Experimental anonymous quantum conferencing
Fuente:
arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866910584883118080 |
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| author | Webb, Jonathan W. Ho, Joseph Grasselli, Federico Murta, Gláucia Pickston, Alexander Ulibarrena, Andrés Fedrizzi, Alessandro |
| author_facet | Webb, Jonathan W. Ho, Joseph Grasselli, Federico Murta, Gláucia Pickston, Alexander Ulibarrena, Andrés Fedrizzi, Alessandro |
| contents | Anonymous quantum conference key agreement (AQCKA) allows a group of users within a network to establish a shared cryptographic key without revealing their participation. Although this can be achieved using bi-partite primitives alone, it is costly in the number of network rounds required. By allowing the use of multi-partite entanglement, there is a substantial efficiency improvement. We experimentally implement the AQCKA task in a six-user quantum network using Greenberger-Horne-Zeilinger (GHZ)-state entanglement and obtain a significant resource cost reduction in line with theory when compared to a bi-partite-only approach. We also demonstrate that the protocol retains an advantage in a four-user scenario with finite key effects taken into account. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_14158 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Experimental anonymous quantum conferencing Webb, Jonathan W. Ho, Joseph Grasselli, Federico Murta, Gláucia Pickston, Alexander Ulibarrena, Andrés Fedrizzi, Alessandro Quantum Physics Anonymous quantum conference key agreement (AQCKA) allows a group of users within a network to establish a shared cryptographic key without revealing their participation. Although this can be achieved using bi-partite primitives alone, it is costly in the number of network rounds required. By allowing the use of multi-partite entanglement, there is a substantial efficiency improvement. We experimentally implement the AQCKA task in a six-user quantum network using Greenberger-Horne-Zeilinger (GHZ)-state entanglement and obtain a significant resource cost reduction in line with theory when compared to a bi-partite-only approach. We also demonstrate that the protocol retains an advantage in a four-user scenario with finite key effects taken into account. |
| title | Experimental anonymous quantum conferencing |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2311.14158 |