Arqit Proves Quantum-Safe Encryption Works on a Live Satellite, Not Just in a Lab

Arqit Quantum demonstrated that its quantum-safe encryption software works on a real, operational satellite link, without replacing any hardware or interrupting live service.

This proves Arqit's core business pitch on a real satellite carrying real traffic, not in a lab setting.

This is a genuine proof point, but it remains a demonstration rather than a signed commercial contract. It is worth watching whether this leads to an actual paid deployment.

Arqit Quantum Inc. (2026, September 1). Arqit, Es’hailSat and AIEE Demonstrate Quantum-Safe Satellite Security. Arqit Investor Relations. https://ir.arqit.uk/news-events/press-releases/detail/130/arqit-eshailsat-and-aiee-demonstrate-quantum-safe-satellite-security