# QuantumDiamonds

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/quantumdiamonds

- Industry: Semiconductors
- Headquarters: Munich, Germany
- Website: www.qd-st.com
- Total disclosed funding: $21M
- Latest round: Series A (Aug 8, 2025)
- Investors on record: 10

## About

Based in Munich, Germany, and founded in 2022, QuantumDiamonds GmbH operates as a manufacturer of semiconductors that create atom-sized quantum sensors, allowing for harmless, nanoscale imaging of magnetic fields. In July 2026, QuantumDiamonds GmbH raised USD 86.9 million in venture debt funding from new investors Bundeswirtschaftsministerium and Energy and the Free State of Bavaria. The round was part of a larger USD 104 million equity and debt funding.

QuantumDiamonds GmbH offerings are NV-Diamonds, utilizing solid-state qubits known as nitrogen-vacancy (NV) centers. These sensors break spatial resolution and sensitivity barriers, surpassing classical sensors. Operating at room temperature, the diamonds boast electronic spins with extended coherence times. It enables ultra-precise measurements of magnetic fields and other physical properties, offering calibration-free, biocompatible solutions. QuantumDiamonds generates revenue by selling quantum sensing metrology systems, semiconductor inspection tools, testing services, and failure analysis solutions to manufacturers

The company will use the July 2026 funding to build a new semiconductor testing equipment production facility in Munich and support its international expansion and manufacturing scale-up efforts.

## Funding rounds

- Series A, Aug 8, 2025, $18M — Earlybird, IQ Capital, Bayern Kapital, Unternehmertum Venture Capital, First Momentum Ventures, Creator Fund, World Fund, Onsight Ventures, TECH-DILIGENCE GmbH
- Seed, Nov 9, 2023, $3.2M — Earlybird, IQ Capital, Unternehmertum Venture Capital, First Momentum Ventures, Onsight Ventures, JSM Hinderer, TECH-DILIGENCE GmbH

## Investors

- Earlybird (https://capitalatlas.ai/funds/earlybird) — Seed, Series A
- IQ Capital (https://capitalatlas.ai/funds/iq-capital) — Seed, Series A
- Unternehmertum Venture Capital (https://capitalatlas.ai/funds/unternehmertum-venture-capital) — Seed, Series A
- First Momentum Ventures (https://capitalatlas.ai/funds/first-momentum-ventures) — Seed, Series A
- Onsight Ventures (https://capitalatlas.ai/funds/onsight-ventures) — Seed, Series A
- JSM Hinderer — Seed
- TECH-DILIGENCE GmbH — Seed, Series A
- Bayern Kapital (https://capitalatlas.ai/funds/bayern-kapital) — Series A
- Creator Fund (https://capitalatlas.ai/funds/creator-fund) — Series A
- World Fund (https://capitalatlas.ai/funds/world-fund) — Series A