Photonic building blocks for a fully integrated quantum computer

This thesis investigates quantum photonic technology, proposing novel designs and photonic components towards the next generation of quantum computing and information processing. Chapter 1 introduces the history and motivation behind quantum information, and evaluates today’s most promising quantum technology platforms. Chapter 2 provides an overview of requisite linear and nonlinear classical photonic theory, introduces topological photonics and quantum photonic concepts, as well as nanofabrication principles. In chapter 3, a published novel probabilistic single photon source design is proposed, aimed at improving yield and photon purity. Chapter 4 proposes a published novel scheme for manipulating photons with the goal of enabling robust new quantum photonic gate designs. Chapter 5 introduces two works investigating a new photonic platform, lithium niobate on insulator (section 5.1), suitable for quantum photonic technology, and demonstrates the initial steps towards the development of spectral filtering on this platform (section 5.2). This thesis seeks to explore and advance future quantum photonic technology, from sources design to quantum photonic gate design and fabrication, stepping closer to the long standing dream of scalable photonic quantum computing.<br>