Integrating organic-molecule single-photon sources with atomic quantum memories

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The quantum internet promises to spread the advantages of quantum technology across physical distances, which will give the power of a quantum computer to users through distributed quantum computing, as well as the protection of quantum communications and cryptography protocols to connect governments, businesses and individuals with unprecedented security. Just as today's internet shifted from an academic tool to one that has transformed our lives over the past three decades, the quantum internet has the potential to transform the ways Canadians, and people around the world interact with and use quantum technology.This collaboration will address an outstanding challenge related to hardware development for quantum communications technologies: developing a practical light-matter interface, known as a quantum memory, which processes and stores quantum data. Atomic quantum memories, like the ones developed in the LeBlanc lab, have demonstrated the potential for excellent performance in terms of their bandwidth, storage time, and efficiency. However, one of the advantages of using atoms (the perfection of the atomic transition) generally means that conventional emitters of quantum light (single photon sources) are too broadband to be compatible with these memories. To address this issue, the Clark group has been investigating polymer-encapsulated organic nanocrystals for single photon emission, whose properties are an excellent match for the atomic transitions of a quantum memory.In this Catalyst project, the LeBlanc and Clark groups initiate a collaboration to prototype a system that uses Clark's single-photon emitters with LeBlanc's atomic quantum memories. Through this work, they will build the foundation for advancing this combined technology toward real-world applications and devices, including and quantum repeaters and communications hub hardware.