A team of researchers from Europe and Asia claim to have quantum entangled frozen tardigrades, microscopic animals that are extremely hardy and can withstand practically any conditions or abuse.

According to a new controversial preprint, the researchers managed the feat by placing frozen tardigrades between two capacitor plates of a superconductor circuit to form a qubit, the quantum equivalent of a bit.

Upon contact, they say, the tardigrade changed the qubit’s frequency.