Implementation of a photonic chip for quantum communications

Abstract

Quantum-based technologies are one of the most promising technologies for the future. A considerable investment is being made in quantum computing, quantum communications and quantum sensing since these technologies exceed the performances of the traditional equivalent technologies. Integrated photonics, a technology previously utilized in telecommunication applications, rapidly grows into other fields like quantum technologies. This trend was influenced by improvements in fabrication techniques and the introduction of new materials to the market, which also created new opportunities for investigation. The advantages of integrated photonics include high integration on a small footprint, low power consumption, and the ability to manipulate light with simple components. As a result, it is an ideal technical solution for manipulating photon properties in quantum applications. However, it is still a young technology that needs further development to improve its reliability. The proposed thesis's work will explore the properties of Indium Phosphide as an integrated photonic material for quantum applications on a newly available foundry platform called IMOS. Our main goal is to build a photonic integrated circuit with components that can be used for quantum applications. We plan to design a system capable of generating single photons, filtering residual light from a pump laser, and forwarding the single photons into a particular physical output. The work will emphasize the design workflow for several integrated photonic components, their simulations, and mask designs, preparing them for chip fabrication. The obtained results should allow us to determine whether Indium Phosphate IMOS is a suitable platform for quantum applications.