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 …

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 …

The recent progress in integrated quantum optics has set the stage for the development of
an integrated platform for quantum information processing with photons, with potential …

An as yet outstanding goal in quantum optics is the realization of fast optical nonlinearities at
the single-photon level. This would allow for the implementation of optical devices with new …

An all-optical transistor is a device in which a gate light pulse switches the transmission of a
target light pulse with a gain above unity. The gain quantifies the change of the transmitted …

The realization of an all-optical transistor, in which one “gate” photon controls a “source”
light beam, is a long-standing goal in optics. By stopping a light pulse in an atomic ensemble …

All-optical switching is a technique in which a gate light pulse changes the transmission of a
target light pulse without the detour via electronic signal processing. We take this to the …

Quantum information science offers inherently more powerful methods for communication,
computation, and precision measurement that take advantage of quantum superposition and …

Epitaxial quantum dots formed by III–V compound semiconductors are excellent sources of
non-classical photons, creating single photons and entangled multi-photon states on …