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The OPERA-photonics laboratory carries out fundamental and applied research activities based on four main axes in the field of optics. The first, in non-linear optics, is at the border between fundamental research and technological applications. In particular, the laboratory is working to improve the understanding of second and third order non-linear interactions in two-dimensional materials such as graphene, or in semiconductor nano-photonic optical guides. This research activity is also oriented towards the study of complex dynamics appearing in non-linear passive optical cavities and towards the ultra-efficient conversion of frequencies, in resonators or in integrated waveguides. His expertise covers more generally second and third order non-linear interactions in free or guided propagation, as well as in optical resonators. The development of original solutions for ultra-fast information processing in the context of artificial intelligence is the second area of research. It deals with all-optical or optoelectronic implementations of special neural network architectures called reservoir computer. The laboratory, a pioneer in this field, has developed solutions based on optical cavities together with time, spectral and, more recently, spatial multiplexing. The objective is to create all-optical analog computers capable of performing tasks that are inaccessible to standard digital computers. The third axis focuses on light-matter interactions at the quantum level and the realization of non-conventional light sources (single photon emitters or pairs of photons). These topics are addressed for their fundamental aspects but also for their applications to the processing and quantum communication of information, including quantum cryptography. The fourth axis, in bio-photonics, is currently mainly oriented towards the development of optoelectronic neurological sensors for the development of new generations of implantable active neuro-stimulators. The OPERA-photonics laboratory is well equipped to carry out experiments in its various research fields.
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