The past decade has seen a dramatic increase in interest in new single-photon detector
technologies. A major cause of this trend has undoubtedly been the push towards optical …

Quantum cryptography Page 1 Quantum cryptography Nicolas Gisin, Grégoire Ribordy,
Wolfgang Tittel, and Hugo Zbinden Group of Applied Physics, University of Geneva, 1211 …

The concept of the photon, central to Einstein's explanation of the photoelectric effect, is
exactly 100 years old. Yet, while photons have been detected individually for more than 50 …

Photonic quantum technologies promise a revolution of the world of information processing,
from simulation and computing to communication and sensing, thanks to the many …

Single-photon detectors (SPDs) are the most sensitive instruments for light detection. In the
near-infrared range, SPDs based on III–V compound semiconductor avalanche photodiodes …

The generation, measurement, and manipulation of light at the single-and few-photon levels
underpin a rapidly expanding range of applications. These range from applications moving …

We have used an InGaAs/InP single-photon avalanche diode detector module in
conjunction with a time-of-flight depth imager operating at a wavelength of 1550 nm, to …

The detection and generation of single photons has seen an upsurge in interest in recent
years as new scientific fields of research, for example quantum information processing, have …

We have demonstrated a system capable of directly measuring the photon-number state of a
single pulse of light using a superconducting transition-edge sensor microcalorimeter. We …

In this letter, we present a source of quantum-correlated photon pairs based on parametric
fluorescence in a fiber Sagnac loop. The photon pairs are generated in the 1550-nm fiber …