TechCrunch reports that Quantum Xchange made a deal with Zayo to use 800km of existing fiber optic cable for the U.S's first quantum network. The fiber stretches between Boston and Washington D.C, and will use quantum key distribution for secure end-to-end encryption. High profile investors seem to be the initial target market, but Quantum Xchange hopes to expand to other industries. Organizations with offices in Boston will be able to send secure communications to a partner in D.C., and eventually even further – as the goal is to keep buying up optical fiber that is already in the ground all over the country so that we can provide a secure quantum network that will serve the entire nation," he said. Prisco said it's "critical" to establish a quantum key distribution network as a defensive measure "before the unprecedented power of quantum computers become an offensive weapon."