The goal of this project is to create a universal QPIC platform at 1550nm by integrating InP, Quantum Dots and InGaAs detectors on SiN PICs together for the first time. This new platform has the potential to revolutionise quantum photonics by enabling the creation of on-demand single photons and entangled photon pairs, with efficient single photon detection. Critical to this platform is its compatibility with existing optical fibre networks which makes this a cost-effective solution for quantum communication, computing, and quantum metrology applications. We demonstrate the flexibility of our QPIC platform in three different use cases: Quantum Key Distribution, Remote Quantum Computing and Quantum Clock Synchronisation experiments

Bio-inspired and quantum paradigms have risen as the two main competitors aiming to address the inefficiency of “conventional” computational schemes. Up to now these two paradigms utilize non-overlapping routes towards addressing this common objective; routes that are challenging in terms of scalability and integration readiness. PROMETHEUS’ proposition aims to shatter the boundaries between neuromorphic and quantum engineering and merge them to a common disruptive photonic integrated platform, able to merge each field’s merits. The platform will be based on a dense reconfigurable silicon waveguide mesh, powered by non-volatile BaTiO3 phase-shifters offering marginal power consumption and GHz tuning speed, during mesh reconfiguration. A key “upgrade” to this “synaptic” platform will be the co-integration of ultra-fast, multi-section lasers, acting as “neurons”. Sophisticated electro-optic packaging, will provide the basis to PROMETHES’ platform so as to evolve from the proof-of-concept limbo to a standalone neuromorphic/quantum hybrid integrated engine. This versatile chip will enable the realization of neuromorphic architectures such as large-scale spiking neural networks by exploiting signal multiplexing and GHz firing rate, photonic time-based convolutional networks, liquid state machines and on-chip training. PROMETHEUS will render feasible the exploration of disruptive concepts such as quantum reservoir computing. The platform will be utilized as an integrated quantum random generator and as a physical unclonble function, adding physical layer trustworthiness and novel security features. PROMETHEUS’ chips will be benchmarked, in terms of consumption, accuracy, speed and versatility, in a set of demanding applications that extend from ultra-fast image processing for flow cytometry and machine vision, signal equalization and authentication in high-speed optical links to quantum key generation and distribution.