Diamond Track Ventures

Quantum Products & Hardware

The Physical Layer of Quantum Computing

Detailed technical breakdowns of our diamond NV center processors, qubit control units, optical quantum interfaces, and custom manufacturing capabilities — built for research labs, national facilities, and quantum computing programs.

Polished synthetic diamond qubit module glowing with violet NV-center emission

Product Line 01

Diamond NV Qubit Modules

Spin-based qubits in isotopically purified diamond

Our flagship processor family embeds nitrogen-vacancy centers in CVD-grown, isotopically purified ¹²C diamond lattices. Each module delivers long-lived electron-spin qubits with optical initialization and readout, operating from room temperature down to sub-kelvin regimes.

Lattice Purity
99.99% ¹²C isotopic
T₂ Coherence
> 3 ms @ 77 K
Qubit Fidelity
99.9% single-gate
Operating Range
4 mK – 300 K
  • Deterministic NV implantation with < 20 nm placement accuracy
  • Integrated microwave antennae for single-qubit control
  • Confocal-ready optical readout windows with AR coating
  • Scalable tiling geometry for multi-module registers
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Cryogenic CMOS control module on a cryostat cold-finger with frost forming at edges

Product Line 02

Cryo-CMOS Controllers

Qubit control electronics that live at 4 K

Cryogenic control ASICs and modules that generate, route, and digitize qubit control signals directly inside the cryostat — collapsing the wiring bottleneck and enabling control of thousands of qubits without thermal load penalties.

Base Temperature
4 K qualified
Power per Channel
< 8 mW
Channels
Up to 256 per module
Phase Noise
−110 dBc/Hz @ 1 MHz
  • Cryo-qualified CMOS process with full characterization data
  • On-chip arbitrary waveform generation for gate pulses
  • Multiplexed readout with integrated low-noise amplification
  • Standard rack-to-cryostat fiber and coax interfaces
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Optical quantum switch splitting coherent laser light into refracted beams

Product Line 03

Optical Quantum Switches

Photonic routing for entanglement distribution

Low-loss optical switching fabrics and single-photon interfaces that route NV-center emission into photonic channels — the backbone for remote entanglement, quantum networking, and modular processor interconnects.

Insertion Loss
< 0.4 dB per port
Switching Time
< 10 ns
Wavelength
637 nm ZPL optimized
Port Count
1 × 8 configurable
  • Single-photon-safe switching with negligible crosstalk
  • Fiber-coupled and free-space module variants
  • Synchronization electronics for heralded entanglement
  • Cryo-compatible mounting for in-fridge photonics
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Superconducting interconnect cable harness descending into a dilution refrigerator

Product Line 04

Superconducting Interconnects

Millikelvin signal paths without the heat leak

Engineered coaxial and waveguide interconnects, attenuation chains, and filtering assemblies designed for dilution refrigerators — preserving signal integrity from the 300 K flange down to the mixing chamber while minimizing passive thermal loading.

Thermal Load
< 2 µW per line @ MC
Attenuation Chain
Up to 90 dB configurable
Frequency Range
DC – 40 GHz
VSWR
< 1.2 across band
  • Superconducting NbTi coax with stainless semi-rigid sections
  • Integrated Eccosorb and powder filtering stages
  • Custom harness length and connector configurations
  • Full S-parameter verification per assembly
Request Technical Specs
Quantum engineering laboratory with dilution refrigerator and cleanroom engineers

Made-to-Order

Custom Hardware Manufacturing

Beyond our catalog product lines, we operate a full deep-tech manufacturing pipeline for bespoke quantum hardware — from first-principles design and simulation through fabrication, cryogenic qualification, and delivery with complete test documentation.

Design & Simulation

Electromagnetic, thermal, and quantum-device modeling; DFM review; rapid iteration with your physics team.

Precision Fabrication

CVD diamond growth, ion implantation, cleanroom microfabrication, and cryo-grade mechanical assembly.

Cryogenic Qualification

Every assembly tested in-house at operating temperature with full S-parameter, noise, and coherence reports.

Program Support

NDA-protected engineering collaboration, integration support, and lifecycle spares for research programs.

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