New study could hold key to hack-proof systems

phys.org | 7/17/2018 | Staff
stefania (Posted by) Level 3
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Major data breaches have made worldwide headlines of late but an international consortium of scientists—including a professor from Heriot-Watt—have developed a new technique that could result in hack-proof systems.

The researchers have focussed on a complex quantum property known as entanglement, which is a vital ingredient in the quest to protect sensitive data.

Paper - Today - Nature - Physics - Team

In a new paper published today in Nature Physics, the team of scientists from Austria, the Czech Republic, and the UK, reveal a more advanced and noise-robust way to measure the entanglement of high-dimensional quantum systems.

Entangled particles of light behave in an identical manner, irrespective of how far apart they may be. Measurements made on a pair of entangled light particles would always result in correlated outcomes, even if they were physically on different planets. The outcomes of these measurements represent different quantum levels, which can be used as a "quantum alphabet" for encoding information.

States - Strings - Information - Distances - Part

As such, entangled states can be used to generate shared strings of random information across large distances, which form an essential part of data encryption. Any attempts to hack this communication would destroy the sensitive entanglement between the two particles and reveal the...
(Excerpt) Read more at: phys.org
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