List of superconducting quantum computing companies

Rigetti Computing is a quantum computing company based in Berkeley, California.

Quantum Circuits Company is a company that is aiming to develop, manufacture, and sell the first practical and useful quantum computer using superconducting qubits. It is based in New Haven, Connecticut and founded in 2015 by Robert J. Schoelkopf, Michel Devoret, Luigi Frunzio and Brian W. Pusch.

IQM is a full-stack superconducting quantum computers manufacturer founded in 2018 by Jan Goetz, Juha Vartiainen, Kuan Yen Tan and Mikko Möttönen.

Company building "quantum accelerators” a type of computing system that work in conjunction with classical computers to solve problems that are impractical or impossible to solve on classical computer alone.

A company making quantum electronic design automation toolkits for designing and optimizing nano and quantum electronics.

Quantware provides superconducting quantum processing units (QPU) chips for customers who want to develop a quantum computer but desire some help with creation of the chip. Their first products include Soprano, a five qubit chip with single qubit gate fidelities of 99.9% and Cresendo, a traveling wave parametric amplifier (TWPA) that introduces the minimum amount of noise allowed by nature. The company is a spinout from QuTech is located in Delft, The Netherlands and was founded in late 2020.

Nord Quantique develops quantum processors based on a second-generation technology. They have developed a technology that aims to reduce, as much as possible, the number of physical qubits required to encode a single logical qubit. The company aims to address the current quantum processor's problems and to deploy the full potential of quantum computer applications. The company is located in Sherbrooke, Quebec, Canada and was founded in 2020.

SpinQ is committed to the industrialization of quantum computing, with the goal of developing practical quantum computers and providing a complete set of quantum computing solutions. At present, SpinQ has released the world's first desktop NMR quantum computer €œGemini€ and the quantum computing cloud platform €œTaurus€, which offers direct open physical underlying control access to real, physical quantum computers, providing users with a stable and easy-to-use quantum computing platform. SpinQ was founded in 2018 and is located in Shenzhen, China.

OpenSuperQPlus project is part of the European Quantum Technology Flagship.

Snowcap Compute is a Palo Alto–based startup developing superconducting chips for AI and HPC. Using cryogenic Josephson junctions at 4.5K, it aims to revolutionize compute efficiency. Backed by Playground Global, Cambium Capital, and Vsquared Ventures with $23M seed funding.