19 citations · 65 across the 11 of their papers we have counts for
12 papers
Prior Entanglement Exponentially Improves One-Server Quantum Private Information Retrieval for Quantum Messages
Seunghoan Song, Francois Le Gall, Masahito Hayashi
Quantum private information retrieval (QPIR) for quantum messages is a quantum communication task, in which a user retrieves one of the multiple quantum states from the server with…
Two-Server Oblivious Transfer for Quantum Messages
Masahito Hayashi, Seunghoan Song
Oblivious transfer is considered as a cryptographic primitive task for quantum information processing over quantum network. Although it is possible with two servers, any existing p…
Unified Approach to Secret Sharing and Symmetric Private Information Retrieval with Colluding Servers in Quantum Systems
Masahito Hayashi, Seunghoan Song
This paper unifiedly addresses two kinds of key quantum secure tasks, i.e., quantum versions of secret sharing (SS) and symmetric private information retrieval (SPIR) by using mult…
On the Capacity of Quantum Private Information Retrieval from MDS-Coded and Colluding Servers
Matteo Allaix, Seunghoan Song, Lukas Holzbaur +3
In quantum private information retrieval (QPIR), a user retrieves a classical file from multiple servers by downloading quantum systems without revealing the identity of the file.…
Quantum Private Information Retrieval for Quantum Messages
Seunghoan Song, Masahito Hayashi
Quantum private information retrieval (QPIR) for quantum messages is the protocol in which a user retrieves one of the multiple quantum states from one or multiple servers without…
Equivalence of Non-Perfect Secret Sharing and Symmetric Private Information Retrieval with General Access Structure
Seunghoan Song, Masahito Hayashi
We study the equivalence between non-perfect secret sharing (NSS) and symmetric private information retrieval (SPIR) with arbitrary response and collusion patterns. NSS and SPIR ar…
Capacity of Quantum Private Information Retrieval with Colluding Servers
Seunghoan Song, Masahito Hayashi
Quantum private information retrieval (QPIR) is a protocol in which a user retrieves one of multiple files from non-communicating servers by downloading quantum system…
Quantum Capacity of Partially Corrupted Quantum Network
Masahito Hayashi, Seunghoan Song
We discuss a quantum network, in which the sender has outgoing channels, the receiver has incoming channels, each channel is of capacity , each intermediate node app…
Capacity of Quantum Private Information Retrieval with Collusion of All But One of Servers
Seunghoan Song, Masahito Hayashi
Quantum private information retrieval (QPIR) is a protocol in which a user retrieves one of multiple classical files by downloading quantum systems from non-communicating $\mathsf{…
Capacity of Quantum Private Information Retrieval with Multiple Servers
Seunghoan Song, Masahito Hayashi
We study the capacity of quantum private information retrieval (QPIR) with multiple servers. In the QPIR problem with multiple servers, a user retrieves a classical file by downloa…
Quantum Network Code for Multiple-Unicast Network with Quantum Invertible Linear Operations
Seunghoan Song, Masahito Hayashi
This paper considers the communication over a quantum multiple-unicast network where r sender-receiver pairs communicate independent quantum states. We concretely construct a quant…
Secure Quantum Network Code without Classical Communication
Seunghoan Song, Masahito Hayashi
We consider the secure quantum communication over a network with the presence of a malicious adversary who can eavesdrop and contaminate the states. The network consists of noisele…