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New quantum storage technique could make quantum networking possible

What happened?

Engineers at Caltech have developed an approach for quantum storage. It could help pave the way for the development of large-scale optical quantum networks. The new system relies on nuclear spins—the angular momentum of an atom’s nucleus oscillating collectively as a spin wave. This collective oscillation effectively chains up several atoms to store information.

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Why is this important?

Quantum networking is a hot topic in the world of physics, and for good reason. If it can be perfected, it could offer a means of communicating with absolute security. But there's one big problem: quantum networks require a way to store data, and current methods are far from perfect. Now, researchers have come up with a new storage technique that could finally make quantum networking a reality. These quantum networks would connect quantum computers through a system that operates at a quantum, rather than classical, level. As they can with classical computers, engineers would like to be able to connect multiple quantum computers to share data and work together creating a “quantum internet.” This would open the door to several applications, including the ability to solve computations that are too large to be handled by a single quantum computer, as well as the establishment of unbreakably secure communications using quantum cryptography.