Quantum Light Sources and Metrology
Quantum information science (QIS) technologies for computing, communications, sensing, and metrology rely on the ability to generate and detect non-classical information using light and matter. Quantum photonics plays a central role in QIS because of the inherent scalability and low-loss, high-speed transmission of light. This project focuses on the development, metrology, and application of efficient, scalable, and turnkey sources of quantum light, such as single photons, entangled-photon pairs, squeezed states, and quantum frequency combs. We seek to answer challenging questions such as: How can we produce and detect single photons on demand with unity efficiency, purity, and indistinguishability? What is the optimal design approach for developing on-chip sources of single and entangled photons? How can we create artificial solid-state atom-like arrays of quantum emitters with tunable and programmable properties? Our goal is to answer these important questions through materials development and characterization, device design and nanofabrication, and quantum photonic state analysis and tomography. Material platforms of particular interest include III-V quantum dots, chip-scale nonlinear sources, 2D material monolayers and heterostructures, and solid-state defects.