SFQ counter-based precomputation for large-scale cryogenic VQE machines
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866911787146805248 |
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| author | Ueno, Yosuke Imamura, Satoshi Tomida, Yuna Tanimoto, Teruo Tanaka, Masamitsu Tabuchi, Yutaka Inoue, Koji Nakamura, Hiroshi |
| author_facet | Ueno, Yosuke Imamura, Satoshi Tomida, Yuna Tanimoto, Teruo Tanaka, Masamitsu Tabuchi, Yutaka Inoue, Koji Nakamura, Hiroshi |
| contents | The variational quantum eigensolver (VQE) is a promising candidate that brings practical benefits from quantum computing. However, the required bandwidth in/out of a cryostat is a limiting factor to scale cryogenic quantum computers. We propose a tailored counter-based module with single flux quantum circuits in 4-K stage which precomputes a part of VQE calculation and reduces the amount of inter-temperature communication. The evaluation shows that our system reduces the required bandwidth by 97%, and with this drastic reduction, total power consumption is reduced by 93% in the case where 277 VQE programs are executed in parallel on a 10000-qubit machine. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_00363 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | SFQ counter-based precomputation for large-scale cryogenic VQE machines Ueno, Yosuke Imamura, Satoshi Tomida, Yuna Tanimoto, Teruo Tanaka, Masamitsu Tabuchi, Yutaka Inoue, Koji Nakamura, Hiroshi Quantum Physics Hardware Architecture The variational quantum eigensolver (VQE) is a promising candidate that brings practical benefits from quantum computing. However, the required bandwidth in/out of a cryostat is a limiting factor to scale cryogenic quantum computers. We propose a tailored counter-based module with single flux quantum circuits in 4-K stage which precomputes a part of VQE calculation and reduces the amount of inter-temperature communication. The evaluation shows that our system reduces the required bandwidth by 97%, and with this drastic reduction, total power consumption is reduced by 93% in the case where 277 VQE programs are executed in parallel on a 10000-qubit machine. |
| title | SFQ counter-based precomputation for large-scale cryogenic VQE machines |
| topic | Quantum Physics Hardware Architecture |
| url | https://arxiv.org/abs/2403.00363 |