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 …

This Colloquium describes a new paradigm for creating strong quantum interactions of light
and matter by way of single atoms and photons in nanoscopic lattices. Beyond the …

Arrays of optically trapped atoms excited to Rydberg states have recently emerged as a
competitive physical platform for quantum simulation and computing, where high-fidelity …

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

We present an object-oriented Python library for the computation of properties of highly-
excited Rydberg states of alkali atoms. These include single-body effects such as dipole …

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 …

This review summarizes experimental works performed over the last decade by several
groups on the manipulation of a few individual interacting Rydberg atoms. These studies …

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

We report the direct measurement of the van der Waals interaction between two isolated,
single Rydberg atoms separated by a controlled distance of a few micrometers. Working in a …

Strong coupling of molecules to the vacuum field of micro cavities can modify the potential
energy surfaces thereby opening new photophysical and photochemical reaction pathways …