# A new theoretical proposal addresses the hardest problem in semiconductor quantum scaling - slug: a-new-theoretical-proposal-addresses-the-hardest-problem-in-semiconductor-quantum-scaling - date: 2026-04-07 - category: Quantum Computing A theorist proposes single-pulse entangling gates for semiconductor spin qubits that are immune to charge noise at one specific bias point. No hardware has been built to test it. An 18-qubit germanium array demonstrated the same modular architecture last week at 99.8% fidelity. ---