Phys.org has reported:

A hardware test of quantum magic state cleanup cut errors 40-fold, according to the headline. Qubits, the quantum equivalent of digital bits, are fragile and prone to errors, making reliable quantum computers difficult to build.

Traditional magic state distillation filters out flaws, but it is extremely resource-intensive. The source provides no details about who conducted the test, when or where it took place, or the method used.