Quantum

FBH Offers Diamond Processing For Quantum Technologies

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 11/11/2026, 09:19:26 UTC.

Briefings

FBH Berlin offers a diamond processing platform for quantum technologies, enabling customers to commission surface preparation, ion implantation for color centers, and nanoscale pillar fabrication. The Joint Lab Diamond Nanophotonics combines semiconductor process technology with quantum optics expertise to create reproducible, scalable processes. A key achievement is the demonstration of nitrogen-vacancy centers in diamond nanopillars with narrow optical linewidths, including lifetime-limited linewidths measured on a one-second timescale.

Key points

• FBH offers three complementary processing steps: plasma etching to remove up to 20 nm of material with surface roughness around 0.5 nm rms, ion implantation to create color centers using elements like nitrogen, silicon, and germanium, and electron-beam lithography to fabricate nanoscale pillars tailored for specific applications.
• The platform aims to integrate diamond nanostructures with photonic circuits, providing a toolbox for developing bright quantum light sources and spin-photon interfaces for entanglement operations and diamond-based sensors.

Context

Diamond defects, known as color centers, can behave like individual atoms with discrete spin states suitable for quantum memories and light sources. Translating these properties into functional devices requires high-precision diamond processing, which remains relatively unexplored compared to established semiconductor technologies. FBH's Joint Lab Diamond Nanophotonics combines semiconductor process technology with quantum optics expertise to address this gap.

Limitations

Evidence is limited to a press release and a single published study in Physical Review X. The demonstration of nitrogen-vacancy centers in nanopillars was conducted with narrow optical linewidths measured on a one-second timescale, but the broader scope of the platform's capabilities and long-term scalability remain unverified.

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