According to Phys.org, New York University, Qunnect and Cisco connected three nodes over deployed telecom fiber in New York using entanglement swapping. Two independent entangled-pair sources in Brooklyn were connected to a central node at 60 Hudson Street in Manhattan by 17.6 km of fiber.
The system achieved about 1.5 swapping events per second across the city, while local tests produced more than 1.7 million entangled pairs per hour. The experiment is an example of quantum networking moving from the lab to field infrastructure.
Source: Phys.org, 21.04.2026 — https://phys.org/news/2026-04-scientists-quantum-internet-york-city.html