Physicists developing a prototype quantum hard drive have taken a significant step in that direction, improving storage time by about 100 times.
The Australian National University (ANU) and University of Otago team record is six hours and is a very important step towards creating a global secure quantum information-based encryption network that could be used for banking. and personal emails.
"We believe that it will soon be possible to share quantum information between any two points in the world," said lead author Manjin Zong of Research. School of Physics and Engineering (RSPE).
"Quantum states are very fragile and normally collapse in milliseconds. "Our long storage times have the potential to revolutionize the transmission of quantum information."
Quantum information promises arresting encryption because quantum particles, such as photons, can be created in a way that connects them inherently. Interactions with one affect the other, as far as they are.
Researchers from the two universities stored quantum information in europium atoms embedded in a crystal. THE technique this (solid-state) is a promising alternative to using laser beams in optical fibers—an approach currently used to create quantum networks about 100 kilometers long.
"Our storage times are so great that we need to reconsider what is the best way to share quantum data," Zong said. "Even by transporting our crystals at walking speeds we have less loss than laser systems at a distance."
“We can now imagine storing light in individual crystals and then transporting them to different parts of the network, thousands of kilometers apart. So we think of our crystals as portable optical hard drives diskς κβαντικής εμπλοκής (quantum entanglement)'.
After recording a quantum state in Europe's nuclear spin using laser light, the team subjected the crystal to a combination of fixed and oscillating magnetic fields to conserve fragile quantum information.
"Both fields isolate the spins of Europe and prevent quantum information from leaking," he said. Jevon Longtell of the University of Otago.
The research was published in Nature.
Source: naftemporiki.gr
