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Xanadu develops photonic quantum computing hardware and the widely-used PennyLane open-source quantum machine learning framework. PennyLane has become one of the most popular quantum software libraries, with deep integration into NVIDIA's GPU ecosystem. Xanadu demonstrated photonic quantum advantage in a Nature paper and has partnered with BMW for production optimization and Rolls-Royce/Riverlane for jet engine modeling (Innovate UK grant). The company focuses on room-temperature photonic approaches using squeezed light states.

D-Wave is the pioneer and sole commercial provider of quantum annealing systems, with over 25 years of operation. Its Advantage system features 5,000+ qubits optimized for combinatorial optimization problems. D-Wave also offers the Leap cloud platform with hybrid classical-quantum solvers. The company is developing gate-based quantum computing alongside its annealing business and launched the Quantum LaunchPad program in 2025 to accelerate commercial deployment. D-Wave has customers across logistics, manufacturing, and financial services. In January 2026, D-Wave acquired Quantum Computing Inc. (QCi, NASDAQ: QUBT) for approximately $550 million, expanding its quantum optimization portfolio to include room-temperature photonic hardware.

Classiq has created a quantum software platform that automates the design of quantum circuits from high-level functional descriptions — analogous to what compilers did for classical computing. Instead of manually placing gates, developers describe what they want the algorithm to achieve, and Classiq's synthesis engine generates optimized circuits. The company raised $45M in Series B funding and has partnerships with IonQ, IBM, Microsoft, AWS, and NVIDIA. Backed by Samsung NEXT and In-Q-Tel (CIA's venture arm).

Riverlane is the global leader in quantum error correction technology, developing Deltaflow — a real-time QEC stack with proprietary chips, decoders, and compilers that works across all qubit modalities. Deltaflow 2 was installed at Oak Ridge National Lab in 2025, the first dedicated real-time QEC integration at a U.S. national lab. In 2026, Riverlane demonstrated 16.32µs QEC latency — a fourfold improvement over Google's Willow benchmark. The company partners with over 60% of the world's quantum computer companies.