Efficient modeling of superconducting quantum circuits with tensor networks
Abstract We use a tensor network method to compute the low-energy excitations of a large-scale fluxonium qubit up to a desired accuracy. We employ this numerical technique to estimate the pure-dephasing coherence time of the fluxonium qubit due to charge noise and coherent quantum phase slips from f...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-01-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-020-00352-4 |
| _version_ | 1818851332863295488 |
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| author | Agustin Di Paolo Thomas E. Baker Alexandre Foley David Sénéchal Alexandre Blais |
| author_facet | Agustin Di Paolo Thomas E. Baker Alexandre Foley David Sénéchal Alexandre Blais |
| author_sort | Agustin Di Paolo |
| collection | DOAJ |
| description | Abstract We use a tensor network method to compute the low-energy excitations of a large-scale fluxonium qubit up to a desired accuracy. We employ this numerical technique to estimate the pure-dephasing coherence time of the fluxonium qubit due to charge noise and coherent quantum phase slips from first principles, finding an agreement with previously obtained experimental results. By developing an accurate single-mode theory that captures the details of the fluxonium device, we benchmark the results obtained with the tensor network for circuits spanning a Hilbert space as large as 15180. Our algorithm is directly applicable to the wide variety of circuit-QED systems and may be a useful tool for scaling up superconducting quantum technologies. |
| first_indexed | 2024-12-19T07:03:21Z |
| format | Article |
| id | doaj.art-14ba4cdcfdf34b19b72748b00ad90274 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-12-19T07:03:21Z |
| publishDate | 2021-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-14ba4cdcfdf34b19b72748b00ad902742022-12-21T20:31:22ZengNature Portfolionpj Quantum Information2056-63872021-01-017111110.1038/s41534-020-00352-4Efficient modeling of superconducting quantum circuits with tensor networksAgustin Di Paolo0Thomas E. Baker1Alexandre Foley2David Sénéchal3Alexandre Blais4Institut quantique & Département de Physique, Université de SherbrookeInstitut quantique & Département de Physique, Université de SherbrookeInstitut quantique & Département de Physique, Université de SherbrookeInstitut quantique & Département de Physique, Université de SherbrookeInstitut quantique & Département de Physique, Université de SherbrookeAbstract We use a tensor network method to compute the low-energy excitations of a large-scale fluxonium qubit up to a desired accuracy. We employ this numerical technique to estimate the pure-dephasing coherence time of the fluxonium qubit due to charge noise and coherent quantum phase slips from first principles, finding an agreement with previously obtained experimental results. By developing an accurate single-mode theory that captures the details of the fluxonium device, we benchmark the results obtained with the tensor network for circuits spanning a Hilbert space as large as 15180. Our algorithm is directly applicable to the wide variety of circuit-QED systems and may be a useful tool for scaling up superconducting quantum technologies.https://doi.org/10.1038/s41534-020-00352-4 |
| spellingShingle | Agustin Di Paolo Thomas E. Baker Alexandre Foley David Sénéchal Alexandre Blais Efficient modeling of superconducting quantum circuits with tensor networks npj Quantum Information |
| title | Efficient modeling of superconducting quantum circuits with tensor networks |
| title_full | Efficient modeling of superconducting quantum circuits with tensor networks |
| title_fullStr | Efficient modeling of superconducting quantum circuits with tensor networks |
| title_full_unstemmed | Efficient modeling of superconducting quantum circuits with tensor networks |
| title_short | Efficient modeling of superconducting quantum circuits with tensor networks |
| title_sort | efficient modeling of superconducting quantum circuits with tensor networks |
| url | https://doi.org/10.1038/s41534-020-00352-4 |
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