Site-selective fabrication of quantum nanostructures

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Quantum photonic integrated circuit (QPIC) is critical for a range of quantum information and photonic technologies ranging from optical quantum computing, quantum encryption, on-chip quantum communication and chip scale quantum systems, quantum sensing etc. To date, however, there has been no report on monolithic integration of active and passive quantum elements on a single chip. Previous studies primarily focused on heterogeneous integration of SPS with low-loss SiN/LiNbO3 or silicon on insulator platform (SOI). However, heterogenous integration using dissimilar materials suffers from high optical loss and integration complexity. Therefore, the development of monolithic integration of on-demand SPS on a low-loss WG using same material platform largely solve the afore-mentioned bottleneck. Homogenous integration of SPS with low-loss WG will be the essential first step and crucial to enable versatile and fully functional integrated QPIC. III-nitride materials exhibit unique properties making possible to use them to build efficient QPIC. This collaborative project aims to fabricate and demonstrate seamless integration of all group III-nitride active and passive quantum components in a single platform. To this end, leveraging their complementary expertise, know-how, facilities and intensive synergy, the applicants (Pr. Maher and Dr. Arafin) aim to deliver an efficient and scalable platform for making deterministic all III-nitride QPIC using technologically feasible structure at room temperature. The project will be valuable for the entire quantum science and technology community and the widespread commercialization of quantum technologies. It will be a significant milestone towards the development of quantum photonic integrated circuits for a broad range of quantum applications. The targeted outcomes will benefit the Canadian quantum industry through the training of highly qualified personnel in the fields of quantum science and technology. Eventually. It will also create careers in academia and industry, as well as will contribute to strengthening Canada among the leading nations in the emerging quantum sector.