How Physicists Beamed Entangled Light Through Open City Air Without Any Fiber Cables
On August 19, at 12:26 a.m. Eastern Time, an optical transceiver atop Stony Brook University’s Health Sciences Center fired an unguided, continuous stream of entangled photons across 21.0 kilometers (13.05 miles) of open atmosphere, striking a 0.6-meter telescope at Brookhaven National Laboratory’s ...