Criptografía cuántica con fotones entrelazados

Resum

A compact quantum key distribution system based on entangled photons has been constructed and demonstrated. The experiment established a secure key over a free space channel between two sites separated by 1.5 km. The data was adquired during 10 uninterrumpted hours and produced on average 630 bit s^–1 after basis reconciliation and privacy amplification.