The atom's magnetic core - its nucleus is completely isolated from the outside world because it so minute.

"What we have shown is that we can write and read quantum information in the magnetic orientation of the nucleus," said Morello.

To give an idea of scale, a computer with 300 quantum bits is thought to be able to contain a level of classical information equivalent to all the elementary particles of the universe.

"What we are reliant on at the moment is the fact that it's just too hard to decrypt," said Vikram Sharma, the chief of Quintessence Labs.

However he added that in future through things like quantum computers these codes could be broken.

Cyber security is high on government's agenda following the last month reports on Chinese hackers allegedly gaining access to Australian government systems.

The new quantum network will incorporate Capital Hill, the new ASIO building and governmental departments such as the Treasury.

"It consists of fibre-optic links in the parliamentary triangle in Canberra to transmit information in an absolutely secure way," said Morello.

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