IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
... (for ESS/CS/ES/ISS)
Tech. Rep. Archives
... (for ES/CS)
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2019-11-19 14:50
Capacity of Quantum Private Information Retrieval with Collusion of All But One of Servers
Seunghoan Song, Masahito Hayashi (Nagoya Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Quantum private information retrieval (QPIR) is the problem to retrieve one of f classical files by downloading quantum systems from non-communicating n servers each of which contains the copy of f files, while the identity of the retrieved file is unknown to each server. As an extension, we consider the (n − 1)-private QPIR that the identity of the retrieved file is secret even if any n − 1 servers collude, and derive the QPIR capacity for this problem which is defined as the maximum rate of the retrieved file size over the download size. For an even number n of servers, we show that the capacity of the (n − 1)-private QPIR is 2/n, when we assume that there are preexisting entanglements among the servers and require that no information of the non-retrieved files is downloaded. We construct an (n − 1)-private QPIR protocol of rate ⌈n/2⌉−1 and prove that the capacity is upper bounded by 2/n. The (n − 1)-private QPIR capacity is strictly greater than the classical counterpart.
Keyword (in Japanese) (See Japanese page) 
(in English) Private information retrieval / Information-theoretic security / Entanglement swapping / / / / /  
Reference Info. IEICE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF

Conference Information
Committee QIT  
Conference Date 2019-11-18 - 2019-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Gakushuin University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2019-11-QIT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Capacity of Quantum Private Information Retrieval with Collusion of All But One of Servers 
Sub Title (in English)  
Keyword(1) Private information retrieval  
Keyword(2) Information-theoretic security  
Keyword(3) Entanglement swapping  
Keyword(4)  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Seunghoan Song  
1st Author's Affiliation Nagoya University (Nagoya Univ.)
2nd Author's Name Masahito Hayashi  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Speaker
Date Time 2019-11-19 14:50:00 
Presentation Time 20 
Registration for QIT 
Paper #  
Volume (vol)  
Number (no)  
Page  
#Pages  
Date of Issue  


[Return to Top Page]

[Return to IEICE Web Page]


The Institute of Electronics, Information and Communication Engineers (IEICE), Japan