# SDT

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/sdt

- Industry: Software
- Headquarters: Seoul, South Korea
- Website: www.sdt.inc
- Total disclosed funding: $18M
- Latest round: Series B (Mar 22, 2023)
- Investors on record: 11

## About

Based in South Korea, SDT Inc. develops advanced quantum-enhanced products aimed at improving data processing and computational efficiency across multiple sectors, including quantum computing and communication. Founded in 2017, SDT Inc. operates from its headquarters in Seoul, South Korea. The company focuses on developing quantum technology solutions and has completed a total of 9 funding deals to date. Recently, on January 2026, SDT Inc. raised KRW 30 billion in venture funding led by new investor Praxis Capital Partners, with participation from another new investor NH Investment & Securities. CEO Ji-won Yoon has been pivotal in steering the company’s vision and strategy. SDT Inc. specializes in quantum-enhanced products designed to enhance data processing capabilities for various sectors, including quantum computing and communication. Key products include the PGU (Pulse Generator Unit) for precise time synchronization, the QCU (Qubit Controller Unit) for qubit manipulation, the CCU (Coincidence Counting Unit) for detecting simultaneous signals, and the TTMU (Time Tagging Measurement Unit) for high-precision time capture. The company also offers intelligent analytics through the SDT Cloud platform and specialized devices for industrial applications. In 2022, SDT Inc. reported a revenue of KRW 479,873.6. Following a significant funding round in January 2026, SDT Inc. plans to develop next-generation infrastructure with artificial intelligence data centers and pursue an initial public offering within the year.

## Funding rounds

- Series B, Mar 22, 2023, $18M — KB Investment, Smilegate Investment, Shinhan Capital, AG Investment, K2 Investment Partners, Laguna Investment, Kona Venture Partners, GS Holdings, DS Asset Management
- Seed, Jun 1, 2019 — Posco Investment, Korea Tech Incubator for Startup

## Investors

- Posco Investment (https://capitalatlas.ai/funds/posco-investment) — Seed
- Korea Tech Incubator for Startup — Seed
- KB Investment (https://capitalatlas.ai/funds/kb-investment) — Series B
- Smilegate Investment (https://capitalatlas.ai/funds/smilegate-investment) — Series B
- Shinhan Capital (https://capitalatlas.ai/funds/shinhan-capital) — Series B
- AG Investment (https://capitalatlas.ai/funds/ag-investment) — Series B
- K2 Investment Partners (https://capitalatlas.ai/funds/k2-investment-partners) — Series B
- Laguna Investment (https://capitalatlas.ai/funds/laguna-investment) — Series B
- Kona Venture Partners (https://capitalatlas.ai/funds/kona-venture-partners) — Series B
- GS Holdings — Series B
- DS Asset Management (https://capitalatlas.ai/funds/ds-asset-management) — Series B