Quantum information processing based on Rydberg atoms emerged as a promising
direction two decades ago. Recent experimental and theoretical progresses have shined …

The realization of strong interactions between individual photons is a long-standing goal of
both fundamental and technological significance. Scientists have known for over half a …

Enhancing light–matter coupling at the level of single quanta is essential for numerous
applications in quantum science. The cooperative optical response of subwavelength atomic …

Photon-photon scattering in vacuum is extremely weak. However, strong effective
interactions between single photons can be realized by employing strong light-matter …

The study of open quantum systems–microscopic systems exhibiting quantum coherence
that are coupled to their environment–has become increasingly important in the past years …

Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing …

The fundamental properties of light derive from its constituent particles—massless quanta
(photons) that do not interact with one another. However, it has long been known that the …

By mapping the strong interaction between Rydberg excitations in ultra-cold atomic
ensembles onto single photons via electromagnetically induced transparency, it is now …

The realization of strong nonlinear interactions between individual light quanta (photons) is
a long-standing goal in optical science and engineering,, being of both fundamental and …

Up to now, the measurement of radio-frequency (RF) electric field achieved using the
electromagnetically-induced transparency (EIT) of Rydberg atoms has proved to be of high …