Strong coupling over large distances

It seems that quantum technologies never sleep. Researchers are bringing new improvements and solving impossible challenges every day. In this case the good news came from our friends at Basel University. Together with the University of Hanover they’ve came up with a way to produce a strong coupling between two quantum systems over a distance.

Strong coupling between quantum systems is essential for quantum technologies to work, for instance to create quantum networks. Until now, for two systems to be strongly coupled, they both needed to be really close and in highly controlled environments where they could interact via electrostatic or magnetostatic forces.

For the first time, a team of physicist led by Prof. Philipp Treutlein, form the Department of Physics at Basel University, has succeeded in the creation of a strong coupling between two systems at large distances and at room temperature. In particular, they’ve used laser light to couple the motion of the spin of atoms over 1 meter [read more].

We made this picture for them to illustrate the process. This research has been published in Science.

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