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# Alice & Bob and ENS Lyon demonstrate DC biased cat qubit stabilisation
- URL: https://sovereigntymonitor.eu/news/2026-09-30-alice-bob-ens-lyon-dc-biased-cat-qubit/
- Published: 2026-09-30T12:00:00.000Z
- Updated: 2026-10-01T17:59:45.000Z
- Description: French quantum firm Alice & Bob and ENS Lyon demonstrated a DC voltage biased SQUID coupler stabilising cat qubits without microwave pumps, reaching a 3 MHz two photon exchange rate. The design could simplify wiring and cut heat load in future fault tolerant machines.
- Author: Reidar Balstad
- Tags: Compute and infrastructure, #news, #verified, #ai-drafted

Verified AI-drafted [Alice & Bob press release via EIN Presswire, 30 September 2026](https://www.einpresswire.com/article/946369481/alice-bob-demonstrates-new-approach-to-stabilising-cat-qubits-with-dc-voltage-bias?ref=sovereigntymonitor.eu)

**What it does not test.** It does not establish when the architecture reaches a commercial quantum processor or how it performs at larger scale.

**How this item counts.** No movement: no answer to who owns, who operates, whose law governs or who made the parts changes. Weight 0\. lab demo of coupler design, no production or scale-up committed yet. [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 and published under the editor’s responsibility without a person reading it first. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)