Certifying semi-device-independent security via wave-particle duality experiments
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
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| _version_ | 1866908429347454976 |
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| author | Raj, Chithra Prasad, Tushita Chaturvedi, Anubhav Pollyceno, Lucas Spegel-Lexne, Daniel Gómez, Santiago Argillander, Joakim Alarcón, Alvaro Xavier, Guilherme B. Pawłowski, Marcin Dieguez, Pedro R. |
| author_facet | Raj, Chithra Prasad, Tushita Chaturvedi, Anubhav Pollyceno, Lucas Spegel-Lexne, Daniel Gómez, Santiago Argillander, Joakim Alarcón, Alvaro Xavier, Guilherme B. Pawłowski, Marcin Dieguez, Pedro R. |
| contents | Wave-particle duality is known to be equivalent to an entropic uncertainty relation based on the min- and max-entropies, which have a clear operational meaning in quantum cryptography. Here, we derive a connection between wave-particle relations and the semi-device-independent (SDI) security framework. In particular, we express an SDI witness entirely in terms of two complementary interferometric quantities: visibility and input distinguishability. Applying a symmetry condition to the interferometric quantities, we identify a scenario in which the classical bound is violated and the security condition is met in wave-particle experiments with a tunable beam splitter. This enables the certification of non-classicality and the positivity of the key rate directly from complementary interferometric quantities. Moreover, we perform a proof-of-principle experiment using orbital-angular-momentum encoded quantum states of light in a tunable interferometer, validating our theoretical predictions. Finally, we analyze an improved bound on the SDI security condition, effectively enlarging the parameter region where secure communication can be certified. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_00679 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Certifying semi-device-independent security via wave-particle duality experiments Raj, Chithra Prasad, Tushita Chaturvedi, Anubhav Pollyceno, Lucas Spegel-Lexne, Daniel Gómez, Santiago Argillander, Joakim Alarcón, Alvaro Xavier, Guilherme B. Pawłowski, Marcin Dieguez, Pedro R. Quantum Physics Wave-particle duality is known to be equivalent to an entropic uncertainty relation based on the min- and max-entropies, which have a clear operational meaning in quantum cryptography. Here, we derive a connection between wave-particle relations and the semi-device-independent (SDI) security framework. In particular, we express an SDI witness entirely in terms of two complementary interferometric quantities: visibility and input distinguishability. Applying a symmetry condition to the interferometric quantities, we identify a scenario in which the classical bound is violated and the security condition is met in wave-particle experiments with a tunable beam splitter. This enables the certification of non-classicality and the positivity of the key rate directly from complementary interferometric quantities. Moreover, we perform a proof-of-principle experiment using orbital-angular-momentum encoded quantum states of light in a tunable interferometer, validating our theoretical predictions. Finally, we analyze an improved bound on the SDI security condition, effectively enlarging the parameter region where secure communication can be certified. |
| title | Certifying semi-device-independent security via wave-particle duality experiments |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.00679 |