By IQT News posted 09 Sep 2019

(SciTechDaily) Scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have created a miniaturized chip-based superconducting circuit that couples quantum waves of magnetic spins called magnons to photons of equivalent energy. Through the development of this “on chip” approach that marries magnetism and superconductivity for manipulation of quantum information, this fundamental discovery could help to lay the foundation for future advancements in quantum computing.
Argonne materials scientist Valentine Novosad said, “You can think of it like tuning a guitar or a violin. The length of your string — in this case, our resonator of photons — is fixed. Independently, for the magnons, we can tune the instrument by adjusting the applied magnetic field, which is similar to modifying the amount of tension on the string.”
Ultimately, the combination of a superconducting and a magnetic system allows for precise coupling and decoupling of the magnon and photon, presenting opportunities for manipulating quantum information.

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