Use of low-noise detectors can both increase the secret bit rate of long-distance quantum
key distribution (QKD) and dramatically extend the length of a fibre optic link over which …

We report the first quantum key distribution (QKD) experiment to enable the creation of
secure keys over 42 dB channel loss and 200 km of optical fibre. We used the differential …

We present a quantum key distribution system with a 2.5 GHz repetition rate using a three-
state time-bin protocol combined with a one-decoy approach. Taking advantage of …

Quantum key distribution provides secure keys resistant to code-breaking quantum
computers. The continuous-variable version of quantum key distribution offers the …

Proposed in 1984, quantum key distribution (QKD) allows two users to exchange provably
secure keys via a potentially insecure quantum channel. Since then, QKD has attracted …

The theoretical existence of photon-number-splitting attacks creates a security loophole for
most quantum key distribution (QKD) demonstrations that use a highly attenuated laser …

Quantum key distribution (QKD) uniquely allows the distribution of cryptographic keys with
security verified by quantum mechanical limits. Both protocol execution and subsequent …

We report a demonstration of quantum key distribution (QKD) over a standard telecom fiber
exceeding 50 dB in loss and 250 km in length. The differential phase shift QKD protocol was …

Quantum key distribution (QKD) can provide fundamentally proven secure communication.
Towards application, the secret key rate (SKR) is a key figure of merit for any QKD system …

We report the first continuous-variable quantum key distribution (CVQKD) experiment to
enable the creation of 1 Mbps secure key rate over 25 km standard telecom fiber in a coarse …