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 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 …

In the past, long-distance free-space quantum communication experiments could only be
implemented at night. During the daytime, the bright background sunlight prohibits quantum …

Quantum key distribution (QKD) is the first quantum information task to reach the level of
mature technology, already fit for commercialization. It aims at the creation of a secret key …

Quantum communication, and indeed quantum information in general, has changed the way
we think about quantum physics. In 1984 and 1991, the first protocol for quantum …

Integrated optical components on lithium niobate play a major role in standard high-speed
communication systems. Over the last two decades, after the birth and positioning of …

We suggest a type of attack on quantum cryptosystems that exploits variations in detector
efficiency as a function of a control parameter accessible to an eavesdropper. With gated …

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 perform quantum key distribution (QKD) over a single fibre in the presence of four
classical channels in a C-band dense wavelength division multiplexing (DWDM) …

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