The QOD Lab explores fundamentals and applications of optical devices operating in the quantum regime. Our focus lies in imaging systems, where we use quantum information theory to enhance classical imaging systems and work toward constructing new microscopes that will utilize the full quantum information present in the optical field. We also explore quantum nonlinear processes that occur in atomic media, in order to implement quantum image processing at the single-photon level. For this, we aim to employ giant Rydberg atoms that can mediate interactions between photons. Finally, we also use atomic media to explore imaging in the time-frequency domain.