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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.05672 |
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| _version_ | 1866910117021089792 |
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| author | Alves, Moisés Sena, Vitor L. Zamora, Santiago Sarubi, Tailan S. Junior, A. de Oliveira Tacla, Alexandre B. Chaves, Rafael |
| author_facet | Alves, Moisés Sena, Vitor L. Zamora, Santiago Sarubi, Tailan S. Junior, A. de Oliveira Tacla, Alexandre B. Chaves, Rafael |
| contents | Randomness is fundamental for secure communication and information processing. While continuous-variable optical systems offer an attractive platform for this task, certifying genuine quantum randomness in such setups remains challenging. We present a semi-device-independent scheme for randomness certification tailored to continuous-variable implementations, where the dimension assumption is operationally implemented by restricting state preparations to the two-level Fock subspace. Using standard homodyne and displacement-based measurements, we show that simple optical setups can achieve dimension-witness violations that certify positive min-entropy, even in the presence of realistic losses and misaligned reference frames. These results demonstrate that practical and scalable quantum randomness generation is achievable with minimal experimental complexity on continuous-variable platforms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05672 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Semi-device-independent randomness certification on discretized continuous-variable platforms Alves, Moisés Sena, Vitor L. Zamora, Santiago Sarubi, Tailan S. Junior, A. de Oliveira Tacla, Alexandre B. Chaves, Rafael Quantum Physics Randomness is fundamental for secure communication and information processing. While continuous-variable optical systems offer an attractive platform for this task, certifying genuine quantum randomness in such setups remains challenging. We present a semi-device-independent scheme for randomness certification tailored to continuous-variable implementations, where the dimension assumption is operationally implemented by restricting state preparations to the two-level Fock subspace. Using standard homodyne and displacement-based measurements, we show that simple optical setups can achieve dimension-witness violations that certify positive min-entropy, even in the presence of realistic losses and misaligned reference frames. These results demonstrate that practical and scalable quantum randomness generation is achievable with minimal experimental complexity on continuous-variable platforms. |
| title | Semi-device-independent randomness certification on discretized continuous-variable platforms |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.05672 |