| 公告主旨 |
【Joint CQSE & NCTS Seminar】2026-01-19 High fidelity magic state preparation with non-local connectivity |
| 公告內容 |
Time: Jan. 19, 14:30 ~ 15:30
Title: High fidelity magic state preparation with non-local connectivity
Speaker: Pei-Kai Tsai, Ph.D. candidate in Applied Physics at Yale University
Place: NCTS Physics Lecture Hall, 4F, Chee-Chun Leung Cosmology Hall, NTU
Online Link:
https://nationaltaiwanuniversity-zbh.my.webex.com/nationaltaiwanuniversity-zbh.my/j.php?MTID=m314bb49889ca5a7ce97eed6d55ff1beb
Abstract:
Magic state cultivation is a state-of-the-art protocol to prepare high-fidelity non-Clifford resource states for universal quantum computation. It offers a significant reduction in spacetime overhead compared to traditional magic state distillation techniques. Cultivation protocols involve measuring a transversal logical Clifford operator on an initial small-distance code and then rapidly growing to a larger-distance code. In this work, we present a new cultivation scheme in which we measure the fold-transversal Hadamard of the unrotated surface code, and leverage unitary techniques to grow within the surface code family. Using both stabilizer and state vector simulations we find that this approach achieves the lowest known spacetime overhead for magic state cultivation. Practical implementation of our protocol is best suited to architectures with non-local connectivity, showing the strength of architectures where such connectivity is readily available.
Biography:
Pei-Kai Tsai is a Ph.D. candidate in Applied Physics at Yale University, working on quantum error correction for discrete qubit architectures. His recent research focuses on fault-tolerant quantum state preparation in quantum error-correcting codes. He received his B.S. in Physics from National Taiwan University in 2021.
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