Leiden Cryogenics - Quantum Computing Company Profile | Quantum Navigator

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.

NanoQT - Quantum Computing Company Profile | Quantum Navigator

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.

Plessey Semiconductors - Quantum Computing Company Profile | Quantum Navigator

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.

SilQ Connect - Quantum Computing Company Profile | Quantum Navigator

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 - Quantum Computing Company Profile | Quantum Navigator

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.