Unconditional security of entanglement-based continuous-variable quantum secret sharing
The need for secrecy and security is essential in communication. Secret sharing is a conventional protocol to distribute a secret message to a group of parties, who cannot access it individually but need to cooperate in order to decode it. While several variants of this protocol have been investigat...
| Main Authors: | , , , |
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| Format: | Article |
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American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/40779/ |
| _version_ | 1848796131780198400 |
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| author | Kogias, Ioannis Xiang, Yu He, Qiongyi Adesso, Gerardo |
| author_facet | Kogias, Ioannis Xiang, Yu He, Qiongyi Adesso, Gerardo |
| author_sort | Kogias, Ioannis |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The need for secrecy and security is essential in communication. Secret sharing is a conventional protocol to distribute a secret message to a group of parties, who cannot access it individually but need to cooperate in order to decode it. While several variants of this protocol have been investigated, including realizations using quantum systems, the security of quantum secret sharing schemes still remains unproven almost two decades after their original conception. Here we establish an unconditional security proof for entanglement-based continuous-variable quantum secret sharing schemes, in the limit of asymptotic keys and for an arbitrary number of players. We tackle the problem by resorting to the recently developed one-sided device-independent approach to quantum key distribution. We demonstrate theoretically the feasibility of our scheme, which can be implemented by Gaussian states and homodyne measurements, with no need for ideal single-photon sources or quantum memories. Our results contribute to validating quantum secret sharing as a viable primitive for quantum technologies. |
| first_indexed | 2025-11-14T19:43:07Z |
| format | Article |
| id | nottingham-40779 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:07Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-407792020-05-04T18:30:54Z https://eprints.nottingham.ac.uk/40779/ Unconditional security of entanglement-based continuous-variable quantum secret sharing Kogias, Ioannis Xiang, Yu He, Qiongyi Adesso, Gerardo The need for secrecy and security is essential in communication. Secret sharing is a conventional protocol to distribute a secret message to a group of parties, who cannot access it individually but need to cooperate in order to decode it. While several variants of this protocol have been investigated, including realizations using quantum systems, the security of quantum secret sharing schemes still remains unproven almost two decades after their original conception. Here we establish an unconditional security proof for entanglement-based continuous-variable quantum secret sharing schemes, in the limit of asymptotic keys and for an arbitrary number of players. We tackle the problem by resorting to the recently developed one-sided device-independent approach to quantum key distribution. We demonstrate theoretically the feasibility of our scheme, which can be implemented by Gaussian states and homodyne measurements, with no need for ideal single-photon sources or quantum memories. Our results contribute to validating quantum secret sharing as a viable primitive for quantum technologies. American Physical Society 2017-01-12 Article PeerReviewed Kogias, Ioannis, Xiang, Yu, He, Qiongyi and Adesso, Gerardo (2017) Unconditional security of entanglement-based continuous-variable quantum secret sharing. Physical Review A, 95 (1). 012315. ISSN 2469-9934 http://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.012315 doi:10.1103/PhysRevA.95.012315 doi:10.1103/PhysRevA.95.012315 |
| spellingShingle | Kogias, Ioannis Xiang, Yu He, Qiongyi Adesso, Gerardo Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title | Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title_full | Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title_fullStr | Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title_full_unstemmed | Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title_short | Unconditional security of entanglement-based continuous-variable quantum secret sharing |
| title_sort | unconditional security of entanglement-based continuous-variable quantum secret sharing |
| url | https://eprints.nottingham.ac.uk/40779/ https://eprints.nottingham.ac.uk/40779/ https://eprints.nottingham.ac.uk/40779/ |