High-Dimensional Quantum Photonics: Pushing the limits of Quantum Information Science

From large-scale quantum cryptographic networks to addressing quantum states of matter, photons are ubiquitous in the quantum technologies of today. However, most modern applications utilize very little of the enormous information-carrying potential that a photon has to offer. Fully exploiting the photonic spatial and temporal degrees of freedom promises noise-resistant quantum information systems with greater capacity and higher levels of security than ever before. 

In this talk, I will present an overview of quantum photonics with structured light, and discuss recent work on high-dimensional quantum communication and multi-photon entanglement. First, I will talk about the development of a high-dimensional beam splitter for twisted photons and its application for quantum state characterization and high-capacity quantum key distribution. Second, I will discuss the creation of the first high-dimensionally entangled state of three photons, as well as a computational algorithm for designing new quantum experiments that generate a vast family of complex, multi-photon entangled states.