We review the current status of single-photon-source and single-photon-detector
technologies operating at wavelengths from the ultraviolet to the infrared. We discuss …

The distribution of quantum states over long distances is limited by photon loss.
Straightforward amplification as in classical telecommunications is not an option in quantum …

Quantum memory is essential for the development of many devices in quantum information
processing, including a synchronization tool that matches various processes within a …

Multiphoton interference reveals strictly nonclassical phenomena. Its applications range
from fundamental tests of quantum mechanics to photonic quantum information processing …

During the past decade the interaction of light with multiatom ensembles has attracted much
attention as a basic building block for quantum information processing and quantum state …

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 …

Highly excited Rydberg atoms have many exaggerated properties. In particular, the
interaction strength between such atoms can be varied over an enormous range. In a …

The faithful storage of a quantum bit (qubit) of light is essential for long-distance quantum
communication, quantum networking and distributed quantum computing. The required …

In a fibre-based quantum information network, telecom-wavelength transmission between
quantum memory elements is required to minimize absorption. Owing to the paucity of …

This paper reviews recent efforts to realize a high‐efficiency memory for optical pulses using
slow and stored light based on electromagnetically induced transparency (EIT) in …