Arctic Instruments

Arctic Instruments is a Finnish quantum technology company founded in 2021 that specializes in developing superconducting microwave amplifiers and cryogenic electronics for quantum computing applications, providing ultra-low noise amplification solutions essential for quantum state readout and control in superconducting quantum processors, enabling improved fidelity and performance in quantum computing systems through advanced cryogenic amplifier technology designed for millikelvin temperature operation in dilution refrigerators.

Company Information

• Founded: 2021
• Country: Finland
• Website: https://arcticinstruments.com
• Categories: infrastructure

Key People

Unknown

Arque Systems

Arque Systems is a German quantum technology company founded in 2020 that develops silicon-spin qubit infrastructure and quantum device components, specializing in the design and fabrication of silicon-based quantum systems that leverage semiconductor manufacturing processes for scalable quantum computing applications, providing essential infrastructure components and services for the quantum computing industry with focus on CMOS-compatible quantum devices and silicon spin qubit technology development.

Company Information

• Founded: 2020
• Country: Germany
• Website: https://arquesystems.com
• Categories: infrastructure

Key People

Unknown

Bluefors

Bluefors is a Finnish cryogenic technology company founded in 2008 by Rob Blaauwgeers and Pieter Vorselman that has become the global market leader in ultra-low temperature cooling systems for quantum computing, with over 1,500 systems installed worldwide including their flagship LD System and KIDE Cryogenic Platform supporting over 1,000 qubits, pioneering liquid-free dilution refrigerator technology that achieves 10 millikelvin temperatures through a five-stage cascade approach, serving as the industry standard for superconducting quantum computers with over 700 employees globally and partnerships with Linde for large-scale quantum computing cooling solutions, recently launching enhanced cooling systems with doubled 4K cooling power and high-density flex wiring for high qubit count applications.

FormFactor

FormFactor provides quantum test and measurement solutions including cryogenic probing systems, quantum device test interfaces, and specialized measurement equipment that enable the characterization and testing of quantum devices at ultra-low temperatures required for quantum computing and quantum electronics applications.

Company Information

• Founded: 2020
• Country: USA
• Website: https://formfactor.com
• Categories: infrastructure

Key People

Unknown

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GlobalFoundries

GlobalFoundries leverages its advanced semiconductor manufacturing capabilities to provide quantum chip fabrication services for quantum computing companies, offering specialized processes and clean room facilities for producing superconducting qubits and quantum devices using established semiconductor manufacturing infrastructure.

Company Information

• Founded: 2021
• Country: USA
• Website: https://gf.com
• Categories: infrastructure

Key People

Unknown

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High Precision Devices

High Precision Devices (HPD) is a US cryogenic instrumentation company founded in 1993 that develops specialized ultra-low temperature measurement and control instruments for quantum computing and quantum research applications, providing precision thermometry, cryogenic switches, temperature controllers, and measurement electronics that enable accurate monitoring and control of quantum systems operating at millikelvin temperatures, serving quantum computing companies, research institutions, and national laboratories with high-precision instrumentation essential for quantum device characterization, quantum state control, and cryogenic system optimization in dilution refrigerators and other ultra-low temperature environments.

Keysight Technologies

Keysight Technologies provides advanced quantum test and measurement solutions including quantum computing test systems, qubit characterization tools, and precision measurement instruments that enable quantum researchers and manufacturers to validate, optimize, and scale quantum devices and systems across various quantum technology platforms.

Company Information

• Founded: 2014
• Country: USA
• Website: https://keysight.com
• Categories: infrastructure

Key People

Unknown

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Leiden Cryogenics

Leiden Cryogenics is a Dutch company founded in 1984 specializing in advanced cryogenic systems essential for quantum computing and quantum sensing applications, providing dilution refrigerators, cryostats, and ultra-low temperature systems required for superconducting quantum computers and quantum devices. The company supplies cryogenic infrastructure to quantum computing companies, research institutions, and national laboratories worldwide, enabling quantum systems to operate at the millikelvin temperatures necessary for quantum coherence and quantum computing operations. Leiden Cryogenics develops customized cryogenic solutions for quantum technology applications including quantum computers, quantum sensors, and fundamental physics research, with systems capable of reaching temperatures below 10 millikelvin required for advanced quantum devices. The company’s cryogenic expertise is critical for the quantum technology ecosystem, providing the ultra-cold environments necessary for superconducting qubits, trapped ion systems, and quantum sensing applications.

Low Noise Factory

Low Noise Factory develops ultra-low noise quantum amplifiers and cryogenic electronics essential for quantum computing and quantum sensing applications, providing high-performance amplification solutions that enable sensitive quantum measurements and precise quantum state readout in superconducting quantum systems.

Company Information

• Founded: 2019
• Country: Sweden
• Website: https://lownoisefactory.com
• Categories: infrastructure

Key People

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NanoQT

Nanofiber Quantum Technologies (NanoQT) is a Tokyo-based quantum technology company founded in 2022 that develops cavity-QED based, fiber-native quantum interconnects for networked quantum computing. The company secured $14 million in Series A funding in October 2025 led by Phoenix Venture Partners to build quantum interconnect infrastructure enabling scalable, modular quantum computing systems. NanoQT specializes in ultra-low-loss nanofiber cavity technology engineered for quantum processors, enabling strong atom-photon coupling and paving the way for scalable quantum interconnects that link quantum processing units via photons. With offices in Tokyo, Palo Alto, and College Park, the company focuses on developing quantum networking hardware essential for distributed quantum computing and quantum communication systems, contributing to Japan’s quantum technology ecosystem and advancing fiber-native quantum interconnect solutions for next-generation quantum computing architectures.

NKT Photonics

NKT Photonics is a Danish photonics company founded in 1999 that develops advanced photonic components and laser systems for quantum computing, quantum communication, and quantum sensing applications, providing specialized fiber lasers, photonic crystal fibers, and optical components that enable precise control and manipulation of quantum states in photonic quantum systems, serving quantum technology companies and research institutions with high-performance photonic infrastructure essential for quantum information processing and quantum optics experiments.

Oxford Instruments

Oxford Instruments is a UK-based scientific instruments company founded in 1959 as the first commercial spin-out from Oxford University that has become a leading provider of cryogenic systems essential for quantum computing, developing the Proteox family of dilution refrigerators including the ProteoxQX modular systems exceeding 3 meters in height with scalable workspace for large quantum processing units, providing 25 µW cooling power at 20 mK temperatures and comprehensive I/O capacity for qubit scale-up, serving quantum computing companies like Oxford Quantum Circuits and Rigetti before selling their NanoScience quantum-focused division to Quantum Design for £60 million to focus on other scientific instrument applications.

ParTec

ParTec develops quantum-HPC integration solutions and hybrid computing architectures that combine quantum processors with classical high-performance computing systems, enabling seamless integration of quantum computing capabilities into existing computational workflows for research institutions and enterprises.

Company Information

• Founded: 2020
• Country: Germany
• Website: https://par-tec.com
• Categories: infrastructure

Key People

Unknown

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Plessey Semiconductors

Plessey Semiconductors is a UK-based leading developer of advanced optoelectronic technology solutions, operating as the UK’s only LED manufacturer and the only LED maker globally commercializing LEDs on silicon substrates using their award-winning proprietary GaN-on-Silicon platform. The company has connections to quantum technology through partnerships integrating Nanoco Technologies’ cadmium-free quantum dot semiconductor nanoparticle technology into their monolithic microLED displays for augmented reality and virtual reality applications. With leading-edge 150mm and 200mm wafer processing facilities in Plymouth and comprehensive photonic characterization laboratories, Plessey provides full-field emissive microLED displays combining high-density RGB pixel arrays with CMOS backplanes, with potential applications in optical processing units for AI operations that are faster and more energy-efficient than traditional silicon devices.

QDevil

QDevil is a Danish quantum electronics company founded in 2016 that develops precision electronic instruments and components for quantum computing and quantum research, specializing in ultra-low noise electronics, quantum device characterization tools, and measurement equipment that enable researchers and quantum technology companies to control and measure quantum devices with high precision, providing essential electronic infrastructure for quantum laboratories and quantum computing development worldwide.

Company Information

• Founded: 2016
• Country: Denmark
• Website: https://qdevil.com
• Categories: infrastructure

Key People

Unknown

Quantum Design

Quantum Design specializes in cryogenic measurement systems and ultra-low temperature equipment for quantum research and quantum device characterization, providing SQUID magnetometers, dilution refrigerators, and precision measurement instruments that enable scientists to study quantum phenomena and develop quantum technologies over four decades of innovation.

Company Information

• Founded: 1982
• Country: USA
• Website: https://qd-usa.com
• Categories: infrastructure

Key People

Unknown

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Quantum Industries

Quantum Industries is a US quantum technology company founded in 2021 that develops comprehensive quantum infrastructure solutions including specialized components, systems, and services essential for quantum computing operations, focusing on providing the supporting infrastructure and ecosystem needed for quantum technologies to operate effectively, serving quantum computing companies, research institutions, and enterprises with the foundational infrastructure required to build, deploy, and maintain quantum computing systems and applications.

Company Information

• Founded: 2021
• Country: USA
• Website: Not available
• Categories: infrastructure

Key People

Unknown

Rohde & Schwarz

Rohde & Schwarz develops quantum control electronics and test equipment for quantum computing applications, providing signal generators, vector network analyzers, and quantum measurement systems that enable precise control and characterization of quantum devices for research institutions and quantum technology companies.

Company Information

• Founded: 2020
• Country: Germany
• Website: https://rohde-schwarz.com
• Categories: infrastructure

Key People

Unknown

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SilQ Connect

SilQ Connect is a Quebec-based quantum technology startup that secured pre-seed funding to develop microwave-optical quantum interconnects, addressing key infrastructure challenges in quantum computing networks. The company specializes in developing quantum interconnect technologies that enable communication between quantum processors and quantum computing systems, focusing on microwave-optical conversion technologies essential for scaling quantum computing architectures. SilQ Connect works on quantum networking infrastructure, quantum communication protocols, and quantum system integration technologies that enable distributed quantum computing and quantum networking applications. The company contributes to Canada’s quantum technology ecosystem by advancing quantum interconnect technologies and quantum networking capabilities for next-generation quantum computing systems.

Taiwan Semiconductor Quantum

Taiwan Semiconductor Manufacturing Company (TSMC) is advancing quantum computing through specialized semiconductor manufacturing processes for quantum processors, quantum control electronics, and cryogenic systems. The company develops advanced fabrication techniques for superconducting qubits, silicon spin qubits, and quantum control chips, leveraging their leading-edge semiconductor manufacturing capabilities to produce quantum computing hardware for quantum technology companies worldwide. TSMC collaborates with quantum computing companies including IBM, Google, and other quantum hardware developers to optimize manufacturing processes for quantum devices, providing the semiconductor manufacturing infrastructure essential for scaling quantum computing systems. The company’s quantum initiatives focus on developing quantum-specific fabrication processes, yield optimization for quantum devices, and advanced packaging solutions for quantum processors and control electronics.