Quantum Private Information Retrieval From Coded and Colluding Servers
Quantum Private Information Retrieval From Coded and Colluding Servers
复制标题
从编码和共谋服务器检索量子私人信息
DOI:
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复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
C. Hollanti
中科院分区:
文献类型:
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作者:
Matteo Allaix;Lukas Holzbaur;Tefjol Pllaha;C. Hollanti
In the classical private information retrieval (PIR) setup, a user wants to retrieve a file from a database or a distributed storage system (DSS) without revealing the file identity to the servers holding the data. In the quantum PIR (QPIR) setting, a user privately retrieves a classical file by receiving quantum information from the servers. The QPIR problem has been treated by Song <italic>et al.</italic> in the case of replicated servers, both without collusion and with all but one servers colluding. In this paper, the QPIR setting is extended to account for maximum distance separable (MDS) coded servers. The proposed protocol works for any <inline-formula> <tex-math notation="LaTeX">$[n,k]$ </tex-math></inline-formula>-MDS code and <inline-formula> <tex-math notation="LaTeX">$t$ </tex-math></inline-formula>-collusion with <inline-formula> <tex-math notation="LaTeX">$t=n-k$ </tex-math></inline-formula>. Similarly to the previous cases, the rates achieved are better than those known or conjectured in the classical counterparts. Further, it is demonstrated how the protocol can adapted to achieve significantly higher retrieval rates from DSSs encoded with a locally repairable code (LRC) with disjoint repair groups, each of which is an MDS code.
DOI:
10.4086/toc.2012.v008a016
发表时间:
2011-07
期刊:
Theory Comput.
影响因子:
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作者:
F. Gall
通讯作者:
F. Gall
影响因子:
5.7
作者:
Wang, Yazhen
通讯作者:
Wang, Yazhen