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Dara, Ravi
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Physics Social Sciences Other

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Journal : Journal of Computer Science Advancements

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PEELING THE WILLOW CHIP GOOGLE’S BREAKTHROUGH IN TAMING QUANTUM ERROR Dara, Ravi; Dara, Chenda; Sothy, Chak
Journal of Computer Science Advancements Vol. 3 No. 5 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/jsca.v3i5.3324

Abstract

The realization of fault-tolerant quantum computing is currently impeded by the stochastic nature of qubit decoherence and the inherent complexity of scaling control systems. This study rigorously evaluates the architectural innovations of Google’s Willow processor, specifically investigating its efficacy in mitigating noise through surface code error correction. The primary objective is to verify the hypothesis of exponential error suppression within a superconducting transmon array, determining if the system can surpass the critical “break-even” point. Methodologically, the research employs a quantitative performance analysis, configuring physical qubits into logical units of varying code distances (d=3 to d=7) and subjecting them to sustained syndrome extraction cycles under millikelvin cryogenic conditions. Results indicate a fundamental departure from previous scaling paradoxes; logical error rates were observed to halve with every increment in code distance, definitively crossing the algorithmic break-even threshold. The data confirms that real-time decoding and optimized tunable coupler designs effectively isolate errors, preventing topological lattice corruption. In conclusion, the Willow chip provides empirical validation that increasing system size now yields higher fidelity, establishing a critical engineering baseline for the development of large-scale, utility-grade quantum computers.
Co-Authors Al Imran, Hamzah Alves, Livia Ardian Al Hidaya, Ardian Besari, Anam Dara, Chenda Dara, Sokha Khoiriyah Khoiriyah Kiri, Ming Kumar, Rohan MISMIWATI, MISMIWATI MISMIWATI Mokodensoho, Sabil Nofirman, Nofirman Rith, Vicheka Rocha, Thiago Savitri, Dita Nurul Sefrizal, Levy Siti Shofiah Sok, Vann Sok, Vanna Sothy, Chak St Rahmah Sulaiman Sulaiman Syam, Anna Rahma Vann, Dara Vann, Rithy Zani, Benny Novico