Diamond-based devices could help IT managers detect network snooping and prevent information theft as anti-eavesdropping technology from the University of Melbourne gets venture funding. Technology, based on quantum cryptography, uses a diamond to produce a single photon of light to stop information being intercepted. Quantum Communications Victoria (QCV) secured a $9 million Australian (US$7 million) deal with a consortium of quantum communication companies, including MaqiQ Technologies, Japan, Qucor, Sydney, and California-based SGI.”]
Source: https://www.csoonline.com/article/2119809/diamonds-take-a-quantum-leap-to-it-security.html