Magnon Breakthrough Could Shrink Quantum Computers to the Size of a Penny

University of Vienna physicists reported record magnon lifetimes of up to 18 microseconds, around 100 times longer than earlier measurements.

They achieved this using highly pure yttrium iron garnet spheres, short-wavelength magnons, and temperatures near absolute zero.

The result, published in Science Advances, could make magnons more practical carriers of quantum information.

That may help build smaller, more scalable quantum chips and hybrid systems that connect different quantum technologies.