Nippon Telegraph and Telephone Corporation

Mitsubishi Electric Corporation

Seiichiro Tani

Takeru Inoue

Toshiaki Miyazaki

Noriyuki Takahashi

Takahiro Murooka

Shinya Ishihara

Akihiro Mizutani

Ryo Hiromasa

Yuki Takeuchi

Yusuke Aikawa

A result confirmation unit () computes a state space probability that is a probability that a verification target device () has not correctly prepared a state space having a quantum state stored therein, a Pauli measurement probability that is a probability that the verification target device () has not correctly performed Pauli Z measurement and Pauli X measurement, and a magic state probability that is a probability that the verification target device () has not generated a magic state of CCZ. Then, using the state space probability, the Pauli measurement probability, and the magic state probability, the result confirmation unit () computes a degree of approximation between a quantum state and the magic state of CCZ at the verification target device () and measurement accuracies of the Pauli Z measurement and the Pauli X measurement on the quantum state at the verification target device ().

Classical computer, information processing method, and computer readable medium

A multicast data communication system is provided that has high security, and prevents problems such as an attack by a malicious user creating a great number of meaningless tables at nodes in the network. Clients regularly transmit request packets toward a server; a node receives the request packet, and subsequently receives a delivery-table-creation packet or a delivery packet from the server; if the node has no delivery table corresponding to the server, the node creates the delivery table, registers the addresses of the clients, and their request packet arrival times, and regularly transmits the request packet toward the server; when the node has received a delivery packet from the server, the node duplicates and delivers the delivery packet only to those clients whose request packet arrival times, registered in the delivery table, are within a fixed period from the arrival of the delivery packet.

Multicast data communication method, multicast data communication system, repeater, repeating method, and medium for storing repeating programs

Growing community of inventors

Atsugi, Japan

Seiichiro Tani