Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908774687571968 |
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| author | Kopylov, Denis A. Meier, Torsten Sharapova, Polina R. |
| author_facet | Kopylov, Denis A. Meier, Torsten Sharapova, Polina R. |
| contents | Entangled two-mode Gaussian states constitute an important building block for continuous variable quantum computing and communication protocols. In this work, we theoretically study two-mode bipartite states which are extracted from multimode light generated via type-II parametric down-conversion (PDC) in lossy waveguides. For these states, we demonstrate that the squeezing quantifies entanglement and we construct a measurement basis which results in the maximal bipartite entanglement. We illustrate our findings by numerically solving the spatial master equation for PDC in a Markovian environment. The optimal measurement modes are compared with two widely-used broadband bases: the Mercer-Wolf basis (the first-order coherence basis) and the Williamson-Euler basis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_09587 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides Kopylov, Denis A. Meier, Torsten Sharapova, Polina R. Quantum Physics Optics Entangled two-mode Gaussian states constitute an important building block for continuous variable quantum computing and communication protocols. In this work, we theoretically study two-mode bipartite states which are extracted from multimode light generated via type-II parametric down-conversion (PDC) in lossy waveguides. For these states, we demonstrate that the squeezing quantifies entanglement and we construct a measurement basis which results in the maximal bipartite entanglement. We illustrate our findings by numerically solving the spatial master equation for PDC in a Markovian environment. The optimal measurement modes are compared with two widely-used broadband bases: the Mercer-Wolf basis (the first-order coherence basis) and the Williamson-Euler basis. |
| title | Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2506.09587 |