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SDT

Category: AI Infrastructure

A leading full-stack quantum infrastructure company specializing in Quantum Design and Manufacturing (QDM) to bridge the gap between laboratory research and industrial-scale quantum applications. SDT was founded in 2017. The company is led by Jiwon Yune. Based in Seoul, South Korea. Team size: 70-150. Total funding raised: ~$35M. Latest round: Hybrid AI-Quantum ($20.6M, Jan 2026). Key investors include ["Praxis Capital Partners","NH Investment & Securities","Shinhan Venture Investment","DS Asset Management","GS","KB Investment","AG Investment","K2 Investment","IBK Investment & Securities"].

Founded
2017
Headquarters
Seoul, South Korea
Team size
70-150
Total funding
~$35M

Value proposition

Provides the world's first hardware-agnostic, commercial-grade quantum-classical hybrid infrastructure, enabling organizations to deploy quantum computing and secure communication without building proprietary hardware from scratch.

Products and solutions

["Kreo SC/NA: Superconducting and Neutral Atom-based full-stack quantum computers.","QuREKA: A cloud-based hybrid quantum computing platform natively supporting NVIDIA CUDA-Q.","CryoRack: High-performance dilution refrigerator systems for QPU cooling.","QCU (Quantum Control Unit): High-precision control electronics for qubit manipulation.","Quantum Security: Quantum Key Distribution (QKD) and Quantum Random Number Generators (QRNG).","Quantum Sensing: Distributed Acoustic Sensing (DAS) for industrial monitoring."]

Unique value

SDT is the first Korean company to commercialize a full-stack quantum-classical hybrid system, offering a 'modular' approach where customers can swap QPU (Quantum Processing Unit) types while maintaining the same control infrastructure.

Target customer

National research institutes (KISTI, KRISS), academic institutions (KAIST), global technology enterprises (LG Electronics), and quantum-focused startups (QAI).

Industries served

["Quantum Computing","Cybersecurity & Defense","Artificial Intelligence Infrastructure","Industrial Digital Transformation (DX)","Scientific Research & Academia"]

Technology advantage

Hardware-agnostic control technology compatible with multiple qubit modalities (superconducting, neutral atom, ion trap); deep integration with NVIDIA's CUDA-Q allows seamless switching between classical GPU and quantum QPU workloads.

How they differentiate

SDT distinguishes itself through its 'Quantum Design and Manufacturing' (QDM) model. Unlike companies focused solely on proprietary qubit modalities, SDT provides a full-stack, hardware-agnostic infrastructure. This includes precision control electronics (QCU), dilution refrigerators (CryoRack), and the QuREKA cloud platform, which allow customers to integrate and swap different types of QPUs (superconducting, neutral atom, etc.) within a standardized modular framework.

Main competitors

["ID Quantique (IDQ)","EYL","Rigetti Computing","IonQ"]

Key partnerships

["NVIDIA: Integration of CUDA-Q into the QuREKA platform.","Anyon Technologies: Technical collaboration and IP sharing for superconducting QPUs and cooling systems.","QuEra Computing: Strategic alliance for neutral atom quantum computing deployment.","KRISS & KISTI: Government-backed projects for building 1,000-qubit quantum systems and national quantum clouds.","LG Electronics: Joint development of quantum computing hardware for industrial use."]

Notable customers

["KISTI (Korea Institute of Science and Technology Information)","KRISS (Korea Research Institute of Standards and Science)","LG Electronics","KAIST","QAI"]

Major milestones

["Secured a 30B KRW ($22.5M) Growth round led by Praxis Capital in Jan 2026","Successfully closed a 20B KRW Pre-IPO funding round in Dec 2024","Joined the QuEra Quantum Alliance to deploy neutral atom quantum computing in June 2024","Integrated NVIDIA CUDA-Q into the QuREKA platform for hybrid quantum-classical computing in 2024","Selected as the primary developer for South Korea's national quantum computing cloud infrastructure (KISTI) in 2022"]

Growth metrics

The company has nearly tripled its cumulative funding within two years (2024–2026), moving from Series B to a Pre-IPO and subsequent Growth/Bridge round, with a target for an IPO in 2025–2026.

Market positioning

Global full-stack quantum infrastructure and manufacturing leader

Geographic focus

South Korea, North America, and Asia-Pacific

Patents and IP

Holds extensive intellectual property (IP) in quantum signal processing, FPGA-based edge computing, and quantum-safe communication; recently integrated key cryogenic IP through a strategic partnership with Anyon Technologies.

About Jiwon Yune

Founder and CEO of SDT. Previously a researcher at the Korea Institute of Science and Technology (KIST) Quantum Information Research Group. He holds degrees in Physics and Electrical Engineering from MIT and conducted research at the MIT-Harvard Center for Ultracold Atoms focusing on diamond-based quantum computing.

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