Quantum Communications

Post date: Sep 10, 2013 7:00:01 AM

Toshiba Extends Reach of Quantum Encryption [ ref ]

"Quantum cryptography uses the weird laws of physics to secure communications in a way that's more secure than commercial, math-based encryption"

" In another effort, research company Battelle is working with quantum key distribution startup ID Quantique to build a hybrid encryption system that sends photons between two points and then uses traditional encryption on a local network"

"But because it could use standard equipment, Toshiba’s system helps bring down the cost of quantum encryption, which could make the technology attractive to a broader set of commercial and government customers"

Scientists ‘untangle’ quantum communications [ ref ]

"an entanglement-free quantum communications system that can transmit 107 quantum states per second"

" A quantum channel can also be used to communicate between quantum devices inside a quantum computer – in which case, speed is rather more important than security"

"achieving acceptable speed over long distance is a key focus of quantum communications research. Relatively slow communications in the terabit age is acceptable if the quantum channel is only being used for key distribution (with the key then used to encrypt a conventional communications channel), but not if you want to replace the classical channel entirely."