During World War II, the Nazis transmitted thousands of messages a day enciphered by a machine called Enigma. The Enigma code, they believed, was unbreakable.

Then, visionary mathematician Alan Turing and a team of British cryptographers cracked the code.

Today, MIT Professor Seth Lloyd has proposed a quantum enigma machine — constructed using the principles of quantum mechanics — that is uncrackable.

Read the full article at New Scientist.

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