Genesis Quantum Inc. & GQT Korea Inc.

Quantum isn’t tomorrow.
It’s now.

We are the ones building it.

Initial Release Single-Photon Detector · Initial Release · Gated focus · Free-running supported · Delivery starts May 2026

Technology

Single-Photon Detection as a Quantum Platform Engine

At the heart of GQT is Single-Photon Detection (SPD). Our SPAD and SPD technologies compress complex quantum optics into photonic and silicon chips — delivering extreme sensitivity, compact form factor, and commercially viable quantum infrastructure.

SPAD / SPD

Single-photon precision

Detect a single photon with up to 10⁸× gain. Our InGaP/GaAs and InGaAs SPAD technologies are designed for harsh environments and national-scale security infrastructure.

Integrated QPIC

From racks to palm-sized

Quantum photonic integrated circuits (QPIC) shrink full telecom racks into palm-sized modules — enabling dense deployment in encryptors, sensors, and edge devices.

Platform engine

One core, many products

The same SPD engine powers miniaturized QKD, Single-Photon LiDAR, and quantum biosensors — compounding design, testing, and manufacturing efficiency.

Products

Four products, one quantum engine

One single-photon engine powers four product lines — SPD instrumentation, compact QKD, Single-Photon LiDAR, and a quantum biosensor platform.

GQT Single-Photon Detector (SPD)

Stand-alone instrument · Lab & OEM

A stand-alone single-photon instrumentation platform designed for predictable deployment in timing-critical applications and early field environments.

Initial Release: Focused on gated operation for repeatable timing control in applications such as QKD and TCSPC. Free-running operation is also supported. High-speed gate operation will be addressed in subsequent releases.

  • • Gated operation focus for predictable timing control
  • • Free-running operation supported
  • • Instrument-level gating & timing electronics
  • • Shared SPD engine across QKD, LiDAR, and biosensor roadmaps
SPD module

Miniaturized QKD System

National quantum-safe networks

95% smaller and 85% cheaper than legacy racks — enabling nation-scale QKD deployment across telcos and defense networks.

  • • QtTH-ready roadmap with ASIC integration
  • • Designed for encryptor convergence
  • • One of the world’s smallest QKD systems
New compact QKD hardware

Single-Photon LiDAR

3D sensing · Defense & rescue

Concept-stage LiDAR architecture using SPAD arrays and precise timing electronics, aimed at imaging through fog, smoke, and low light for defense and search-and-rescue missions.

  • • Photon-counting 3D depth imaging (under development)
  • • Designed for harsh environments where classical LiDAR fails
  • • Shares the same SPD engine as QKD & biosensors
Single-Photon LiDAR concept

Quantum Biosensor Platform

POCT · Early cancer & One-Health

A roadmap-stage biosensor platform using quantum-grade photon sensitivity for ultra-low-concentration biomarker detection in POCT, early cancer screening, and One-Health diagnostics.

  • • Enzyme-free, single-photon based molecular readout
  • • Aligned with global One-Health and POCT trends
  • • Built on the same SPD/QPIC engine as other products
Quantum biosensor processing

Initial Production Run Allocation

Allocation is open for the initial production run of GQT’s single-photon instrumentation platform. This is not a promotional campaign, but a limited allocation to secure production and delivery slots for early deployment partners.

  • • Allocation deadline: March 31, 2026
  • • Delivery starts: May 2026
  • • Initial Release focused on gated operation
  • • Free-running operation supported · High-speed gate in subsequent releases
Request allocation →

QKD

Legacy vs. Compact QKD hardware

Side-by-side comparison of rack-based legacy QKD versus GQT’s compact photonic-integrated QKD module.

Legacy QKD

Legacy QKD hardware

Rack-based QKD system with large footprint, higher power consumption, and high deployment cost.

Compact QKD

Compact QKD hardware

GQT’s compact photonic-integrated QKD module designed to fit next to modern encryptors.

GQT PIC Technology

Receiver – dummy – Sender

LiDAR

Single-Photon LiDAR

Single-Photon LiDAR provides high-sensitivity 3D imaging in low-visibility environments such as fog, smoke, haze, and dust. Using SWIR InGaAs SPAD arrays and time-correlated single-photon counting (TCSPC), it enables reliable depth sensing where classical LiDAR and EO/IR cameras fail.

Principle: How Single-Photon LiDAR Works

Single-Photon LiDAR detects individual photons returned from the scene, even under heavy scattering conditions. SPAD arrays combined with TCSPC measure the precise arrival time of single photons, reconstructing a high-resolution 3D depth map with extremely low signal levels.

  • • Detects single photons returned through fog, haze, smoke, and aerosols.
  • • TCSPC measures photon arrival times with picosecond-level precision.
  • • Enables 3D imaging in low-light, obscured, or GPS-denied environments.
LiDAR principle diagram

LiDAR Concept

Applications of Single-Photon LiDAR

A 256×256 SWIR InGaAs SPAD-based Single-Photon LiDAR core can be deployed across multiple high-value sectors:

  • • Defense / ISR / Tactical LADAR – long-range 3D target acquisition, fog/smoke penetration.
  • • Aerial & Spaceborne Mapping – drone, aircraft, and satellite-based 3D terrain & environment sensing.
  • • Autonomous Driving / ADAS – high-resolution LiDAR in challenging weather & lighting conditions.
  • • Robotics & SLAM – indoor, underground, mining, and tunnel navigation.
  • • Fire & Disaster Response – victim detection and navigation in dense smoke.
  • • Smart Factory & 3D Metrology – industrial inspection and high-precision measurement.
  • • Environmental & Atmospheric Profiling – fog, aerosol, and visibility monitoring.
  • • Quantum Communications / FSO Alignment – single-photon beam tracking and pointing.
  • • Quantum Imaging & Time-Resolved Spectroscopy – scientific and astronomical applications.
  • • NIR-II / SWIR Biomedical Imaging (Research) – early-stage research applications.
  • • Security & Surveillance – night-time 3D sensing for perimeter and facility protection.

Biosensor

Quantum Biosensor Platform

Enzyme-free, single-photon based molecular diagnostics for POCT and early cancer detection — building a roadmap-stage platform aligned with global One-Health initiatives.

POCT & One-Health

Fast testing concepts for human and veterinary applications, aligned with global One-Health diagnostics.

Early cancer diagnostics

Targeting ultra-low concentration biomarkers using quantum-grade photon sensitivity, pushing toward truly early-stage detection.

Quantum Biosensor – Video Overview

Quantum Bio Sensor Processing

Quantum Bio Sensor Processing

A patented technology of Genesis Quantum Inc.

Media

In the news

    Edit media links (현재 탭에 적용)

    About

    From Korea’s first quantum lab to GQT

    GQT Korea was founded by the team that built Korea’s first industrial quantum communication lab at SK Telecom and contributed to global QKD commercialization at ID Quantique. We bring quantum to the real world: deployed, certified, manufacturable.

    Headquartered in Daejeon, Korea with a U.S. presence in Alexandria, VA, GQT builds quantum infrastructure that protects and powers allied nations.

    Snapshot

    • • Veterans of SK Telecom & ID Quantique
    • • Multi-product platform: SPD, QKD, LiDAR, Biosensor
    • • Backed by national R&D and strategic defense programs
    • • Focused on critical infrastructure and healthcare

    Quantum key distribution demonstration – 2015

    KBS coverage of Korea’s QKD demonstration at the U.S. Capitol Rayburn House Office Building (2015).

    National convergence QKD network – 2021

    National convergence QKD network

    World’s first nationwide QKD network deployment (Korea, 2021)

    Team

    Builders behind Korea and the World's quantum infrastructure

    A team with decades of experience in QKD deployment, SPAD/SPD development, LiDAR architectures, biosensing, and national-scale quantum programs.

    Sean Seunghwan Kwak

    Founder & CEO

    Sean Seunghwan Kwak

    Founded Korea’s first industrial quantum lab at SK Telecom and later served as EVP at ID Quantique, now leading GQT’s multi-product quantum platform.

    “I'm not a theorist — I bring quantum to the real world.”

    Chan-yong Park

    EVP · SPAD & SPAD Array

    Chan-yong Park, Ph.D.

    • • Pioneered InGaP/GaAs SPAD research with high radiation resistance
    • • Developed world-class InGaAs SPADs; commercialized in 2017
    SB Cho

    VP · SPD

    SB Cho, Ph.D.

    • • Led QKD development for 21 years at ETRI, SK Telecom, and IDQ
    • • Expert in single-photon detectors and APDs
    Bob Jeongsik Cho

    VP · Quantum Optics

    Bob Jeongsik Cho, Ph.D.

    • • 20 years in quantum cryptography systems (ETRI, SKT, IDQ)
    • • Led commercialization of QKD systems in Korea
    Soo-hyun Baek

    VP · SPAD & SPAD Array

    Soo-hyun Baek, Ph.D.

    • • Led commercialization of QKD SPD modules ($7M+ sales)
    • • Developed detector analysis systems and SPAD arrays for LiDAR
    Cris Kim

    VP · Quantum SoC

    Cris Kim, Ph.D.

    • • Led SoC development at Samsung, SK Telecom and IDQ
    • • Commercialized QRNG chip used in Samsung Galaxy Quantum
    Jiyoung Kim

    Inside Director · Operations

    Jiyoung Kim

    Oversees corporate operations, finance, and governance, ensuring GQT’s roadmap aligns with execution and compliance.

    Hongcheol Kwon

    Outside Director · CPA

    Hongcheol Kwon

    Provides governance and financial oversight as GQT expands across Korea, the U.S., and allied markets.

    Contact

    Let’s build the quantum infrastructure together

    Telcos, defense contractors, hospital systems, governments, and investors — we’re ready to build with you.

    Email · yj.hong@genesisqt.com

    Phone · +82 2 448 7002

    Website · www.genesisqt.com

    Korea Offices

    HQ
    2F, #204, 35 Techno 9-ro, Yuseong-gu, Daejeon, Republic of Korea

    R&D Lab
    B-1519, 201 Songpa-daero, Songpa-gu, Seoul, Republic of Korea

    Bio Research Lab
    B1025-2, Support Center Building, 119 Songdomunhwa-ro, Yeonsu-gu, Incheon, Republic of Korea

    U.S. Office

    US Office
    4601 Pinecrest Office Park Dr #E, Alexandria, VA 22312, USA

    By submitting, you agree that GQT may contact you about quantum infrastructure, pilots, and opportunities.