Scientists have been trying to create quantum knots for several years, but there were several problems with it, and now a team of scientists managed to create quantum knots. It is hard to imagine these objects, they are particle-like rings or loops in a quantum field tied together. These quantum knots are created in a superfluid of quantum matter called Bose-Einstein Condensate. The chief researcher, Mikko Möttönen of this study said “Physicists have been theoretically predicting to tie quantum knots, but nobody ever figured out how to fulfill this experiment.
Image Credit: David Hall
The tying of the knot takes less than a thousandth of a second.
The researchers believe that one day it would also assist in the development of a topological quantum computer. Such a design would braid qubits into a kind of knot; different kinds of braids would encode different computational tasks. Learn more about this here.