In the context of quantum technologies, the generation and manipulation of single photons
has become a key element for applications such as quantum communication and quantum …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

Quantum key distribution (QKD) together with one time pad encoding can provide
information-theoretical security for communication. Currently, though QKD has been widely …

The twin-field (TF) quantum key distribution (QKD) protocol and its variants are highly
attractive because they can beat the well-known fundamental limit of the secret key rate for …

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 …

In this paper, we present the quantum key distribution (QKD) network designed and
implemented by the European project SEcure COmmunication based on Quantum …

A wide area quantum key distribution (QKD) network deployed on communication
infrastructures provided by China Mobile Ltd. is demonstrated. Three cities and two …

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 …

We introduce a new class of quantum key distribution protocols, tailored to be robust against
photon number splitting (PNS) attacks. We study one of these protocols, which differs from …

We report on the experimental implementation of a Bennett-Brassard 1984 (BB84) protocol
type quantum key distribution over a 144 km free-space link using weak coherent laser …