Benchmarking universal quantum gates via channel spectrum
Abstract Noise remains the major obstacle to scalable quantum computation. Quantum benchmarking provides key information on noise properties and is an important step for developing more advanced quantum processors. However, current benchmarking methods are either limited to a specific subset of quan...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-41598-8 |
| _version_ | 1797558081525121024 |
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| author | Yanwu Gu Wei-Feng Zhuang Xudan Chai Dong E. Liu |
| author_facet | Yanwu Gu Wei-Feng Zhuang Xudan Chai Dong E. Liu |
| author_sort | Yanwu Gu |
| collection | DOAJ |
| description | Abstract Noise remains the major obstacle to scalable quantum computation. Quantum benchmarking provides key information on noise properties and is an important step for developing more advanced quantum processors. However, current benchmarking methods are either limited to a specific subset of quantum gates or cannot directly describe the performance of the individual target gate. To overcome these limitations, we propose channel spectrum benchmarking (CSB), a method to infer the noise properties of the target gate, including process fidelity, stochastic fidelity, and some unitary parameters, from the eigenvalues of its noisy channel. Our CSB method is insensitive to state-preparation and measurement errors, and importantly, can benchmark universal gates and is scalable to many-qubit systems. Unlike standard randomized schemes, CSB can provide direct noise information for both target native gates and circuit fragments, allowing benchmarking and calibration of global entangling gates and frequently used modules in quantum algorithms like Trotterized Hamiltonian evolution operator in quantum simulation. |
| first_indexed | 2024-03-10T17:26:26Z |
| format | Article |
| id | doaj.art-7a6d1dcc94124b70b000ef8f20eb614b |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:26:26Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-7a6d1dcc94124b70b000ef8f20eb614b2023-11-20T10:10:53ZengNature PortfolioNature Communications2041-17232023-09-0114111210.1038/s41467-023-41598-8Benchmarking universal quantum gates via channel spectrumYanwu Gu0Wei-Feng Zhuang1Xudan Chai2Dong E. Liu3Beijing Academy of Quantum Information SciencesBeijing Academy of Quantum Information SciencesBeijing Academy of Quantum Information SciencesBeijing Academy of Quantum Information SciencesAbstract Noise remains the major obstacle to scalable quantum computation. Quantum benchmarking provides key information on noise properties and is an important step for developing more advanced quantum processors. However, current benchmarking methods are either limited to a specific subset of quantum gates or cannot directly describe the performance of the individual target gate. To overcome these limitations, we propose channel spectrum benchmarking (CSB), a method to infer the noise properties of the target gate, including process fidelity, stochastic fidelity, and some unitary parameters, from the eigenvalues of its noisy channel. Our CSB method is insensitive to state-preparation and measurement errors, and importantly, can benchmark universal gates and is scalable to many-qubit systems. Unlike standard randomized schemes, CSB can provide direct noise information for both target native gates and circuit fragments, allowing benchmarking and calibration of global entangling gates and frequently used modules in quantum algorithms like Trotterized Hamiltonian evolution operator in quantum simulation.https://doi.org/10.1038/s41467-023-41598-8 |
| spellingShingle | Yanwu Gu Wei-Feng Zhuang Xudan Chai Dong E. Liu Benchmarking universal quantum gates via channel spectrum Nature Communications |
| title | Benchmarking universal quantum gates via channel spectrum |
| title_full | Benchmarking universal quantum gates via channel spectrum |
| title_fullStr | Benchmarking universal quantum gates via channel spectrum |
| title_full_unstemmed | Benchmarking universal quantum gates via channel spectrum |
| title_short | Benchmarking universal quantum gates via channel spectrum |
| title_sort | benchmarking universal quantum gates via channel spectrum |
| url | https://doi.org/10.1038/s41467-023-41598-8 |
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