Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...

Scientists introduced atomic defects in spinel using cerium, and voilà! The gemstone became a solid qubit system.

The gemstone spinel, known for its vibrant colors resembling gems like rubies and sapphires, has now been shown to be capable of storing quantum information, making it a viable material in the field ...

we want to reliably be able to control which pathway the spinel oxide tends towards, so we can reach the desired outcome every time." The research team used NiCo 2 O 4 as a model with Ce.