公开(公告)号：US20240167938A1

公开(公告)日：2024-05-23

申请号：US18513059

申请日：2023-11-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young-Ho KO ,  Chungheon BAEK ,  Hye Min KIM ,  Mireu LEE ,  Hyunhee CHO

IPC: G01N21/01

CPC classification number: G01N21/01

Abstract: Provided is a quantum imaging device. The device includes a first light source configured to generate first light, a first photon pair generation part configured to generate a first entangled photon pair using the first light, a first beam splitter configured to separate the first entangled photon pair into a first signal idler and a first signal line, a first detector configured to receive the first signal idler, a first mirror configured to provide the first signal line to a target, a second detector configured to receive the first signal line transmitted or reflected to the target, and a signal processor connected to the first and second detectors and configured to obtain a target image by comparing a measurement image with a reference image.

公开(公告)号：US20220141008A1

公开(公告)日：2022-05-05

申请号：US17488955

申请日：2021-09-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyongchun LIM ,  Chun Ju YOUN ,  Byung-seok CHOI ,  Young-Ho KO ,  Kap-Joong KIM ,  Minchul KIM ,  Ju Hee BAEK ,  Joong-Seon CHOE

IPC: H04L9/08

Abstract: Disclosed is a quantum key distribution system using an RFI (reference frame independent) QKD (quantum key distribution) protocol, which includes a first signal processing circuit that generates transmission basis information and transmission bit information, a quantum channel transmitter that generates a single photon or coherent light, and modulates the single photon or the coherent light based on the transmission basis information and the transmission bit information to generate a quantum signal, a quantum channel receiver that receives the quantum signal through a quantum channel and detects reception bit information from the quantum signal based on reception basis information, and a second signal processing circuit that generates the reception basis information, transmits the reception basis information to the first signal processing circuit through a public channel, and receives the transmission basis information from the first signal processing circuit through the public channel.

公开(公告)号：US20220066245A1

公开(公告)日：2022-03-03

申请号：US17464470

申请日：2021-09-01

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kap-Joong KIM ,  Chun Ju YOUN ,  Young-Ho KO ,  Minchul KIM ,  Kyongchun LIM ,  Byung-Seok CHOI ,  Joong-Seon CHOE

IPC: G02F1/035 ,  G02F1/01

Abstract: Provided is a light modulation device includes a substrate, a lower clad layer disposed on the substrate, a core layer disposed on the lower clad layer to extend in a first direction which is parallel to a top surface of the substrate, and an upper clad layer covering the core on the lower clad layer. The core layer includes a waveguide layer extending in the first direction; and photonic crystal structures disposed in the waveguide layer and periodically arranged along the first direction.

公开(公告)号：US20210306077A1

公开(公告)日：2021-09-30

申请号：US17203186

申请日：2021-03-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyongchun LIM ,  Chun Ju YOUN ,  Young-Ho KO ,  Kap Joong KIM ,  Minchul KIM ,  Byung-seok CHOI ,  Joong-Seon CHOE

IPC: H04B10/70 ,  H04L9/08

Abstract: Disclosed are a quantum information transmitter, a quantum communication system including the same, and an operating method of the quantum information transmitter. The quantum information transmitter includes a light source driver, a light source, and a light modulator. The light source driver generates a first light source driving signal having a first level and a second light source driving signal having a second level. The light source generates a first light signal having a first average number of photons in response to the first light source driving signal, and generates a second light signal having a second average number of photons in response to the second light source driving signal. The optical modulator modulates the first light signal to generate a target signal, and modulates the second light signal to generate a decoy signal.

公开(公告)号：US20220171124A1

公开(公告)日：2022-06-02

申请号：US17513820

申请日：2021-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young-Ho KO ,  Kap-Joong KIM ,  Hye Min KIM ,  Mireu LEE

IPC: G02B6/12 ,  H04B10/50

Abstract: Provided are a single-photon source device and a single-photon source system including same. The single-photon source device includes a substrate, a straight waveguide extending in a first direction on the substrate, a first coupling layer which is provided on the straight waveguide and has a first point defect, at least one first electrode which is adjacent to the first point defect and provided on the first coupling layer, a ring waveguide which is adjacent to the straight waveguide and provided on the substrate, and at least one second electrode provided on the ring waveguide.

公开(公告)号：US20210119076A1

公开(公告)日：2021-04-22

申请号：US17075966

申请日：2020-10-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young-Ho KO ,  Kap-Joong KIM ,  Byung-seok CHOI ,  Won Seok HAN

IPC: H01L33/06 ,  H01L33/40 ,  H01L33/10 ,  H01L25/075 ,  H01L33/00 ,  H01L33/30

Abstract: Disclosed are a quantum light source and an optical communication apparatus including the same. The quantum light source device includes a vertical reflection layer disposed on a substrate, a lower electrode layer disposed on the vertical reflection layer, a horizontal reflection layer disposed on the lower electrode layer, a quantum light source disposed in the horizontal reflection layer, and an upper electrode layer disposed on the horizontal reflection layer.

公开(公告)号：US20190219760A1

公开(公告)日：2019-07-18

申请号：US16215416

申请日：2018-12-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Duk Jun KIM ,  Young-Ho KO ,  Dong-Young KIM ,  Jong-Hoi KIM ,  Yongsoon BAEK ,  Jung-Ho SONG ,  Dong Hyo LEE ,  Byung-Seok CHOI ,  Won Seok HAN

IPC: G02B6/122

CPC classification number: G02B6/122 ,  G02B2006/12152

Abstract: An optical waveguide structure includes a substrate and a core structure disposed on the substrate. The substrate includes a first waveguide region, a second waveguide region, and a transition region between the first waveguide region and the second waveguide region. The core structure includes first core segments arranged in a first direction and a second direction crossing the first direction on the transition region. The core structure includes second core segments arranged in the first direction and the second direction on the second waveguide region. The first direction and the second direction are parallel to a top surface of the substrate.