Quantum link connects light, ions | Science News



Support credible science journalism.

Subscribe to Science News today.


Quantum link connects light, ions

8:35pm, March 21, 2004

Instantly teleporting people and objects from one planet to another is a staple of science fiction. Now, physicists at the University of Michigan in Ann Arbor have taken a promising step toward teleporting at least some traits from atom to atom.

The new technique relies on a well-known but still mysterious phenomenon called entanglement, in which specific quantum traits of elementary particles become correlated, even at vast distances (SN: 12/8/01, p. 364: Gadgets from the Quantum Spookhouse). In this experiment, the researchers used a laser pulse to induce a cadmium ion to emit a photon whose polarization was entangled with the ion's spin, a magnetic quantum property.

Polarization is the orientation of a photon's electromagnetic field, and an ion's spin is akin to a top's motion.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content