Chinese quantum satellite sends ‘unbreakable’ code — But World’s Leading Physicist Says Quantum Computers Are “Tools of Destruction, Not Creation”

Peace and Freedom

Reuters

AUGUST 10, 2017 / 12:15 AM

BEIJING (Reuters) – 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 realized, state media said on Thursday.

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 on Thursday, 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 fiber, 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…

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