A Quantum Internet

Physics: Unite to Build a Quantum Internet

Advances in quantum communication will come from investment in hybrid technologies, explain Stefano Pirandola and Samuel L. Braunstein.

Stefano Pirandola and Samuel L. Braunstein | April 12, 2016

Almost 25 years ago, physicists discovered a way of 'teleporting' a quantum system from one place to another without moving it. There are physical limits to such teleportation: nothing can be transmitted faster than the speed of light; and Heisenberg's uncertainty principle restricts what we can know about the state of a quantum system at a given time. Nevertheless, the transported system is a replica that perfectly mimics the original, thanks to the weirdest feature of quantum mechanics — entanglement. Described by Albert Einstein as “spooky action at a distance”, this property enables distinct quantum systems to become intimately correlated so that an action performed on one has an effect on the other, even for systems that are too far apart to physically interact.

Quantum Internet: First Teleportation to a Solid-State Quantum Memory. A European team of physicists has demonstrated a device that can teleport quantum information to a solid-state quantum memory over telecom fiber, a crucial capability for any future quantum Internet. Source: http://tabletcertified.blogspot.com/2014/02/quantum-internet.html

<more at http://www.nature.com/news/physics-unite-to-build-a-quantum-internet-1.19716; related articles and links: http://tabletcertified.blogspot.com/2014/02/quantum-internet.html (Quantum Internet. February 11, 2014) and https://www.technologyreview.com/s/524186/quantum-internet-first-teleportation-to-a-solid-state-quantum-memory/ (Quantum Internet: First Teleportation to a Solid-State Quantum Memory. A European team of physicists has demonstrated a device that can teleport quantum information to a solid-state quantum memory over telecom fiber, a crucial capability for any future quantum Internet. February 3, 2014)>