GoKawiilRIKEN team cuts errors in simultaneous control of five silicon spin qubits
Researchers at the RIKEN Center for Emergent Matter Science, working with collaborators, demonstrated high-accuracy control of five silicon spin qubits operated at the same time over a shared microwave control line. The team identified a key source of errors that arises when qubits are driven simultaneously and developed a method to suppress it, publishing the results in Nature Physics.
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Silicon spin qubits are attractive because they can be made with existing chip-manufacturing techniques, but scaling them up has been hampered by accuracy loss when many qubits run at once. Co-first author Leon Camenzind says the work shows high-fidelity control is possible even with simultaneous operation, which the researchers frame as a step toward larger silicon-based quantum processors, though building full-scale machines will still require further advances.
- RIKEN scientists controlled five silicon spin qubits simultaneously with high accuracy
- They traced a hidden error source tied to simultaneous qubit operation and devised a fix
- The advance, published in Nature Physics, is seen as a step toward scalable silicon quantum processors
Source: sciencedaily.com, 2026-10-26
Published there as: “Scientists overcome a hidden obstacle to more powerful quantum computers”
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