quantum Internet tagged posts

This is an illustration of a photon gun. A quantum dot (the yellow symbol) emits one photon (red wave packet) at a time. The quantum dot is embedded in a photonic crystal structure, which is obtained by etching holes (black circles) in a semiconductor material. Due to the holes, the photons cannot be emitted in all directions, but only along the waveguide, which is formed by omitting a number of holes. Credit: Illustration: Søren Stobbe, NBI

Advanced photonic nanostructures are well on their way to revolutionising quantum technology for quantum networks based on light. Researchers from the Niels Bohr Institute have now developed the first building blocks needed to construct complex quantum photonic circuits for quantum networks...

Some rare atoms can store quantum information, an important phenomenon for scientists in their ongoing quest for a quantum Internet. New research exploits a system that has the potential to transfer optical quantum information to locally stored solid-state quantum format, needed for quantum communication.

“Our research aims at creating a quantum analog of current fiber optic technology in which light is used to transfer classical information — bits with values zero or one — between computers,” said author Dirk Bouwmeester, a professor in UCSB’s Department of Physics. “The rare earth atoms we’re studying can store the superpositions of 0 and 1 used in quantum computation. In addition, the light by which we communicate with these atoms can also store quantum information.”

Rare earth element...