German startup launches room-temperature quantum computers

German quantum computing startup SAXON Q has announced the commercial availability of its SXQ128 and SXQ512 systems — 128-qubit and 512-qubit diamond-based quantum computers that operate entirely at room temperature, marking a leap from the company's previous 10-qubit-class machines to processors exceeding 100 qubits for the first time using nitrogen-vacancy center technology.The Quantum Insider+1

Room Temperature, No Cryogenics Required

Unlike most quantum computers from competitors such as IBM International Business Machines Corporation ↗ 0.60% and Google Alphabet Inc. ↘ 3.58%, which require dilution refrigerators operating near absolute zero, SAXON Q's systems use synthetic diamond chips with engineered nitrogen-vacancy (NV) centers as their qubit platform. The units are designed to fit into standard server racks, draw power from conventional AC outlets, and deliver what the company claims is 6–10x better energy efficiency than GPU-based classical hardware clusters.Quantum Computing Report

The company, spun out of Leipzig University, demonstrated a dual-core 10-qubit system at Hannover Messe in April 2026 and previously deployed a 4-qubit mobile quantum computer at the Fraunhofer Institute for Machine Tools and Forming Technology in Dresden in June 2025. The German Aerospace Center (DLR) is also among current users of SAXON Q's earlier-generation systems.SAXON Q+3

Technical Claims and Availability

According to The Quantum Insider, the systems are compatible with Qiskit and OpenQASM and target applications in quantum convolutional neural networks, variational quantum algorithms, materials research, and quantum chemistry simulations. Laboratory tests have reportedly achieved gate fidelities up to 99.92 percent.Клуб DNS+1

The SXQ128 is available to order now, with deliveries expected within three months. The SXQ512 is available for advance purchase, with shipments beginning in Q2 2027.The Quantum Insider+1

Context and Caveats

The announcement represents a dramatic scaling claim — jumping from 10 qubits to 128 in a single commercial release. Room-temperature NV-center quantum computing has long been viewed as promising but limited by short coherence times and challenges in scaling multi-qubit entanglement. Independent benchmarking of the new systems has not yet been published, and the company has not disclosed error-corrected logical qubit counts or detailed coherence metrics beyond the stated gate fidelity figure.