Twin-Field QKD allows secure quantum key distribution over 500 km of optical fibre.
TREL shows in Nature Communications that quantum dot devices based on indium phosphide are capable of electrically injected single photon and entangled photon pair emission around 1550 nm. Entanglement fidelity of 87 ± 4% is sufficient for the application of one-way error correction protocols and the emission at 1550 nm can be directly integrated with existing long distance quantum communication and cryptography systems.
Proof-of-principle demonstration of quantum digital signatures (QDS) mediated by measurement-device-independent quantum key distribution (MDI-QKD). Published today in Nature Communications TREL has devised an efficient protocol to distil multiple signatures from the same block of data, thus reducing the statistical fluctuations in the sample and greatly enhancing the final QDS rate in the finite-size scenario.
BT and Toshiba today opened the UK’s first secure quantum communication showcase at BT’s research and development centre in Ipswich.
Scientific Reports paper demonstrates a full quantum encryption system operating with a bandwidth of 200 Gb/s over 100 km of fibre and shows quantum encryption of 10 Tb/s is feasible for a 50 km fibre.
Compact semiconductor-laser system that can be directly phase modulated reported by Toshiba in Physical Review X.
Toshiba reports in Nature Nanotechnology a device that can send the photons in weak laser light in different directions based on their number.