ViQium Key Features and Innovations in Quantum Sensing

Introduction: ViQium’s Position in Quantum Diamond Technology

ViQium Technologies Co., Ltd., headquartered in Minhang District, Shanghai, China, focuses on the exploration, scalable fabrication, and industrial application of quantum diamonds and emerging two-dimensional phosphorus-based materials. Operating through a global service network that supports research and industrial customers worldwide, ViQium is built to address three persistent industry pain points: high barriers to quantum technology adoption due to limited scalable fabrication and end-to-end capabilities, performance limitations in conventional measurement approaches that require a shift toward high-sensitivity, non-invasive sensing, and research inefficiency caused by unstable experimental results and insufficient reproducibility in quantum materials. Understanding these challenges helps explain why ViQium’s key features and innovations are structured around materials, integration, and customization.

Technical Foundation: How NV Center Quantum Diamonds Work

At the core of ViQium’s innovation is the nitrogen-vacancy (NV) center, a quantum defect embedded within the diamond lattice that functions as an extremely small quantum sensor. The operating principle consists of three steps. First, optical initialization uses a green laser to excite the NV center and prepare its quantum state into a well-defined starting condition. Second, quantum manipulation applies a precisely tuned microwave field, adjusting frequency and duration to control the NV center’s spin states. Third, optical readout re-excites the NV center with laser light, producing red fluorescence whose intensity varies according to the final quantum state, allowing physical changes in the surrounding environment to be detected and measured.

The key advantages of NV centers are room-temperature operation and nanoscale sensing resolution, making them suitable for applications requiring flexible operating environments and high spatial resolution, including quantum sensing, biological imaging, and precision measurement. Compared with quantum sensing approaches that depend on cryogenic temperatures or complex vacuum systems, NV centers offer a more practical pathway toward compact and scalable quantum technologies. Their sensitivity to magnetic fields, temperature, and electric fields also positions NV centers as promising solid-state systems for quantum information processing, including quantum computing and quantum networking.

Core Innovations: Three Structural Advantages

ViQium’s competitive differentiation rests on three structural innovations built on this technical foundation.

The first is proprietary advanced color center engineering. ViQium has independently established a complete production process covering diamond crystal growth, ion irradiation, and high-temperature annealing. This enables production of medium- to high-density NV center diamond products (0.1–10 ppm) as well as ultra-high-density NV center diamond products (10–45 ppm), achieving high ODMR contrast performance with key parameters comparable to leading international suppliers’ product series. ViQium also supports flexible customization starting from a single piece, which addresses a common gap where high-performance, high-density products typically come with higher costs and limited flexibility for small-batch customization.

The second innovation is integrated end-to-end delivery capability, spanning diamond growth, NV center creation, characterization, and ODMR system integration. ViQium’s technical team combines expertise in both diamond material engineering and quantum measurement technologies, providing customized material selection, testing solutions, competitive benchmarking, and experimental optimization recommendations. This is particularly valuable for university research groups without prior NV center experimental experience, as well as companies developing NV-based quantum precision measurement technologies.

The third innovation is a flexible customization platform covering diverse specifications and crystal orientations. ViQium’s product portfolio includes (111)-oriented high-density and ultra-high-density NV diamonds, shallow NV diamonds, nanodiamond powders, C12-enriched diamond materials, and single NV center diamonds, with customizable dimensions and NV center concentration. Standard products can be delivered within 28 days, while conventional customized products can be delivered within 45 days.

Product and Service Matrix

ViQium’s Quantum Materials Series includes High Purity Diamond, Single NV Diamond, Ensemble NV Diamond, Ultra-High-Density NV Diamond, Shallow NV Diamond, Nano-NV Diamond, NV Diamond Anvil, SiV Diamond, and Black Phosphorus. Each product targets specific use cases: Single NV Diamond (T₂ of 300–600 μs, measured by Spin Echo) suits quantum computing, networking, simulation, and single-molecule NMR; Ensemble NV Diamond (NV density 0.1–10 ppm) suits current, magnetic field, and temperature sensing; and Ultra-High-Density NV Diamond (NV density 10–45 ppm) suits quantum memory and room-temperature solid-state masers. The NV Diamond Anvil, with anvil face options from 20 μm to 300 μm, serves extreme high-pressure magnetism studies and new-state-of-matter exploration.

Beyond materials, ViQium is developing Precision Instruments, including a Portable Magnetometer for high-sensitivity, room-temperature magnetic field measurement in a compact, low-power system, and an NV Quantum Spin Spectrometer, a nanoscale magnetic resonance platform powered by diamond NV center ODMR that enables spin detection, mapping, and coherence analysis down to single-spin sensitivity.

Addressing Real Customer Challenges

ViQium’s innovations are directly tied to documented customer challenges. For first-time users lacking clear selection criteria, ViQium provides a comprehensive NV Diamond Selection Guide and professional online consultation, categorizing products by application requirements such as magnetic field sensing, magnetic imaging, and temperature sensing. For customers requiring small-batch customization and high-performance materials—an area where significant gaps often remain in NV center concentration, uniformity, and coherence time—ViQium combines flexible small-batch customization with in-house fabrication, tailoring crystal orientation, NV concentration, sample dimensions, and microstructure processing. For customers needing integrated ODMR testing and experimental support, ViQium provides diamond samples, optical components, and system configuration support together, covering optical alignment, signal acquisition, and magnetic field calibration from a single provider.

Serving Diverse Industries

ViQium’s technology serves research institutes and universities seeking high-quality, reproducible materials; advanced industrial inspection and precision manufacturing companies in semiconductor inspection, power measurement, and geological exploration seeking high-sensitivity, non-invasive, real-time sensing; and aerospace and defense customers requiring stable sensing performance under wide temperature ranges and challenging electromagnetic environments.

Team Expertise and Intellectual Property

ViQium’s founding team draws on academic backgrounds from several leading universities in China, with more than eight years of dedicated research in advanced quantum materials, including NV center quantum diamonds and black phosphorus. This expertise spans quantum physics, materials science, and optical engineering. ViQium has also built a systematic patent strategy covering black phosphorus and emerging phosphorus-based materials, diamond quantum materials and devices, precision processing and functionalization of superhard materials, and large-scale phosphide single crystal growth and scalable fabrication—together forming a comprehensive intellectual property foundation that supports its product development.

Conclusion

ViQium’s key features and innovations reflect a deliberate strategy: proprietary color center engineering, integrated end-to-end delivery, and flexible customization, all grounded in rigorous NV center quantum diamond science. By combining material-level control with system-level integration and responsive technical support, ViQium addresses the practical obstacles that have historically slowed the adoption of quantum sensing technologies across research and industrial settings.

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ViQium Technologies Co., Ltd.