Microwave to optical quantum transducer using mechanical resonators

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Researchers have driven rapidly surging efforts to build a global network of quantum processors, a paradigm known as the "Quantum Internet" which enables the secure transmission of information between distant quantum computers. Superconducting circuits are good candidates for on-chip integration, fast processing, and non-classical state synthesis, which is why they have become a major focus of industrial research As in conventional telecommunication networks, long-distance quantum communication requires the use of light optical photons in fibres are the only realistic candidates due to their low loss, large bandwidth of transmission, and resilience to thermal noise. Realising and connecting fully functional quantum processors requires incorporating the two above-mentioned quantum technology paradigms-computation and communication-in joint systems for small- and large-scale quantum networks. To realize a network operating over long distances while preserving the quantum nature of the signal, devices referred to as quantum transducers are necessary to efficiently transfer or transduce, the information between telecom wavelengths and the operating frequency of the various nodes. In this project, we are aiming to develop quantum transducers by focusing on converting microwave signals to optical using mechanical resonators and developing long distance quantum communication and networking quantum devices. The unique fabrication facility at IST Austria allows the UCalgary team to nanofabricate the quantum devices more efficiently. This will lead to numerous socio-economic benefits, including research into revolutionary and fundamentally improved communication/network infrastructure that impacts the daily life of Canadians and is of strategic priority to the Government of Canada, and through training of future leaders and highly qualified personnel (HQP) for employment by Canadian companies, governmental laboratories, Government of Canada departments, and academic institutions.