Quantum Key Distribution (QKD) Server
Friday 12 June 2009
The Quantum Key Distribution (QKD) server is a hardware appliance that is used to perform automated secret key creation, management and exchange, using the BB84 and SARG quantum cryptography protocols.
The QKD server works in a point-to-point configuration and is connected by the quantum channel that is made of a single mode dark fiber and uses a wavelength of 1550nm.
The cryptographic symmetric keys are exchanged between two QKD servers using phase encoding of photons. For details on quantum key distribution theory, please visit the quantum cryptography page.
The range between two point-to-point QKD servers currently reaches 100 km. On a distance of 25 km, QKD can exchange keys at a rate of approximately 1 kbits/sec.
MagiQ Technologies also commercializes network appliances implementing QKD.