augmented Reality. This printer allows us to record micro-holograms that encode elementary angular functions. The current application of the printer concern the development of pixelated holograms recorded with phase and angular matching for the […] >>

The development of silicon photonics technology has made it possible to integrate numerous photonic functions on the same chip, as close as possible to electronic functions, allowing the miniaturization of components in the fields of datacoms, telecoms and optical sensors. However, optical communication from chip to chip remains a key point to be developed (in […] >>

Uncooled thermal infrared cameras, based on the micro-bolometer technology, are present in several domains of application: industrial monitoring, automotive, automation, defense … To follow those high volume markets, there is a strong competition to develop more performant focal plane arrays, with smaller pixel pitch and including innovative optical functionalities. In this miniaturization context and optics […] >>

Over the past 20 years, wireless communication systems have continued to evolve and offer new services. Today, the success is such that the frequency bands below 10GHz are saturated and we are now turning to millimeter band frequencies. These frequencies offer the possibility to develop systems with higher data rates. However, they require beamforming to […] >>