Quantum Optics Jena
Jena-based spin-off of Fraunhofer IOF, founded in 2020 by Kevin Füchsel and Oliver de Vries to commercialise entangled-photon-pair sources and entanglement-based QKD systems for fibre networks, critical infrastructure, and future satellite payloads. The product line covers the full chain: EPS 1550 photon-pair source, polarisation-analysis modules, and the ELVIS multi-user QKD system. ELVIS distributes keys to three or more parties simultaneously from a single entangled source, removing the trusted-node requirement within the covered network segment. The company participates in EuroQCI and the Horizon Europe Qu-Test certification programme.
Timeline
Current flagship
ELVIS — entanglement-based multi-party QKD system (fibre; 60 km field-trialled)
Milestones
- 2025-09-25Entangled-photon-pair source independently certified by Italy's INRIM under the Horizon Europe Qu-Test project; evaluation confirmed source meets network-integration requirements for QKD
- 2025-05-22DPG Technology Transfer Prize awarded jointly to Fraunhofer IOF, Digital Innovation Hub Photonics, and Quantum Optics Jena for transfer of quantum-optics research into high-security commercial applications
- 2024-09-11Series A: €8.5 million raised, led by Join Capital with ELAS Technologies, Fraunhofer Technologie-Transfer Fonds, bm|t, and angel Malte Pollmann
- 2024-05-14ELVIS integrated into IDQ Clarion KX quantum-safe ecosystem alongside LuxQuanta, HEQA Security, and ThinkQuantum, enabling hybrid CV/DV/entanglement-based multi-vendor interoperability
- 2023-06-05Field trial with ADVA Network Security — ELVIS + ConnectGuard Layer 1 encryption over 60 km Thuringian state-network fibre; >20 billion entangled photons/day, 11.84 Mbit secure key, 46,000+ 256-bit keys/day
- 2021-02Seed funding completed: seven-figure euro investment from ELAS Technologies, Fraunhofer Technologie-Transfer Fonds, and bm|t
- 2020Company founded as Fraunhofer IOF spin-off by Kevin Füchsel and Oliver de Vries to commercialise entangled-photon-source and QKD technology developed at the institute
Roadmap
Capability details
QKD
- Protocols
- entanglement-based, BBM92
- Rate vs distance
- 11.84 Mbit secure key / day over 60 km SMF (June 2023 field trial with ADVA)
7 unverified fields
-
modalities.source-detect.detection_efficiency -
modalities.source-detect.dark_count_hz -
modalities.source-detect.jitter_ps -
modalities.qkd.rate_distance— 60 km field-trial metrics sourced from ADVA/QOJ joint press release (Jun 2023); peer-reviewed citation pending -
modalities.qkd.protocol— Protocol described as entanglement-based in vendor and press materials; BBM92 inferred from architecture but not explicitly named in available public sources -
shareholders— Private company; no cap table disclosed; stake percentages not published for any round -
roadmap.1.target— Satellite payload timeline not publicly disclosed; described as forward roadmap item on vendor exhibitor profile
People
References
- preprint https://arxiv.org/abs/2512.11630 Dosan et al. (2025) — "Highly Nondegenerate Entangled Photon Source for Fiber-Based Quantum Key Distribution"; type-0 SPDC at 680/1550 nm; Bell-state fidelity ≥96.1±1.3%; co-authored by Oliver de Vries (CTO)
- press https://www.iof.fraunhofer.de/en/pressrelease/2021/quantum-optics-jena.html Fraunhofer IOF spin-off announcement (Feb 2021) — founders, seed investors, product focus
- press https://www.adtran.com/en/newsroom/press-releases/20230605-adva-network-security-and-quantum-optics-jena-showcase-german-made-qkd-solution ADVA/QOJ joint press release (Jun 2023) — ELVIS 60 km field trial metrics
- press https://www.bm-t.de/en/2024-en/quantum-optics-jena-secures-e8-5-million-in-series-a-funding-to-revolutionize-secure-communications/ bm|t Series A announcement (Sep 2024) — €8.5 M, investors, EuroQCI roadmap
- press https://thequantuminsider.com/2025/09/25/quantum-optics-jena-secures-independent-certification-milestone-for-quantum-communications/ TQI (Sep 2025) — INRIM certification under Horizon Europe Qu-Test
- press https://www.iof.fraunhofer.de/en/pressrelease/2025/Award-winning-technology-transfer-from-Jena.html Fraunhofer IOF (May 2025) — DPG Technology Transfer Prize
- press https://www.idquantique.com/idq-launches-quantum-safe-communication-ecosystem/ IDQ (May 2024) — ELVIS in Clarion KX multi-vendor QKD ecosystem