German Startup Debuts Room-Temperature Quantum Computers
A German quantum computing startup has introduced the commercial versions of its SXQ128 and SXQ512 quantum computers, marking a major milestone for room-temperature quantum technology. The new systems feature 128-qubit and 512-qubit processors built on synthetic diamond chips using nitrogen-vacancy (NV) center technology. As a result, the company has moved beyond its earlier 10-qubit-class machines to processors exceeding 100 qubits.
Room-temperature design removes cryogenic cooling
Unlike many quantum computers that rely on ultra-cold dilution refrigerators, the new systems operate entirely at room temperature. Instead, they use synthetic diamond chips with engineered NV centers as the qubit platform. Moreover, the systems fit into standard server racks and run from conventional AC power outlets.
The company says the computers deliver 6–10 times better energy efficiency than GPU-based classical computing clusters. Earlier, it demonstrated a dual-core 10-qubit system at Hannover Messe in April 2026. It also deployed a 4-qubit mobile quantum computer at the Fraunhofer Institute for Machine Tools and Forming Technology in Dresden during June 2025. In addition, the German Aerospace Center (DLR) already uses the company’s earlier-generation quantum systems.
Technical capabilities and commercial rollout
The quantum computers support Qiskit and OpenQASM, making them compatible with widely used quantum software frameworks. Consequently, they target applications such as quantum convolutional neural networks, variational quantum algorithms, materials research, and quantum chemistry simulations.
Laboratory testing reportedly achieved gate fidelities of up to 99.92%. The SXQ128 is available to order immediately, with deliveries expected within three months. Meanwhile, customers can place advance orders for the SXQ512, with shipments scheduled to begin in the second quarter of 2027.
Scaling claims await independent validation
The announcement represents a significant leap from 10-qubit systems to a commercial 128-qubit platform. However, room-temperature NV-center quantum computing has historically faced challenges, including short coherence times and difficulties in scaling multi-qubit entanglement.
Furthermore, independent benchmarking of the new systems has not yet been published. The company also has not disclosed error-corrected logical qubit counts or detailed coherence metrics beyond the reported gate fidelity. Therefore, researchers and industry observers will likely look for third-party validation before fully assessing the performance of these new room-temperature quantum computers.
