Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Space Industry and Business News .




CHIP TECH
First noiseless single photon amplifier
by Staff Writers
Brisbane, Australia (SPX) Nov 14, 2012


File image.

Research physicists have demonstrated the first device capable of amplifying the information in a single particle of light without adding noise. The research collaboration, involving Griffith University, The University of Queensland and University of Science and Technology of China, was able to amplify the noisy quantum state of a single photon subjected to loss, without adding noise in the process; in fact, their amplification reduced the noise in the quantum state.

The results have been published in "Heralded noiseless amplification of a photon polarization qubit", on the Nature Physics website.

Team leader, Professor Geoff Pryde from Griffith University's Centre for Quantum Dynamics said the breakthrough would provide a new tool for all sorts of new quantum technologies.

"This is the first time the information stored in a single photon has been amplified," Professor Pryde said.

"The technique works by combining the noisy quantum state with a 'clean' single photon in the amplifier, and using quantum teleportation to transfer the information onto the new photon.

"The most obvious application for this work is in improved quantum cryptography; secret messaging which is guaranteed secure by the laws of physics."

It is expected the results will stimulate further interest in the fundamental laws that govern how well amplifiers can work and in developing uses of noiseless amplification techniques for other quantum information technology applications.

Research into such applications is being pursued in Australia's Centre of Excellence for Quantum Computation and Communication Technology, as well as around the world. ?

Fellow team member Professor Tim Ralph from the University of Queensland said this breakthrough was the culmination of years of research.

"We have been developing the ideas and experimental techniques that led to this breakthrough for the past 4 years," Professor Ralph said.

"Quantum information is useful but very fragile and normal amplification techniques destroy it.

"The key feature of our photon amplifier is that it preserves the quantum information and may help overcome the current distance limitations of quantum communication."

The next step for the research team will be to build additional quantum teleportation into the experiment, which will make the noiseless amplifier more directly useful for long-distance communication.

The Advance Online Publication (AOP) of 'Heralded noiseless amplification of a photon polarization qubit' can be found on Nature Physics's website.

Participating research organisations: Centre for Quantum Computation and Communication Technology (Australian Research Council), Centre for Quantum Dynamics, Griffith University (Brisbane), Key Laboratory of Quantum Information, University of Science and Technology of China, School of Mathematics and Physics, University of Queensland.

.


Related Links
Griffith University
Computer Chip Architecture, Technology and Manufacture
Nano Technology News From SpaceMart.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





CHIP TECH
New study reveals challenge facing designers of future computer chips
Montreal, Canada (SPX) Nov 13, 2012
To build the computer chips of the future, designers will need to understand how an electrical charge behaves when it is confined to metal wires only a few atom-widths in diameter. Now, a team of physicists at McGill University, in collaboration with researchers at General Motors R and D, have shown that electrical current may be drastically reduced when wires from two dissimilar metals meet. ... read more


CHIP TECH
Chinese LED firm plans record investment in Taiwan

US to station powerful radar, space telescope in Australia

Afghan women learn literacy through mobile phones

36 in one fell swoop as researchers observe impossible ionization

CHIP TECH
LynuxWorks LynxOS-SE Deployed by ITT Exelis in New Line of Software-Defined Radios

Digital Modular Radios For New US Navy Ships and Submarines

Raytheon BBN Technologies' WNaN next generation network software selected for NIE 13.1 experiment

Raytheon announces Small Format Guard to secure data transfer for mobile and tactical forces

CHIP TECH
Arianespace's fourth Spaceport mission with Soyuz ready for fueling

Ariane 5's sixth launch of 2012

Ariane 5 is poised for Arianespace's launch with the EUTELSAT 21B and Star One C3 satellites

Ariane 5 orbits EUTELSAT 21B and Star One C3 satellites

CHIP TECH
Quattro Group Gains Visibility And Control With Ctrack

Saudi Arabia to Launch Two Satellites

Nokia buys 3D mapping firm in location services push

Gazprom to Launch Two Satellites by Yearend

CHIP TECH
China needs 4,960 planes by 2031: state media

Airbus wins Chinese corporate jet order

China unveils attack helicopter at airshow: report

Lockheed Martin Continues To Deliver CBP P-3's Ahead Of Schedule

CHIP TECH
First noiseless single photon amplifier

New study reveals challenge facing designers of future computer chips

No Japan electronics bailout, minister hints

Quantum kisses change the color of nothing

CHIP TECH
Surveying Earth's interior with atomic clocks

Storms, Ozone, Vegetation and More: NASA-NOAA Suomi NPP Satellite Returns First Year of Data

NASA's SPoRT Team Tracks Hurricane Sandy

Sizing up biomass from space

CHIP TECH
Toxic nickel found near leaking Finnish mine: agency

More landmine victims in Myanmar despite curbs on use

China to test 'social risk' of major factories: official

Smog in Indian capital blamed on vehicle increase




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement