quantum information

Physicists have taken a significant step toward creation of quantum networks by establishing a new record for the length of time that quantum information can be stored in and retrieved from an ensemble of very cold atoms.

Though the information remains usable for just milliseconds, even that short lifetime should be enough to allow transmission of data from one quantum repeater to another on an optical network.

(National Institute of Standards and Technology (NIST)) Researchers from NIST and the Joint Quantum Institute have reported a new way to fine-tune the light coming from quantum dots by manipulating them with pairs of lasers.

Their technique could significantly improve quantum dots as a source of pairs of entangled photons for applications in quantum information technologies.

Stanford researchers use individual molecules to build remarkably small drums in order answer an old math conundrum: "Can you hear the shape of a drum?" In the process, they find a new way to extract quantum information that is usually inaccessible.

Results published in the journal Science.