QuantumQuantum Computing Report1h ago
RIKEN Demonstrates High-Fidelity Simultaneous Control of Silicon Spin
RIKEN Demonstrates High-Fidelity Simultaneous Control of Silicon Spin Qubits Above 99.9% Threshold
TL;DRScientists controlled five quantum computer bits simultaneously with 99.9% accuracy using silicon.
Why it matters: Practical quantum computers need this level of precision and multi-qubit control to function reliably at scale.
Researchers at RIKEN and collaborators have achieved high-fidelity simultaneous control of five silicon spin qubits, maintaining over 99.9% accuracy. They overcame crosstalk caused by AC-Stark shifts through a new calibration protocol, enabling the use of a single microwave…
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