dorsal/arxiv
View SchemaContinuous Variable Quantum State Sharing via Quantum Disentanglement
| Authors | Andrew M. Lance, Thomas Symul, Warwick P. Bowen, Barry C. Sanders, Tomas Tyc, Timothy C. Ralph, Ping Koy Lam |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0411191 |
| URL | https://arxiv.org/abs/quant-ph/0411191 |
| DOI | 10.1103/PhysRevA.71.033814 |
| Journal | Published, Phys. Rev. A 71, 033814 (2005) |
Abstract
Quantum state sharing is a protocol where perfect reconstruction of quantum states is achieved with incomplete or partial information in a multi-partite quantum networks. Quantum state sharing allows for secure communication in a quantum network where partial information is lost or acquired by malicious parties. This protocol utilizes entanglement for the secret state distribution, and a class of "quantum disentangling" protocols for the state reconstruction. We demonstrate a quantum state sharing protocol in which a tripartite entangled state is used to encode and distribute a secret state to three players. Any two of these players can collaborate to reconstruct the secret state, whilst individual players obtain no information. We investigate a number of quantum disentangling processes and experimentally demonstrate quantum state reconstruction using two of these protocols. We experimentally measure a fidelity, averaged over all reconstruction permutations, of F = 0.73. A result achievable only by using quantum resources.
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"abstract": "Quantum state sharing is a protocol where perfect reconstruction of quantum\nstates is achieved with incomplete or partial information in a multi-partite\nquantum networks. Quantum state sharing allows for secure communication in a\nquantum network where partial information is lost or acquired by malicious\nparties. This protocol utilizes entanglement for the secret state distribution,\nand a class of \"quantum disentangling\" protocols for the state reconstruction.\nWe demonstrate a quantum state sharing protocol in which a tripartite entangled\nstate is used to encode and distribute a secret state to three players. Any two\nof these players can collaborate to reconstruct the secret state, whilst\nindividual players obtain no information. We investigate a number of quantum\ndisentangling processes and experimentally demonstrate quantum state\nreconstruction using two of these protocols. We experimentally measure a\nfidelity, averaged over all reconstruction permutations, of F = 0.73. A result\nachievable only by using quantum resources.",
"arxiv_id": "quant-ph/0411191",
"authors": [
"Andrew M. Lance",
"Thomas Symul",
"Warwick P. Bowen",
"Barry C. Sanders",
"Tomas Tyc",
"Timothy C. Ralph",
"Ping Koy Lam"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.033814",
"journal_ref": "Published, Phys. Rev. A 71, 033814 (2005)",
"title": "Continuous Variable Quantum State Sharing via Quantum Disentanglement",
"url": "https://arxiv.org/abs/quant-ph/0411191"
},
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