German Startup Saxon Q Unveils First Diamond-Based Quantum Computer Exceeding 10 Qubits at Room Temperature, Targets 512 Qubits Next Year

August 17, 2026

ENGtechnica Germany

Overview

German startup Saxon Q has unveiled the world’s first diamond-based quantum computer to exceed 10 qubits, operating efficiently at room temperature. Utilizing nitrogen-vacancy (NV) centers in synthetic diamonds, this system presents a promising alternative to cryogenic quantum computers. The company reports an impressive 99.98% fidelity for single-qubit operations in recent internal testing and plans to introduce 512-qubit systems next year, with an ambitious long-term goal of surpassing 10,000 qubits.

In Depth

Key Findings

German startup Saxon Q has announced a groundbreaking development in quantum computing: the world’s first diamond-based quantum computer operating stably at room temperature with over 10 qubits. This system differentiates itself from other quantum computers requiring cryogenic environments by utilizing nitrogen-vacancy (NV) centers in synthetic diamonds as its qubits. The company reports achieving an impressive 99.98% fidelity for single-qubit operations, opening new avenues for future quantum computer design.

Technical Details

Saxon Q’s diamond-based quantum computer leverages the quantum properties of NV centers. An NV center is a defect structure within the diamond crystal lattice where a carbon atom is replaced by a nitrogen atom, and an adjacent lattice site is vacant. The electron spin of this NV center forms stable quantum states that can be individually manipulated and read out using laser light and microwaves at room temperature. This characteristic eliminates the complex and costly requirement for cryogenic cooling systems, which are typical for superconducting and ion-trap qubits.

While the current system exceeds 10 qubits, Saxon Q has an ambitious roadmap to introduce a 512-qubit system next year and to build large-scale systems with over 10,000 qubits in the long term. The 99.98% fidelity for single-qubit operations is a critical requirement for achieving fault-tolerant quantum computing, which necessitates error correction, indicating the high promise of this technology.

Background and Industry Context

In the quantum computing field, multiple physical approaches are being developed in parallel, including superconducting, ion trap, and topological methods. Diamond NV centers have gained attention as an attractive alternative due to their potential for room-temperature operation, long coherence times, and ease of integration on solid-state platforms. Saxon Q’s achievement demonstrates concrete progress in this niche area, emphasizing the importance of diverse technological paths toward practical quantum computing. Room-temperature operation could significantly reduce the cost and complexity of deploying and operating quantum computers, enabling broader industrial access.

Strategic Significance and Outlook

Saxon Q’s diamond-based quantum computer offers a new perspective on the commercialization and practical application of quantum computing. Its room-temperature operation capability facilitates easier integration into data centers and industrial environments, potentially accelerating adoption in specific application domains. If the company’s roadmap for 512-qubit and over 10,000-qubit systems is realized, it could contribute to solving complex computational problems intractable for classical computers in fields such as chemical simulation, materials science, and financial optimization. This marks a crucial step in bringing quantum technology closer to solving real-world challenges.

Source: https://engtechnica.com/diamond-based-quantum-computer-reaches-a-new-milestone/

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