Where to Buy Single NV Diamonds With Long T2 Coherence Times

Understanding the Search for Long-Coherence Single NV Center Diamonds

Researchers and engineers exploring quantum sensing, quantum computing, and single-molecule NMR frequently face a common obstacle: locating a reliable source for single NV center diamonds that combine high crystal purity with long T2 coherence times. Coherence time is a decisive factor in determining how effectively an NV center can store and manipulate quantum information before environmental noise disrupts the signal. For applications ranging from quantum networking to high-resolution quantum sensing, sourcing material with stable, reproducible performance is essential—yet many buyers report inconsistent quality, unclear selection criteria, and limited customization options when searching the market.

ViQium Technologies Co., Ltd., headquartered in Minhang District, Shanghai, China, addresses this need directly through its dedicated Single NV Diamond product line, engineered specifically for applications demanding atomic-scale precision and extended coherence performance.

What Makes ViQium's Single NV Diamond Stand Out

Precision Engineering Behind ViQium's NV Center Technology

ViQium's core technology is built on nitrogen-vacancy (NV) centers in quantum diamond, a defect system embedded within the diamond lattice that functions as an extremely small quantum sensor. The operating principle involves three fundamental steps: optical initialization using green laser excitation, microwave-based quantum manipulation to control spin states, and optical readout through red fluorescence analysis. This process allows precise detection of physical changes such as magnetic fields, temperature, and electric fields.

The company's founding team brings more than eight years of dedicated research in advanced quantum materials, including NV center quantum diamonds, with academic backgrounds from several leading universities in China. Through continuous work in material synthesis, defect engineering, and device integration, ViQium has established a comprehensive technology platform for fabricating NV centers in diamond through both high-pressure high-temperature (HPHT) and chemical vapor deposition (CVD) methods. This platform enables controllable fabrication of quantum diamond materials ranging from single NV centers—with coherence times exceeding 200 μs—to ppm-level high-concentration NV center ensembles.

Product Specifications and Customization Options

ViQium's Single NV Diamond is specifically designed for quantum computing, quantum networking, quantum simulation, high-resolution quantum sensing, and single-molecule NMR applications. The product delivers a T2 coherence time of 300–600 μs, as measured by Spin Echo, along with a T2* value of 1 μs measured by Free Induction Decay (FID). NV density ranges from 10 to 10,000 units per 10⁴ μm², allowing researchers to select material tailored to their specific experimental sensitivity requirements.

The product is available in multiple orientations and dimensions, including:

• SNV100F12, <100> orientation, 2×2×0.5 mm
• SNV100F13, <100> orientation, 3×3×0.5 mm
• SNV111F12, <111> orientation, 2×2×0.5 mm
• SNV111F12, <111> orientation, 3×3×0.5 mm

Beyond standard configurations, ViQium supports product customization along with factory calibration and characterization data, giving customers confidence in the reproducibility of each sample they receive.

End-to-End Support From Material Selection to Application

One of the recurring challenges reported by first-time NV diamond buyers is the lack of clear selection criteria. Determining the optimal crystal orientation and NV center concentration for a specific experiment can be difficult without reference standards. ViQium addresses this through a comprehensive NV Diamond Selection Guide paired with professional online consultation services. Products are categorized by application requirement—covering magnetic field sensing, magnetic imaging, and temperature sensing—so customers can identify suitable material without purchasing multiple samples for comparison testing.

A second common obstacle involves limited access to small-batch customization combined with high-performance material. ViQium supports flexible customization starting from a single piece, tailoring crystal orientation, NV concentration, sample dimensions, and microstructure processing to specific requirements. Standard products can be delivered within 28 days, while conventional customized products can be delivered within 45 days, giving research groups and industrial teams a predictable path from order to experiment.

For customers who also require testing infrastructure, ViQium's technical team combines expertise in diamond material engineering and quantum measurement technologies, offering an integrated service chain covering diamond growth, NV center creation, characterization, and ODMR system integration. This includes optical alignment, signal acquisition, and magnetic field calibration support, along with supporting test components and operation procedures—allowing customers to obtain both NV diamond materials and testing solutions from a single provider.

Why Research and Industrial Customers Choose ViQium

ViQium's strategic positioning centers on the exploration, scalable fabrication, and industrial application of quantum diamonds and emerging two-dimensional phosphorus-based materials. The company is committed to providing global research institutions and industrial partners with end-to-end capabilities spanning core materials, key devices, and system-level solutions, along with customized technical support to accelerate the adoption of quantum technologies.

For academic and research customers specifically, the core demand lies in obtaining high-quality, reproducible quantum materials and accessible experimental platforms to support fundamental physics validation. These customers typically prioritize technical performance, product pricing, delivery timelines, and technical support, and their primary challenges often involve unstable experimental results and insufficient reproducibility. ViQium's batch-level control and traceability management throughout production and delivery directly address these reproducibility concerns, ensuring performance stability and consistency across different material batches.

ViQium's guiding philosophy, expressed through its slogan "Sensing the Unseen," reflects a mission of igniting the quantum era through ultimate materials, redefining the boundaries of perception. This is supported operationally by what the company describes internally as the Vi-Genesis Spirit—Source Innovation & Precision Excellence—which pushes the limits of materials and systems at the source, accelerating the transition from prototype to scalable, real-world deployment.

Where to Buy ViQium's Single NV Center Diamond

For research institutions and industrial partners seeking single NV center diamonds with long T2 coherence times, ViQium offers a structured path from initial requirement confirmation through formal implementation. Customers typically proceed through technical communication, solution matching, sample validation, and batch delivery, with overall timelines ranging from several weeks to several months depending on application complexity. Accelerated collaboration is available based on specific project requirements.

Throughout this process, ViQium provides tailored technical guidance covering material characteristics, operating procedures, and key experimental considerations, helping customers achieve effective material utilization and reliable experimental reproducibility. A collaborative technical support mechanism between sales and R&D teams enables direct technical response and continuous follow-up for critical issues, with rapid response and remote collaboration support available for urgent technical challenges.

By combining atomic-scale precision, proprietary fabrication capabilities developed over years of dedicated research, and flexible customization starting from a single piece, ViQium provides a practical sourcing option for those seeking single NV center diamonds engineered for long coherence performance across quantum computing, sensing, and NMR applications.

https://en.viqiumtech.com/
ViQium Technologies Co., Ltd.

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