# French Researchers Demonstrate Superconducting Qubit With Zero Charge Drift for Three Months - Date: 2026-03-16 - Category: Quantum Computing Researchers at ENS Lyon and ENS Paris-Saclay have demonstrated a tantalum-based transmon qubit that maintains stable charge offset for nearly three months—a significant finding for a field plagued by unpredictable charge drift that disrupts qubit operation. The team, led by Benjamin Huard (ENS L... ---