Cheng-Xian Zhang

Robust two-qubit gates in silicon double quantum dots with composite pulses and optimized exchange control

Robust two-qubit gates are essential for scalable silicon spin qubits, but their fidelities are limited by microwave-control imperfections and charge-noise-induced exchange fluctuations. We propose a practical scheme for robust controlled-Z (CZ) and controlled-NOT (CNOT) gates in a silicon double quantum dot. By appl...