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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2308.04192 |
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| _version_ | 1866910551160913920 |
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| author | Pankovich, Brendan Kan, Angus Wan, Kwok Ho Ostmann, Maike Neville, Alex Omkar, Srikrishna Sohbi, Adel Brádler, Kamil |
| author_facet | Pankovich, Brendan Kan, Angus Wan, Kwok Ho Ostmann, Maike Neville, Alex Omkar, Srikrishna Sohbi, Adel Brádler, Kamil |
| contents | We propose fault-tolerant architectures based on performing projective measurements in the Greenberger-Horne-Zeilinger (GHZ) basis on constant-sized, entangled resource states. We present linear-optical constructions of the architectures, where the GHZ-state measurements are encoded to suppress the errors induced by photon loss and the probabilistic nature of linear optics. Simulations of our constructions demonstrate high single-photon loss thresholds compared to the state-of-the-art linear-optical architecture realized with encoded two-qubit fusion measurements performed on constant-sized resource states. We believe this result shows a resource-efficient path to achieving photonic fault-tolerant quantum computing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_04192 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | High photon-loss threshold quantum computing using GHZ-state measurements Pankovich, Brendan Kan, Angus Wan, Kwok Ho Ostmann, Maike Neville, Alex Omkar, Srikrishna Sohbi, Adel Brádler, Kamil Quantum Physics Mathematical Physics We propose fault-tolerant architectures based on performing projective measurements in the Greenberger-Horne-Zeilinger (GHZ) basis on constant-sized, entangled resource states. We present linear-optical constructions of the architectures, where the GHZ-state measurements are encoded to suppress the errors induced by photon loss and the probabilistic nature of linear optics. Simulations of our constructions demonstrate high single-photon loss thresholds compared to the state-of-the-art linear-optical architecture realized with encoded two-qubit fusion measurements performed on constant-sized resource states. We believe this result shows a resource-efficient path to achieving photonic fault-tolerant quantum computing. |
| title | High photon-loss threshold quantum computing using GHZ-state measurements |
| topic | Quantum Physics Mathematical Physics |
| url | https://arxiv.org/abs/2308.04192 |