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QuSide

Other B2B Software · Barcelona, Spain · Founded 2017

Quantum random number generators for cybersecurity and computation MoreLess

QuSide Technologies, S.L. is a quantum technology company that designs and manufactures quantum random number generators (QRNGs) and processing solutions for cybersecurity and high-performance computing applications. Founded in 2017 as a spin-off from the Institute of Photonic Sciences (ICFO) in Barcelona, Spain, the company is the result of over a decade of research into quantum and photonic technologies. The founding team includes Carlos Abellan (CEO), Domenico Tulli (CTO), Waldimar Amaya (SVP Engineering), Valerio Pruneri, and Morgan Mitchell. Abellan, who holds a PhD in quantum technologies from ICFO, co-invented the quantum randomness technologies that were transferred to the company.

QuSide’s core business revolves around providing a foundational layer of security and computational efficiency through truly random numbers. Unlike pseudo-random number generators that rely on predictable algorithms, QuSide's QRNGs harness the inherent unpredictability of quantum mechanics, specifically the phase diffusion in semiconductor lasers, to generate entropy. This approach provides a verifiable source of randomness essential for robust cryptographic applications, including post-quantum cryptography and quantum key distribution (QKD), protecting data from current and future threats posed by quantum computers. The company serves clients in markets such as data centers, finance, insurance, logistics, defense, and telecommunications.

The company's product portfolio includes several QRNG modules and chips. The QN100 is a quantum entropy source chip that can generate over 1 Gbps of random digits. The Garnet™ Series offers PCIe modules with speeds from 100 Mbit/s to 1 Gbit/s, while the Nellite™ Series provides FMC modules for FPGA integration. QuSide has also developed the Ruby™ Series, a QRNG security chipset for embedded applications. For high-performance computing, the company offers the Randomness Processing Unit (RPU), a hardware accelerator designed to offload and speed up randomized workloads like Monte Carlo simulations by up to 10 times with significantly less energy consumption. QuSide has established partnerships with companies like Thales, Telefónica, and Equinix to integrate its technology and expand its market reach.

Since its inception, QuSide has secured more than $10.9 million in funding over several rounds, including investments from Bullnet Capital, Trumpf Ventures, and the EIC Fund. This capital is being used to scale up production of its semiconductor chips and accelerate growth in high-volume markets.

Keywords: quantum random number generation, QRNG, cybersecurity, quantum computing, entropy source, hardware security, randomness processing unit, post-quantum cryptography, quantum key distribution, photonic integrated circuits, semiconductor, high-performance computing, data security, financial modeling, Monte Carlo simulation, cryptography, network security, verifiable entropy, quantum technology, secure connectivity

Talent graph

QuSide's talent

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Team profiled 15 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

7 investors on QuSide's cap table

Sourced from Dealroom's funding and investor records.

Seed 1 investor entered at this stage
European Innovation Council
Series A 6 investors entered at this stage
TRUMPF Venture
Bullnet Capital
TechVision Fonds
Mission
EIC Fund
Catalan Institute of Finance

Global footprint

Where QuSide has talent and traffic

Workforce by country
6 countries with
team presence
🇪🇸 Spain88.5%
🇺🇸 United States3.9%
🇬🇧 United Kingdom1.9%
🇮🇪 Ireland1.9%
🇦🇪 United Arab Emirates1.9%
Top 5 of 6 shown

Market sentiment

What the market is saying about QuSide

An AI-synthesized read of the highest-engagement posts about QuSide on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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