Brookhaven Lab and Stony Brook Demonstrate First US Free-Space Quantum Network Link Across 13 Miles - Quantum Computing Report

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Brookhaven Lab and Stony Brook Demonstrate First US Free-Space Quantum Network Link Across 13 Miles

A map shows Brookhaven National Laboratory, Stony Brook University, and Yale University — the three institutions hosting facilities that form a free-space optical (FSO) link.

Researchers at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory and Stony Brook University (SUNY) have demonstrated the first permanent free-space optical (FSO) quantum link in the United States. Operating between Stony Brook’s Quantum Watchtower and Brookhaven’s Quantum Lighthouse, the team transmitted single photons and entangled photon pairs through 13 miles (21 kilometers) of open atmosphere, adding a “wireless” leg to the nation’s longest metropolitan quantum network.