Engineering fast bias-preserving gates on stabilized cat qubits
Stabilized cat codes can provide a biased noise channel with a set of bias-preserving (BP) gates, which can significantly reduce the resource overhead for fault-tolerant quantum computing. All existing schemes of BP gates, however, require adiabatic quantum evolution, with performance limited by exc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-02-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.013082 |
| _version_ | 1797210881676804096 |
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| author | Qian Xu Joseph K. Iverson Fernando G. S. L. Brandão Liang Jiang |
| author_facet | Qian Xu Joseph K. Iverson Fernando G. S. L. Brandão Liang Jiang |
| author_sort | Qian Xu |
| collection | DOAJ |
| description | Stabilized cat codes can provide a biased noise channel with a set of bias-preserving (BP) gates, which can significantly reduce the resource overhead for fault-tolerant quantum computing. All existing schemes of BP gates, however, require adiabatic quantum evolution, with performance limited by excitation loss and nonadiabatic errors during the adiabatic gates. In this paper, we apply a derivative-based leakage-suppression technique to overcome nonadiabatic errors, so that we can implement fast BP gates on Kerr-cat qubits with improved gate fidelity while maintaining high noise bias. When applied to concatenated quantum error correction, the fast BP gates not only can improve the logical error rate but also can reduce resource overhead, which enables more efficient implementation of fault-tolerant quantum computing. |
| first_indexed | 2024-04-24T10:17:39Z |
| format | Article |
| id | doaj.art-bdb5d3740d494878a10b32a01aa324f6 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:17:39Z |
| publishDate | 2022-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-bdb5d3740d494878a10b32a01aa324f62024-04-12T17:17:40ZengAmerican Physical SocietyPhysical Review Research2643-15642022-02-014101308210.1103/PhysRevResearch.4.013082Engineering fast bias-preserving gates on stabilized cat qubitsQian XuJoseph K. IversonFernando G. S. L. BrandãoLiang JiangStabilized cat codes can provide a biased noise channel with a set of bias-preserving (BP) gates, which can significantly reduce the resource overhead for fault-tolerant quantum computing. All existing schemes of BP gates, however, require adiabatic quantum evolution, with performance limited by excitation loss and nonadiabatic errors during the adiabatic gates. In this paper, we apply a derivative-based leakage-suppression technique to overcome nonadiabatic errors, so that we can implement fast BP gates on Kerr-cat qubits with improved gate fidelity while maintaining high noise bias. When applied to concatenated quantum error correction, the fast BP gates not only can improve the logical error rate but also can reduce resource overhead, which enables more efficient implementation of fault-tolerant quantum computing.http://doi.org/10.1103/PhysRevResearch.4.013082 |
| spellingShingle | Qian Xu Joseph K. Iverson Fernando G. S. L. Brandão Liang Jiang Engineering fast bias-preserving gates on stabilized cat qubits Physical Review Research |
| title | Engineering fast bias-preserving gates on stabilized cat qubits |
| title_full | Engineering fast bias-preserving gates on stabilized cat qubits |
| title_fullStr | Engineering fast bias-preserving gates on stabilized cat qubits |
| title_full_unstemmed | Engineering fast bias-preserving gates on stabilized cat qubits |
| title_short | Engineering fast bias-preserving gates on stabilized cat qubits |
| title_sort | engineering fast bias preserving gates on stabilized cat qubits |
| url | http://doi.org/10.1103/PhysRevResearch.4.013082 |
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