Science News, International, Beijing, August 10:- China has sent an “unbreakable” code from a satellite to the Earth marking the first time space-to-ground quantum key distribution technology has been realised state media said today.
China launched the world’s first quantum satellite last August to help establish “hack proof” communications a development the Pentagon has called a “notable advance”.
The official Xinhua news agency said the latest experiment was published in the journal Nature today where reviewers called it a “milestone”.
The satellite sent quantum keys to ground stations in China between 645 km (400 miles) and 1,200 km (745 miles) away at a transmission rate up to 20 orders of magnitude more efficient than an optical fibre, Xinhua cited Pan Jianwei, lead scientist on the experiment from the state-run Chinese Academy of Sciences as saying.
“That for instance can meet the demand of making an absolute safe phone call or transmitting a large amount of bank data,” Pan said.
-(NAV, Inputs: Agencies)