Silicon qubits surpass 99.99% gate fidelity while operating three at once

Silicon spin qubits typically lose accuracy when several qubits are controlled in parallel. A new result demonstrates above 99.99% fidelity while operating three qubits simultaneously, a key step toward scalable semiconductor-based quantum computers.

• Single-qubit gate fidelity exceeded 99.99%
• Three qubits operated simultaneously without accuracy loss
• Platform is compatible with standard chip manufacturing