NEWSROOM

Researchers at Tohoku University and NIMS have overcome a long-standing barrier to fast charge detection in high-resistance 2D-material quantum devices. By integrating a strontium titanate variable capacitor into a high-frequency resonant circuit, the team achieved near-perfect impedance matching, clearly resolving Coulomb oscillations from individual electrons and remaining stable under the perpendicular magnetic fields needed for spin-valley qubits.