Tunable photon-ion entanglement enables quantum networks Nature | Innsbruck In Nature 485 and concurrent KurzweilAI press coverage, Rainer BlattTracy Northup, and Andreas Stute have constructed an interface for quantum networks that is both efficient and freely tunable—the first interface between a single ion and a single photon. "Whenever we have to transfer quantum information from processing sites to communication channels, and vice versa, we’re going to need an interface between light and matter," explains Northup. "This technique has two significant advantages over previous approaches that have entangled atoms with light: the efficiency with which we produce entangled photons is quite high and in principle could be increased to over 99 percent. But above all, this setup allows us to generate any possible entangled state.”


Inaugural NASA Quantum Future Technologies Conference NASA Ames Research Center

NASA scientists joined the best quantum technology experts from academia, government and industry to identify new and exciting opportunities in space exploration, aeronautics, earth and space science where quantum technologies can have the greatest impact.

Conference topics included next-generation quantum experiments for measurements of time and distance, navigation, field sensing, and gravity wave detection; scalable quantum computing architectures and algorithms; quantum key distribution for practical secure transmission over long distances, including fiber channels, earth-satellite links, and space-based communications networks.

Collaborations forged from this conference led to our invited submission to NIAC, OCT and DARPA under QUINESS mandate to create the world's first global quantum teleportation network: Astronaut Development and Deployment of a Secure Space Communications Network, with colleagues Rupert Ursin, Colin Williams, Paolo Villoresi, and Vikram Sharma.

See also: World’s-first demonstration of Earth-to-space quantum teleportation

Conference Website
Live Videoconference Stream

February 3, 2012 | Videos and presentations are now online at the conference website.

With special thanks to Pete Worden and Gabe Durkin.