Quantum Grade Diamonds
Precision-Engineered Quantum Diamond Substrates: Atomic-Level Nitrogen Control for Breakthrough Science
Ultra-Pure, Layer-by-Layer Tuneable, and Patterned Diamond Solutions for Quantum Technologies
At the heart of quantum technology lies an extraordinary material—diamond, enhanced by engineered atomic defects. Nitrogen-vacancy (NV) centres in diamond serve as ultra-sensitive quantum sensors, enabling high-precision magnetometry, nanoscale imaging, and quantum communication. These unique properties position quantum diamonds at the forefront of quantum computing and sensing advancements.
Why Quantum Diamonds?
- Quantum computing – Harnessing spin properties for robust qubit performance.
- Biological sensing – Enabling nanoscale imaging for medical breakthroughs.
- Space and defence – Enhancing navigation with quantum-enhanced gyroscopes.
- Secure communications – Quantum cryptography powered by diamond spin states.
Leading Innovation in Quantum Technology
Core Capabilities
Unrivalled Material Purity
“Start with ultra-pure single-crystal diamond substrates featuring nitrogen concentrations as low as <5 ppb – ideal for extending spin coherence times in NV⁻ centres, quantum memories, and magnetometry. Our material eliminates parasitic noise at the atomic level.”
Precision Nitrogen Doping (1 ppb → 200 ppm)
“Demand-specific nitrogen integration across 9 orders of magnitude:
- Quantum Qubits: Optimize NV⁻ density with 1–100 ppb control
- Sensing Arrays: Scale to 100–200 ppm for high-density spin ensembles
- Buried Channels: Create subsurface layers with 10 nm depth resolution”
Advanced Structured Nitrogen Engineering
Buried Layers:
Subsurface NV⁻ networks shielded from surface noise (e.g., for waveguide-integrated sensors).
3D Gradient Stacks:
Multi-layer diamonds with discrete nitrogen concentrations in each stratum – design heterostructures for quantum photonics or fault-tolerant systems.
Technology Highlights
| Feature | Specification | Quantum Application Impact |
| Base Purity | <5 ppb N2 (measured by SIMS) | T₂ times >2 ms at room temperature |
| Doping Range | 1 ppb → 200 ppm (±5% tolerance) | Custom spin density for qubit/sensor scaling |
| Layering Depth | 10 nm – 100 μm resolution | Isolated sensing volumes, integrated photonics |
| Pattern Complexity | 500 nm feature size (masked layers) | On-chip quantum processors, grating couplers |
- Nitrogen Concentration < 5 ppb
- Surface roughness < 1 nm RA
- Top and Bottom Orientation: 100 / 111 / 110
- Sides Orientation: 110 / 100
- Customized N2 concentration inter-layers
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Why This Matters for Quantum Systems
“Nitrogen isn’t just an impurity – it’s a design parameter. We enable:
- Longer Coherence: 5 ppb substrates minimize magnetic noise
- Device Yield: Precisely positioned NVs reduce fabrication waste
- Architectural Freedom: Stack ppm-doped sensing layers atop ppb “quiet” zones”
Deploy Our Diamonds In
- Quantum Magnetometers: 200 ppm surface layers for high-sensitivity arrays
- Qubit Arrays: 1-10 ppb bulk with patterned NV⁻ registration marks
- Quantum Photonics: Buried waveguides (50–100 ppm N) in <5 ppb substrates
- Hybrid Quantum Systems: Multi-zone diamonds for MEMS-integrated sensors”
Technical Proof Statement
Every substrate ships with FTIR/ODMR validation reports, confirming:
- Absolute nitrogen concentration (ppb/ppm)
- Spatial distribution homogeneity (≤5% deviation)
- NV⁻ yield (>90% for doped regions)
Frequently Asked Questions (FAQs)
What makes quantum diamonds special?
Quantum diamonds have tiny defects called nitrogen-vacancy (NV) centers. These defects act as super-sensitive quantum sensors, making diamonds perfect for high-precision tasks like quantum computing, medical imaging, and secure communication.
Why is low nitrogen important in quantum diamonds?
Less nitrogen means fewer disturbances, allowing quantum states to last longer. Our diamonds have nitrogen levels as low as <5 parts per billion (ppb), which helps improve performance in quantum computers and sensors.
Can you control nitrogen levels in diamonds?
Yes! We can adjust nitrogen from 1 ppb up to 200 ppm with high precision. This lets us optimize diamonds for different uses, like qubits (low nitrogen) or sensors (higher nitrogen).
What are "buried layers" in quantum diamonds?
Buried layers are nitrogen-doped zones placed deep inside the diamond (as precise as 10 nm). This protects NV centers from surface noise, making them better for sensors and quantum devices.
How do I get a custom quantum diamond?
Tell us your needs—like thickness, nitrogen level, or pattern—and we’ll check if it’s possible. We provide small samples (10×10 mm) or large batches, all with test reports for quality.
