Generating Non-Classical and Spatially-Correlated Photons in a Waveguide QED Architecture*

In waveguide quantum electrodynamics (wQED), atoms interact with a guided continuum of photonic modes. These systems can serve as a platform to study exotic radiation phenomena. The electrical distance between atoms along the waveguide is controllable by tuning the frequency, and thus the wavelength, of light emitted from the atoms. This enables the exploration of a wide variety of radiation phenomena. In this work, we experimentally study devices with multiple superconducting transmon qubits that are strongly coupled to a one-dimensional co-planar waveguide. We present experimental results demonstrating the generation of non-classical and spatially correlated photons in a wQED setting.