Quantum error correction with an Ising machine under circuit-level noise
| Autor: | Fujisaki, Jun, Maruyama, Kazunori, Oshima, Hirotaka, Sato, Shintaro, Sakashita, Tatsuya, Takeuchi, Yusaku, Fujii, Keisuke |
|---|---|
| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Efficient decoding to estimate error locations from outcomes of syndrome measurement is the prerequisite for quantum error correction. Decoding in presence of circuit-level noise including measurement errors should be considered in case of actual quantum computing devices. In this work, we develop a decoder for circuit-level noise that solves the error estimation problems as Ising-type optimization problems. We confirm that the threshold theorem in the surface code under the circuitlevel noise is reproduced with an error threshold of approximately 0.4%. We also demonstrate the advantage of the decoder through which the Y error detection rate can be improved compared with other matching-based decoders. Our results reveal that a lower logical error rate can be obtained using our algorithm compared with that of the minimum-weight perfect matching algorithm. Comment: 13 pages, 14 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|