With the new innovation focus Q-PICs within InQuoSens outlined here, the Free State of Thuringia can significantly and strategically develop the potential of the research subject of integrated quantum optical systems to leverage the inherent innovation and transfer potential for a large number of industrial partners. Due to the broad application potential of photonic quantum technologies and future quantum optical circuits, InQuoSens directly or at least indirectly addresses three of the fields of specialization defined by RIS Thuringia, with the field of Industrial Production and Systems at the center: 1) The specialization field of Industrial Production and Systems benefits from the approaches to be researched for the realization of photon pair sources in scalable material platforms, such as titanium dioxide (TiO2). The specialization field of Industrial Production and Systems benefits from the approaches to be researched for the realization of photon pair sources in scalable material platforms, such as titanium dioxide (TiO2) and gallium phosphide (GaP), which have the clear potential to establish themselves on wafer-scale processes in industrial production. InQuoSens thus enables the use of quantum technologies in an industrial context, where high volumes and standardized manufacturing processes are of great importance. Milestone 1: Proof of the functionality of the InQuoSens technology infrastructure by producing a Q-PIC demonstrator that integrates a quantum system in an application-relevant manner (month 24).2) The innovation focus of Q-PICs also contributes indirectly to the specialization field of sustainable energy and resource use as well as to the European Green Deal, as the quantum optical systems being investigated have a substantially lower energy consumption than previously used technologies. Furthermore, due to the possible higher integration density, fewer resources are required for the realization of quantum systems. Indirectly, the basic results of Q-PICs on quantum sensor applications will make a direct contribution to the monitoring of sustainable resources through improved environmental monitoring.
