Two-qubit operations for finite-energy Gottesman-Kitaev-Preskill encodings
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866910696081457152 |
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| author | Rojkov, Ivan Röggla, Paul Moser Wagener, Martin Fontboté-Schmidt, Moritz Welte, Stephan Home, Jonathan Reiter, Florentin |
| author_facet | Rojkov, Ivan Röggla, Paul Moser Wagener, Martin Fontboté-Schmidt, Moritz Welte, Stephan Home, Jonathan Reiter, Florentin |
| contents | We present techniques for performing two-qubit gates on Gottesman-Kitaev-Preskill (GKP) codes with finite energy, and find that operations designed for ideal infinite-energy codes create undesired entanglement when applied to physically realistic states. We demonstrate that this can be mitigated using recently developed local error-correction protocols, and evaluate the resulting performance. We also propose energy-conserving finite-energy gate implementations which largely avoid the need for further correction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_05262 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Two-qubit operations for finite-energy Gottesman-Kitaev-Preskill encodings Rojkov, Ivan Röggla, Paul Moser Wagener, Martin Fontboté-Schmidt, Moritz Welte, Stephan Home, Jonathan Reiter, Florentin Quantum Physics We present techniques for performing two-qubit gates on Gottesman-Kitaev-Preskill (GKP) codes with finite energy, and find that operations designed for ideal infinite-energy codes create undesired entanglement when applied to physically realistic states. We demonstrate that this can be mitigated using recently developed local error-correction protocols, and evaluate the resulting performance. We also propose energy-conserving finite-energy gate implementations which largely avoid the need for further correction. |
| title | Two-qubit operations for finite-energy Gottesman-Kitaev-Preskill encodings |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2305.05262 |