Photons have been a flagship system for studying quantum mechanics, advancing quantum
information science, and develo** quantum technologies. Quantum entanglement …

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 …

Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have
rapidly emerged as a highly promising photon-counting technology for infrared wavelengths …

The optical fibre is an essential tool for our communication infrastructure since it is the main
transmission channel for optical communications. The latest major advance in optical fibre …

Entangled photon pairs are a critical resource in quantum communication protocols ranging
from quantum key distribution to teleportation. The current workhorse technique for …

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

Qudit entanglement is an indispensable resource for quantum information processing since
increasing dimensionality provides a pathway to higher capacity and increased noise …

Light plays an essential role in our world, with several technologies relying on it. Photons
will also play an important role in the emerging quantum technologies, which are primed to …

Measuring the states of polarization (SoP) of light is fundamentally important for applications
ranging from communication, sensing, spectroscopy, imaging, to navigation …

We experimentally demonstrate the direct generation of polarization-entangled photon pairs
in an optical fiber at room temperature by exploiting type-II phase-matched spontaneous …