tedlistens shares a report from Fast Company: Two corners of Brooklyn's historic Navy Yard will be connected by a small test bed for quantum networking, a first step toward a future "quantum internet" that promises to transform computing and make communications untappable. The effort, by a startup company called Qunnect, will join dozens of experiments around the U.S., Europe, and China, but would be the first commercial quantum network in the country, and the first to use only small, room-temperature devices. Such tools could make it easier to link quantum computers across the planet, opening the door to more practical uses of the technology in research, defense, finance, and other yet-to-be-determined applications. "We can have these networks go all the way from here, coast to coast, and eventually global," says Dr. Noel Goddard, the CEO of Qunnect. In addition to testing a protocol for sharing quantum information across conventional fiber-optic lines, the 12-person startup will use the network to test a group of quantum networking hardware that can fit into the server racks of existing telecom buildings. Its flagship product, spun out of research at SUNY Stony Brook, is a type of device thought to be crucial to establishing the "magic" of quantum entanglement across a fiber line, called a quantum memory. The machines use rubidium vapor to briefly store photons' quantum information, with all of its weird uncertainty, so that the information can be repeated across a long-distance fiber network without disturbing it along the way. But unlike many quantum machines -- often sprawling tabletop contraptions that rely on cryogenic cooling, vacuums, and other delicate equipment -- Qunnect's memory machine operates at room temperature and fits inside a box the size of a large desk drawer. Qunnect's sold just three of its memory machines so far, to Brookhaven National Lab and Stony Brook University, at a reported price of around $100,000 apiece. But a number of government and defense labs, along with big telecom and tech companies, from Amazon to Verizon, are paying close attention. The device has already received millions in backing from the Department of Energy and other federal and state agencies. And last week, Qunnect announced its largest endorsement yet: $8 million in funding, in a series A round led by Airbus Ventures and including The New York Ventures Fund, Impact Science Ventures, Motus Ventures, and SandboxAQ, a post-quantum security company Google spun off earlier this year. The new money will help build the test bed, which Qunnect plans to start operating by the middle of next year, when it will open it up to researchers and customers in government, finance, and telecom. These experiments will help the company learn more about a variety of proposals for building quantum networks, and, it hopes, position it as a device supplier for the whole quantum internet.

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