University College London scientists have been identifying components and working toward a secure quantum network between cities. The proposed network is deemed ‘large-scale’ and ‘unhackable’. Large-scale as it is designed to carry data between cities. The quantum network is considered unhackable by virtue of quantum properties which instantly reveal compromise of communications.
French and Swiss research teams have tested varying amplitude and direction of magnetic fields around atoms of the rare earth element, Ytterbium. The teams have found a “magic point” which permits a thousand-fold increase in coherence. Such a discovery helps move along the concept of building quantum computing networks with the aid of quantum repeaters. High-coherence (longevity) is needed to ensure signals sent are alive for the entire distance to the receiver, or the next repeater as the case may be.
In a first for the United States, a private firm, Quantum Xchange, has launched a quantum key distribution service. Expected to serve the Northeast from D.C. to Boston, the network will be connecting Wall Street with financial operations in New Jersey. The network model is to provide quantum keys on demand; making QKD available to many economic sectors.
The U.K.’s National Quantum Technologies Programme spawned a 500Gbps quantum-secure network between Cambridge and Ipswich. The distance covered is greater than 120km. Its purpose is to study and validate use cases for quantum key distribution.
U.S. Air Force Grants Millions to Tulane University Study Just as the U.S. Army has granted two commercial corporations to study quantum networking, the U.S.
Quantum Communications with Photon Colors, Essentially. Measuring the properties of spectral lines from single photons is that much more precise, or so we think, thanks
