Yahoo! News News Home - Yahoo! - Help

AP
Home  Top Stories  Business  Tech  Politics   World   Local  Entertainment  Sports  Op/Ed  Science  Health  Full Coverage 
World - AP Australia & Antarctica
   
Australia/Antarctica

Full Coverage
In-depth coverage about
High-Energy and Particle Physics
Related News Stories
· Scientists Report 'Teleported' Data - Associated Press (Jun 17, 2002)
· Australia makes teleporting reality - Reuters (Jun 17, 2002)
· Hunting the Doubly-Charmed Baryon - Wired News (Jun 10, 2002)
More...
Opinion & Editorials
· Steam me up, Scotty - The London Times (Jun 18, 2002)
· The Future of Science, and the Universe - New York Review of Books (Oct 31, 2001)
· Very strange but true - The Guardian (UK) (Jan 8, 2001)
More...
Feature Articles
· Professor George Rochester - The Independent (UK) (Mar 17, 2002)
· An element apparently discovered two years ago has just been “undiscovered” - The Economist (Aug 9, 2001)
Related Web Sites
· Fermi National Accelerator Laboratory - U.S. Department of Energy national laboratory for research exploring the fundamental nature of matter and energy.
· The Particle Adventure - interactive introduction to the theory of fundamental particles and forces. Includes a timeline of developments in physics.
· Neutrino History - explores neutrino history, sources, experiments, and more.
More...

Scientists Report 'Teleported' Data
Mon Jun 17, 4:33 PM ET

By PETER O'CONNOR, Associated Press Writer

CANBERRA, Australia (AP) - Australian scientists said Monday they had successfully "teleported" a laser beam encoded with data, breaking it up and reconstructing an exact replica a yard away.

Their work replicates an experiment at the California Institute of Technology in 1998, but the Australian team believes their technique is more reliable and consistent.

Although the research brings to mind the way "Star Trek" characters were beamed around on TV and in film, scientists at the Australian National University said their technique's main use will be as a way to encrypt information and for a new generation of super-fast computers.

At this stage, the process perfected by Australian physicist Ping Koy Lam and his 12-member team can only teleport light by destroying the light beam and creating an exact copy at the receiving end from light particles known as photons.

"We have taken a beam of laser light ... and completely destroyed it and then made measurements of the destroyed laser beam and then took the measured results to the other side of the lab and reconstructed an exact replica of what we have destroyed," said Lam.

Teleporting a laser beam involves destroying and replicating billions of photons.

Lam said he believes the process, called "quantum teleportation" and which takes a nanosecond — one billionth of one second — will soon be used for teleporting matter.

"My prediction is if we are not doing it, it will probably be done by someone in the next three to five years, that is the teleportation of a single atom or a small group of atoms," he said.

Teleporting a living person would likely be virtually impossible, scientists said.

"In theory, there is nothing stopping, us but the complexity of the problem is so huge no one is thinking seriously about it at the moment," Lam said.

Quantum teleportation makes use of a strange aspect of quantum physics called the Heisenberg Uncertainty Principle, which says it is impossible to measure both the speed and position of an object at the same time.

The researchers couldn't directly measure the key characteristics of the laser beam they wanted to replicate, so they turned to a process called entanglement. In entanglement, characteristics of tiny particles — like the photons that make up laser beams — can be mirrored in a second set of particles.

So researchers can make their measurements on a second laser beam that was entangled with the first. The measurements are then sent by radio waves to the receiving station, which exactly replicates the first beam that was destroyed in the process of entanglement.

Lam's team will be presenting the results to an international conference on quantum electronics in Moscow next week.

More from > World - AP Australia & Antarctica
Next Story: Newcombe: Better Deal for Refugees
Tue Jun 18, 1:00 AM ET - (AP)

Email this story - View most popular | Printer-friendly format

Archived Stories by Date:

News Resources
Message Boards: Post/Read Msgs (172 msg Jun 18, 2:32 AM ET)


ADVERTISEMENT
 Weekly Specials
· Rent DVDs Online. No Late Fees ever. FREE TRIAL!
· FREE Health Insurance Quotes-eHealthInsurance.com
· Quick, detailed Life Insurance quotes.
· Get The New York Times delivered right to your door
· FREE Auto Insurance Quotes from StateFarm.com®
· Access Your PC from Anywhere, $15/month- Try it FREE
· Free personalized horoscopes!
· FREE credit report & trial membership!


Who Is Deep Throat?

ADVERTISEMENT


News Search
Advanced
Search:  Stories   Photos   Audio/Video   Full Coverage

Copyright © 2002 The Associated Press. All rights reserved. The information contained in the AP News report may not be published, broadcast, rewritten or redistributed without the prior written authority of The Associated Press.
Copyright © 2002 Yahoo! Inc. All rights reserved.
Questions or Comments
Privacy Policy -Terms of Service