Lithium niobate integrated quantum photonics

Lead Research Organisation: University of Cambridge
Department Name: Materials Science & Metallurgy

Abstract

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Description Our work has focused on the development and understanding of amorphous superconducting films and, in particular Mo-Si, for nanowire single-photon detectors. Fabrication has been optimised, and film characterisation has advanced. We have now transferred these capabilities to our colleagues in Glasgow, who will continue with detector development based upon these materials, including uniform large area focal plane arrays and integration with quantum photonic waveguide circuits.
Exploitation Route Our thin film development can be applied to general advancements in photon detector technology; e.g. uniform large area focal plane arrays, and integration with quantum photonic waveguide circuits. Ultimately, photon detection is a requirement for quantum communication and quantum computing, besides potential new applications in biological imaging, remote sensing and astronomy.
More generally, we have advanced the science of amorphous thin film fabrication and understanding, and this could have much wider impact.
Sectors Digital/Communication/Information Technologies (including Software),Electronics
 
Description This work has been step on the road to the application of quantum technologies utilising photons. Optimized materials are essential components for the necessary devices, and we demonstrated clearly the potential for use of amorphous thin film nano-wires as photon sensors, and highlighted the remaining issues to be overcome. Impact will come from, for example, quantum secure communications, and novel methods for medical imaging.
First Year Of Impact 2016