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Diamonds could well be the next big thing that protects the digital home.

Australian scientists have revealed that by inserting a diamond into a fibre optic cable that can take the sparkle out of hacking.
Scientists in Melbourne believe they have developed an unbreakable information code that stops hackers reaching devices inside a digital home. By integrating a diamond inside an optical cable they have proved that a device cannot be hacked.

 During tests the researchers at Melbourne University used a microwave to “fuse” a tiny diamond, just 1/1000th of a millimetre, onto an optical fibre, which could be used to create a single photon beam of light which they say cannot be hacked.

Photons are the smallest known particles of light. Until now, scientists could not produce a single-photon beam, thereby narrowing down the stream of light used to transmit information. “When it comes to cryptology, it’s not so much of a problem to have a coded message intercepted, the problem is getting the key (to decode it),” said university research fellow James Rabeau, who developed the diamond device.

“The single-photon beam makes for an unstealable key.”

The security of information depends on the properties of light that is used to transmit data. Laser beams which are used at the moment send billions of photons, making it easy for hackers to steal some of them and break the code, said Rabeau.

The diamond device sends a stream of single photons, so that if the chain of communication is broken, the information becomes corrupted and a hacker immediately exposed to both the sender and the receiver, he said…. Only diamonds are known to create stable single-photon beams at room temperature … instead of … Only diamonds are known to create single-photon beams.
Rabeau and his team have received an A$3.3 million innovation grant from the Victoria state government to develop a prototype and commercialise the technology.

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