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 …

Abstract Applications of Integrated Optics to quantum sources, detectors, interfaces,
memories and linear optical quantum computing are described in this review. By their …

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

Long-distance quantum communication via distant pairs of entangled quantum bits (qubits)
is the first step towards secure message transmission and distributed quantum computing …

We observe narrow band pairs of time-correlated photons of wavelengths 776 and 795 nm
from nondegenerate four-wave mixing in a laser-cooled atomic ensemble of Rb 87 using a …

We demonstrate experimentally a procedure to obtain the maximum efficiency for the
storage and retrieval of light pulses in atomic media. The procedure uses time-reversal to …

Single photon sources are key components for quantum technologies such as quantum
communication, computing and metrology. A key challenge towards the realization of global …

Entanglement of a 795 nm light polarization qubit and an atomic Rb spin-wave qubit for a
storage time of 0.1 s is observed by measuring the violation of Bell's inequality (S …

We report a polarization-entangled photon-pair source obtained via spontaneous four-wave
mixing (SFWM) in a Doppler-broadened atomic ensemble of R 87 b atoms using a Sagnac …

A source of deterministic single photons is proposed and demonstrated by the application of
a measurement-based feedback protocol to a heralded single-photon source consisting of …