Boeing's Q4S payload demonstrates entanglement swapping in ground tests and passes space qualification; launch now 2027

Boeing/Q4S quantum networking satellite

Boeing said the compact flight payload for Q4S performed entanglement swapping during ground testing, then completed environmental qualification for launch and space conditions. The hardware has moved into final spacecraft integration for a 2027 launch and a one-year demonstration in orbit. Boeing plans to submit results for peer review and use them to shape follow-on systems.

• Swap shown on the actual flight payload, not a lab setup.
• Environmental qualification completed; payload in final integration.
• Launch planned for 2027, a year later than first announced.
• Boeing calls the swap high-fidelity but published no fidelity figures.