00:00Five tiny quantum bits, controlled through a single shared microwave line.
00:04That is the setup behind a new advance in quantum computing.
00:07Researchers at Japan's Riken Center and collaborating institutions
00:11tested five silicon-based quantum bits, known as qubits.
00:15The challenge was keeping their operations accurate when several worked at once.
00:19Microwave signals can shift a qubit's quantum state, introducing errors into calculations.
00:25The team developed a calibration method that corrects these unwanted shifts
00:29by measuring qubits in pairs.
00:31That means researchers can reduce interference
00:34without separately calibrating every possible combination.
00:38When operated individually, the five qubits achieved gate fidelities above 99.99%.
00:44With up to three running simultaneously, accuracy stayed above that level.
00:49When all five operated together, fidelity was around 99.9%.
00:54Although one qubit fell slightly below that mark,
00:57silicon is already widely used in conventional chip manufacturing.
01:01This experiment does not deliver a finished quantum computer,
01:05but it offers a promising route toward controlling larger processors with fewer control lines.
01:10Disclosure.
01:11This video contains stock footage and content created or enhanced using AI-assisted tools.
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