This review describes the emerging field of waveguide quantum electrodynamics concerned
with the interaction of photons propagating in a waveguide with localized quantum emitters …

The interaction of light with a single two-level emitter is the most fundamental process in
quantum optics, and is key to many quantum applications. As a distinctive feature, two …

We experimentally and theoretically investigate collective radiative effects in an ensemble of
cold atoms coupled to a single-mode optical nanofiber. Our analysis unveils the microscopic …

Vortices are topologically nontrivial defects that generally originate from nonlinear field
dynamics. All-optical generation of photonic vortices—phase singularities of the …

Quadratic light-matter interactions are nonlinear couplings such that quantum emitters
interact with photonic or phononic modes exclusively via the exchange of excitation pairs …

Controlling the photon statistics of light is paramount for quantum science and technologies.
Recently, we demonstrated that transmitting resonant laser light past an ensemble of two …

Complete control of light-matter interactions at a single quantum level is critical for quantum
science applications such as precision measurement and information processing …

Entanglement, the non-local correlations present in multipartite quantum systems, is a key
resource for quantum technologies. It is therefore a major priority to develop simple and …

The interaction of an ensemble of N two-level quantum emitters with a single-mode
electromagnetic field is described by the Tavis-Cummings model. There, the collectively …

Waveguide QED with cold atoms provides a potent platform for the study of non-equilibrium,
many-body, and open-system quantum dynamics. Even with weak coupling and strong …