Quantum light–matter interfaces are at the heart of photonic quantum technologies.
Quantum memories for photons, where non-classical states of photons are mapped onto …

This article reviews recent theoretical and experimental advances in the fundamental
understanding and active control of quantum fluids of light in nonlinear optical systems. In …

We propose how to create and manipulate one-way nonclassical light via photon blockade
in rotating nonlinear devices. We refer to this effect as nonreciprocal photon blockade (PB) …

Electromagnetically induced transparency, as a quantum interference effect to eliminate
optical absorption in an opaque medium, has found extensive applications in slow-light …

Coherent preparation by laser light of quantum states of atoms and molecules can lead to
quantum interference in the amplitudes of optical transitions. In this way the optical …

Techniques that use quantum interference effects are being actively investigated to
manipulate the optical properties of quantum systems. One such example is …

Ultrafast all‐optical switching, possessing the unique function of light controlling light, is an
essential component of on‐chip ultrafast optical connection networks as well as integrated …

We report an experiment in which a light pulse is effectively decelerated and trapped in a
vapor of Rb atoms, stored for a controlled period of time, and then released on demand. We …

We identify form-stable coupled excitations of light and matter (“dark-state polaritons”)
associated with the propagation of quantum fields in electromagnetically induced …

Photons rarely interact—which makes it challenging to build all-optical devices in which one
light signal controls another. Even in nonlinear optical media, in which two beams can …