Quantum Computing Companies

QuantWare is a Delft, Netherlands-based quantum computing startup that provides superconducting quantum processors as off-the-shelf products. Founded in 2021 as a spin-out from TU Delft’s QuTech institute by Matt Rijlaarsdam and Alessandro Bruno, the company aims to be the “Intel of quantum computing” by supplying affordable, high-quality quantum QPU (quantum…

QuEra Computing is a Boston-based quantum computing company pioneering neutral-atom quantum processors. Built on research from Harvard and MIT, QuEra operates the world’s largest publicly accessible quantum computer (the 256-qubit Aquila system on Amazon Braket) and is aggressively pursuing fault-tolerant architectures. In early 2025 QuEra secured a major $230 million financing…

QuiX Quantum is a Dutch quantum technology company specializing in photonic quantum computing hardware. Founded in 2019 as a University of Twente spin-off, QuiX has quickly grown into a European leader in photonic quantum processors and systems. Unlike matter-based qubit platforms that use stationary quantum bits on a cryogenic chip,…

Rigetti Computing is a full-stack quantum hardware company specializing in superconducting qubit processors. Rigetti’s qubits are implemented as Josephson-junction-based circuits (transmons) operated at milli-Kelvin temperatures inside dilution refrigerators. This platform offers extremely fast gate speeds (on the order of tens of nanoseconds) and leverages mature semiconductor-fabrication techniques for scalability. Rigetti’s…

Silicon Quantum Computing (SQC) is an Australian quantum hardware company based in Sydney, founded in May 2017 as a UNSW Sydney spin-off by Prof. Michelle Simmons (2018 Australian of the Year). It was launched as Australia’s first quantum computing company with A$83 million in seed backing from the Australian government,…

Xanadu is a Toronto-based quantum computing company pioneering photonic (light-based) quantum processors. Founded in 2016 by CEO Christian Weedbrook, the venture has quickly become a leader in continuous-variable photonic quantum computing hardware and software. Xanadu’s approach leverages squeezed-light photons as qubits - allowing operations at room temperature and compatibility with…