I don't know.🤷‍♂️

Just Google AI'd it: Niobium is a promising material in the development of superconducting qubits for quantum computers, offering potential advantages over traditional materials like aluminum. Niobium-based qubits can operate at higher temperatures and with potentially longer coherence times, meaning they can store information for a longer period before it degrades. However, challenges remain in minimizing energy loss and improving overall qubit performance.