Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics
The typical time-independent view of quantum error correction (QEC) codes hides significant freedom in the decomposition into circuits that are executable on hardware. Using the concept of detecting regions, we design time-dynamic QEC circuits directly instead of designing static QEC codes to decomp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2023-11-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2023-11-07-1172/pdf/ |
| _version_ | 1797634568843427840 |
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| author | Matt McEwen Dave Bacon Craig Gidney |
| author_facet | Matt McEwen Dave Bacon Craig Gidney |
| author_sort | Matt McEwen |
| collection | DOAJ |
| description | The typical time-independent view of quantum error correction (QEC) codes hides significant freedom in the decomposition into circuits that are executable on hardware. Using the concept of detecting regions, we design time-dynamic QEC circuits directly instead of designing static QEC codes to decompose into circuits. In particular, we improve on the standard circuit constructions for the surface code, presenting new circuits that can embed on a hexagonal grid instead of a square grid, that can use ISWAP gates instead of CNOT or CZ gates, that can exchange qubit data and measure roles, and that move logical patches around the physical qubit grid while executing. All these constructions use no additional entangling gate layers and display essentially the same logical performance, having teraquop footprints within 25% of the standard surface code circuit. We expect these circuits to be of great interest to quantum hardware engineers, because they achieve essentially the same logical performance as standard surface code circuits while relaxing demands on hardware. |
| first_indexed | 2024-03-11T12:09:29Z |
| format | Article |
| id | doaj.art-1f2a759efe244113885f81c92facc008 |
| institution | Directory Open Access Journal |
| issn | 2521-327X |
| language | English |
| last_indexed | 2024-03-11T12:09:29Z |
| publishDate | 2023-11-01 |
| publisher | Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| record_format | Article |
| series | Quantum |
| spelling | doaj.art-1f2a759efe244113885f81c92facc0082023-11-07T14:44:53ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2023-11-017117210.22331/q-2023-11-07-117210.22331/q-2023-11-07-1172Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamicsMatt McEwenDave BaconCraig GidneyThe typical time-independent view of quantum error correction (QEC) codes hides significant freedom in the decomposition into circuits that are executable on hardware. Using the concept of detecting regions, we design time-dynamic QEC circuits directly instead of designing static QEC codes to decompose into circuits. In particular, we improve on the standard circuit constructions for the surface code, presenting new circuits that can embed on a hexagonal grid instead of a square grid, that can use ISWAP gates instead of CNOT or CZ gates, that can exchange qubit data and measure roles, and that move logical patches around the physical qubit grid while executing. All these constructions use no additional entangling gate layers and display essentially the same logical performance, having teraquop footprints within 25% of the standard surface code circuit. We expect these circuits to be of great interest to quantum hardware engineers, because they achieve essentially the same logical performance as standard surface code circuits while relaxing demands on hardware.https://quantum-journal.org/papers/q-2023-11-07-1172/pdf/ |
| spellingShingle | Matt McEwen Dave Bacon Craig Gidney Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics Quantum |
| title | Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics |
| title_full | Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics |
| title_fullStr | Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics |
| title_full_unstemmed | Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics |
| title_short | Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics |
| title_sort | relaxing hardware requirements for surface code circuits using time dynamics |
| url | https://quantum-journal.org/papers/q-2023-11-07-1172/pdf/ |
| work_keys_str_mv | AT mattmcewen relaxinghardwarerequirementsforsurfacecodecircuitsusingtimedynamics AT davebacon relaxinghardwarerequirementsforsurfacecodecircuitsusingtimedynamics AT craiggidney relaxinghardwarerequirementsforsurfacecodecircuitsusingtimedynamics |