> ## Content Index
> Fetch the complete content index at: https://sovereigntymonitor.eu/llms.txt
> Use this file to discover other available public pages before exploring further.

# Swiss startup Rhonexum raises USD 1 million for cryogenic quantum chip electronics
- URL: https://sovereigntymonitor.eu/news/2026-03-18-rhonexum-cryogenic-electronics-funding/
- Published: 2026-03-18T12:00:00.000Z
- Updated: 2026-09-20T06:58:30.000Z
- Description: Lausanne based Rhonexum, an EPFL AQUA Lab spinout, raised USD 1 million in pre-seed funding led by Dutch fund QDNL Participations plus Venture Kick and Swiss grants, to build cryogenic electronics that sit inside quantum computers' cold chambers.
- Author: Reidar Balstad
- Tags: Compute and infrastructure, Industry, investment and R&D, #news, #verified, #editor-read

Verified Editor-read [Rhonexum company announcement, 18 March 2026](https://rhonexum.com/news?ref=sovereigntymonitor.eu)

**What it does not test.** It does not establish that the technology has been proven at industrial scale or adopted by a quantum computer maker.

**How this item counts.** Towards autonomy: it changes who made the parts. Binding 2 of 3 (agreed or funded), scale 1 of 3 (small), Verified counts in full: weight +2 of 36 possible. Swiss startup funded to build EU quantum-chip cryogenic parts; small, unproven at scale. [European Sovereignty Index](https://sovereigntymonitor.eu/sovereignty-index/)

**How this item was made.** Drafted by an AI system (Claude (Anthropic)) from the source cited above; read and approved by the editor on 2026-09-20\. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)