Advances in device-independent quantum key distribution
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866916781379026944 |
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| author | Zapatero, Víctor van Leent, Tim Arnon, Rotem Liu, Wen-Zhao Zhang, Qiang Weinfurter, Harald Curty, Marcos |
| author_facet | Zapatero, Víctor van Leent, Tim Arnon, Rotem Liu, Wen-Zhao Zhang, Qiang Weinfurter, Harald Curty, Marcos |
| contents | Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Not only it allows for information-theoretic security based on quantum mechanics, but it relaxes the need to physically model the devices, hence fundamentally ruling out many quantum hacking threats to which non-DI QKD systems are vulnerable. In practice though, DI-QKD is very challenging. It relies on the loophole-free violation of a Bell inequality, a task that requires high quality entanglement to be distributed between distant parties and close to perfect quantum measurements, which is hardly achievable with current technology. Notwithstanding, recent theoretical and experimental efforts have led to the first proof-of-principle DI-QKD implementations. In this article, we review the state-of-the-art of DI-QKD by highlighting its main theoretical and experimental achievements, discussing the recent proof-of-principle demonstrations, and emphasizing the existing challenges in the field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2208_12842 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Advances in device-independent quantum key distribution Zapatero, Víctor van Leent, Tim Arnon, Rotem Liu, Wen-Zhao Zhang, Qiang Weinfurter, Harald Curty, Marcos Quantum Physics Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Not only it allows for information-theoretic security based on quantum mechanics, but it relaxes the need to physically model the devices, hence fundamentally ruling out many quantum hacking threats to which non-DI QKD systems are vulnerable. In practice though, DI-QKD is very challenging. It relies on the loophole-free violation of a Bell inequality, a task that requires high quality entanglement to be distributed between distant parties and close to perfect quantum measurements, which is hardly achievable with current technology. Notwithstanding, recent theoretical and experimental efforts have led to the first proof-of-principle DI-QKD implementations. In this article, we review the state-of-the-art of DI-QKD by highlighting its main theoretical and experimental achievements, discussing the recent proof-of-principle demonstrations, and emphasizing the existing challenges in the field. |
| title | Advances in device-independent quantum key distribution |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2208.12842 |