Fault-tolerant quantum computation without distillation on a 2D device
Thomas R Scruby, Kae Nemoto, Zhenyu Cai · 2025
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Description
Thomas Scruby, Kae Nemoto, and Zhenyu Cai weigh a shortcut for fault-tolerant quantum computing, in work from 2025. Hard gates on error-corrected qubits are usually made with magic state distillation. That process is costly and factory-like.
The team shows how a looped pipeline design can run a published non-Clifford gate between surface codes. The design shuttles qubits over short ranges on a two-dimensional chip. Its scheduling is only slightly more complex than the plain code. Honest accounting, though, favors distillation for now. The gate's decoder is weak, forcing very large code sizes to keep errors low. The authors argue that better decoders could flip the comparison.
Catalog record
| CREATOR | Thomas R Scruby, Kae Nemoto, Zhenyu Cai |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 51 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |