Electronics and Telecommunications Research Institute

Eun Ji Kim

Daesung Kwon

Changho Hong

Jingak Jang

Osung Kwon

Se Wan Ji

Younchang Jeong

Seok Koo Kim

Haeng-Seok Ko

Seok Ki Kim

Nayoung Kim

A quantum entity authentication apparatus and method. The quantum entity authentication apparatus includes a quantum state preparation unit for preparing an authentication quantum state that is generated based on an authentication key previously shared with an entity, a quantum channel verification unit for transmitting a quantum state, generated by performing an operation using a prestored unique operator on the authentication quantum state, to a quantum measurement device, and for verifying security of a quantum channel by using a result of Bell measurement and the authentication quantum state, the result of Bell measurement being revealed by the quantum measurement device for the quantum state, and a quantum entity authentication unit for, when the security of the quantum channel is verified, authenticating the entity using the result of the Bell measurement and the unique operator.

Quantum entity authentication apparatus and method

A quantum key distribution (QKD) node apparatus and a QKD method therein. The QKD node apparatus may include a QKD module for generating quantum keys and quantum key IDs, a quantum key synchronization management module for storing the quantum keys and the quantum key IDs as outbound and inbound quantum keys in a distributed manner and sharing the outbound and inbound quantum keys with a second QKD node apparatus, and a quantum key orchestration module for delivering a master key and a master key ID to a secure application connected therewith in response to a request for the master key with the ID of a second secure application and delivering a packet including the master key encrypted with the outbound quantum key shared with the second QKD node apparatus, the master key ID, and a quantum key ID, to the second QKD node apparatus.

Quantum key distribution node apparatus and method for quantum key distribution thereof

A single-photon detection method and apparatus. The single-photon detection method detects a single photon using a single-photon detection apparatus, and includes generating an output signal through a photon detector by receiving a light signal as an input, generating a negative voltage comparison result through a negative voltage comparator by receiving the output signal as an input, and generating a photon detection result based on the negative voltage comparison result.

Single-photon detection method and apparatus

Growing community of inventors

Daejeon, South Korea

Eun Ji Kim