Academia Sinica develops a 20-qubit superconducting quantum computer, advancing Taiwan’s quantum fabrication capabilities.
Researchers at Academia Sinica have developed a 20-qubit superconducting quantum computer, marking Taiwan’s entry into large-scale quantum chip fabrication.The system was designed, fabricated, and integrated entirely in-house and is already open to domestic researchers for quantum simulation and testing.
The milestone follows Academia Sinica’s 2023 debut of Taiwan’s first domestically built 5-qubit superconducting quantum computer.Since then, the team has scaled its hardware, fabrication processes, and system integration to support more complex quantum operations while maintaining qubit stability.Quantum computers are viewed as a foundational technology for future high-performance computing, with applications ranging from material discovery to drug development.As countries race to advance quantum capabilities, the ability to manufacture larger, reliable quantum chips has become a key differentiator.Academia Sinica says the new 20-qubit system demonstrates that Taiwan can move beyond small-scale prototypes.The platform will be used by academic institutions and is expected to support industrial testing in hardware-software integration and quantum algorithm development.Scaling quantum chip control“Quantum computers hold immense potential for quantum simulation, material discovery, and drug development, and can be integrated with Supercomputers for high-performance hybrid computing,” said ChiiDong Chen, Distinguished Research Fellow at Academia Sinica.Chen said that building a practical quantum computer requires both high qubit quality and higher qubit counts.The 20-qubit system expands the computational variable space and shows that the team has achieved stable multi-qubit fabrication and coupling.To reach this stage, Academia Sinica applied semiconductor manufacturing expertise to quantum chip production.The team previously demonstrated superconducting qubit fabrication on an 8-inch wafer and established Taiwan’s first quantum chip fabrication and testing platforms.As qubit numbers increased, researchers addressed challenges related to fabrication uniformity, coupling precision, and interference. Techniques such as laser trimming were introduced to fine-tune qubit frequencies, while chip-stacking methods were improved to reduce crosstalk and enhance readout efficiency.Coherence time breakthrough achievedOne of the most significant advances is the increase in qubit coherence time. The team extended the coherence time from 15–30 microseconds in the earlier 5-qubit system to 530 microseconds in the new platform, allowing quantum states to remain stable for longer computations.“Superconducting qubits are highly sensitive to electromagnetic disturbance,” said Chung-Ting Ke, Assistant Research Fellow at the Research Center for Critical Issues. He explained that noise entering the system, even beyond microwave control signals, can degrade performance.The improved coherence time reflects tighter control over fabrication, packaging, and system-level noise. Researchers say this performance level provides a foundation for building higher-performance quantum computers with more qubits and longer computation windows.To promote collaboration, Academia Sinica will host a Superconducting Quantum Computing Workshop from February 4 to 6 at its South Campus. Participants will be able to test the 20-qubit system on-site, highlighting Taiwan’s growing role in quantum research and applied development.
Coherence Time High-Performance Computing Quantum Chips Quantum Computing Superconducting Qubits Taiwan Quantum
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