FBH Offers Diamond Processing For Quantum Technologies

FBH’s New Diamond‑Processing Platform for Quantum Tech

FBH announced a dedicated service platform that lets customers turn high‑purity diamond into nanoscale quantum components. The offering bundles three core steps—plasma surface preparation, ion implantation to create color‑center defects, and electron‑beam‑lithography of pillar structures—so researchers can obtain custom‑tailored diamond parts for quantum communication, sensing, and information processing.

Precise Surface Preparation

Mechanical polishing of diamond leaves strain and damage that degrade quantum performance. FBH’s oxygen‑ and chlorine‑based plasma etching can strip up to 20 µm of material while keeping surface roughness around 0.5 nm rms, delivering a low‑damage substrate ready for defect creation.

Controlled Color‑Center Creation

The platform can implant a range of ions (C, N, Si, Ge, Sn) to generate specific color centers. Implantation into ultra‑pure diamond yields low‑noise defects with long spin coherence, a prerequisite for high‑fidelity quantum memories and sensors.

Nanoscale Pillar Fabrication

Using electron‑beam lithography, FBH shapes diamond into pillars that host individual color centers. The geometry boosts photon‑collection efficiency, improving single‑photon source brightness and enabling spin‑photon interfaces for quantum networking.

Clients may select any combination of these steps, supply their own diamond substrates, or use FBH‑provided material. The goal is a reproducible, scalable workflow that can later be merged with photonic circuits for integrated quantum photonics.

Proven Capabilities

FBH’s expertise is backed by peer‑reviewed work. A study in Physical Review X demonstrated nitrogen‑vacancy centers in diamond nanopillars with lifetime‑limited optical linewidths and an inhomogeneous linewidth of 150 MHz, confirming the platform’s ability to produce high‑quality quantum emitters.

Outlook

By offering a turnkey processing pipeline, FBH aims to lower the barrier for labs and companies developing diamond‑based quantum devices. The service could accelerate progress toward practical quantum light sources, spin‑photon interfaces, and diamond‑based sensors, all of which rely on precise nanofabrication and defect engineering.

--- For more details, see FBH’s service page and the referenced Physical Review X article.