Boeing Advances Its Space-Based Quantum Networking Project with Successful Q4S Lab Tests - Quantum Computing Report

We had previously reported on a Boeing Q4S project to demonstrate entanglement swapping in space (see here and here). Now, Boeing has announced further progress with the completion of ground testing of the high-fidelity entanglement swapping in the compact, space-qualified Q4S payload. This milestone moves the company closer to realizing a space-based quantum network capable of linking quantum sensors and computers globally. The payload has previously passed environmental qualification and is now undergoing final spacecraft integration ahead of a planned 2027 launch. Q4S is a planned one-year, on-orbit demonstration mission designed to test quantum networking hardware in the harsh environment of [...]

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