Einstein's 'spooky' theory may lead to ultra-secure internet

March 24, 2014
Albert Einstein
Albert Einstein

(Phys.org) —Einstein's scepticism about quantum mechanics may lead to an ultra-secure internet, suggests a new paper by researchers from Swinburne University of Technology and Peking University.

Associate Professor Margaret Reid from Swinburne's Centre for Quantum and Optical Science said Einstein's reservations about quantum mechanics were highlighted in a phenomenon known as "'spooky' action at a distance."

In 1935 Einstein and researchers highlighted a 'spooky' theory in , which is the strange way stay connected even when separated by large distances.

"Until now the real application of this has been for messages being shared between two people securely without interception, regardless of the spatial separation between them," Professor Reid said.

"In this paper, we give theoretical proof that such messages can be shared between more than two people and may provide unprecedented security for a future quantum internet."

In the 1990s, scientists realised you can securely transmit a message through encrypting and using a shared key generated by Einstein's strange entanglement to decode the message from the sender and receiver. Using the quantum key meant the message was completely secure from interception during transmission.

Sending Einstein's entanglement to a larger number of people means the key can be distributed among all the receiving parties, so they must collaborate to decipher the message, which Professor Reid said makes the message even more secure.

"We found that a secure message can be shared by up to three to four people, opening the possibility to the theory being applicable to secure messages being sent from many to many.

"The message will also remain secure if the devices receiving the message have been tampered with, like if an iPhone were hacked, because of the nature of Einstein's spooky entanglement.

"Discovering that it can be applied to a situation with more parties has the potential to create a more secure internet – with less messages being intercepted from external parties."

The paper was published in Physical Review Letters.

Explore further: Reviving Einstein's spooky action at a distance

More information: Genuine Multipartite Einstein-Podolsky-Rosen Steering, Q.Y. He and M. D. Reid, Phys. Rev. Lett. 111, 250403 (2013) link.aps.org/doi/10.1103/PhysRevLett.111.250403

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empirical_bayesian
5 / 5 (1) Mar 25, 2014
Terrible title. It implies the physics and theory were Einstein's and, while he started the path towards Quantum, he essentially opposed every bit of it, being very uncomfortable with its implications, even of the wave-particle duality.
Jizby
Mar 26, 2014
This comment has been removed by a moderator.
Jizby
Mar 26, 2014
This comment has been removed by a moderator.
antialias_physorg
5 / 5 (1) Mar 26, 2014
In the 1990s, scientists realised you can securely transmit a message through encrypting and using a shared key generated by Einstein's strange entanglement

The key isn't created by entanglement (the key is created via any good source of randomly polarized photons). The key is SHARED securely via entanglement.

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