公开(公告)号：US20180212795A1

公开(公告)日：2018-07-26

申请号：US15663477

申请日：2017-07-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chei-Yol KIM ,  Dong-Oh KIM ,  Young-Kyun KIM ,  Young-Chul KIM ,  Hong-Yeon KIM

IPC: H04L12/403 ,  G06F3/06

Abstract: Disclosed herein is a distributed file system using a torus network. The distributed file system includes multiple servers. The location of a master server may be determined to shorten the latency of data input/output. The location of the master server may be determined such that the distance between the master server and a node farthest away from the master server, among nodes, is minimized. When the location of the master server is determined, the characteristics of the torus network and the features of a propagation transmission scheme may be taken into consideration.

公开(公告)号：US20250061361A1

公开(公告)日：2025-02-20

申请号：US18802087

申请日：2024-08-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soo-Cheol OH ,  Young-Chul KIM ,  Chei-Yol KIM ,  Jin-Ho ON ,  Sang-Min LEE ,  Eun-Young CHO ,  Ki-Sung JIN ,  Gyu-Il CHA

IPC: G06N10/20

Abstract: Disclosed herein is an apparatus and method for executing a magic state distillation circuit in a logical qubit quantum system. The apparatus outputs a distilled magic state |Y>L by executing a magic state |Y>L distillation circuit in which multiple multi-target CNOT operations are performed in parallel and outputs a distilled magic state |A>L by executing a magic state |A>L distillation circuit in which multiple multi-target CNOT operations are performed in parallel. The magic state |Y>L distillation circuit is configured with three code blocks, code blocks 1 and 2 being configured with multiple multi-target CNOT operations and code block 3 being configured with SL operations and measurement operations, and the magic state |A>L distillation circuit is configured with three code blocks, code blocks 1 and 2 being configured with multiple multi-target CNOT operations and code block 3 being configured with TL+ operations and measurement operations.

公开(公告)号：US20240303523A1

公开(公告)日：2024-09-12

申请号：US18515564

申请日：2023-11-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang-Min LEE ,  Young-Chul KIM ,  Soo-Cheol OH ,  Jin-Ho ON ,  Ki-Sung JIN ,  Gyu-Il CHA

IPC: G06N10/40

CPC classification number: G06N10/40

Abstract: Disclosed herein are an apparatus and method for performing a fault-tolerant logical Hadamard gate operation. The apparatus is configured to perform a transversal logical Hadamard (H) operation of defining a logical quantum state and logical operators of a Hadamard-transformed logical qubit on a logical qubit of a prepared encoding flavor having an arbitrary quantum state, deform a boundary of the logical qubit while maintaining the logical quantum state using a boundary deformation technology, and perform an automatic flip of transforming a flavor of the logical qubit by flipping a rotated surface code while maintaining the logical quantum state and the definition of logical operators.