FAP, May 30 / PRNewswire-FirstCall-Asianet /-- Swiss and Italian scientists have developed a quantum key distribution (QKD) system based on integrated photonics, which can transmit secure keys at an unprecedented speed. In the new QKD system, all components except lasers and detectors are integrated into the chip, which has many advantages such as compact, low cost and easy for large-scale production. The principle verification experiment represents an important step towards the practical application of this highly secure communication method. The results are published in the latest issue of the journal Optical Research.