Navigation Links
Long distance, top secret messages
Date:10/19/2010

WASHINGTON, Oct. 19 When the military needs to send the key to encrypted data across the world, it can't necessarily rely on today's communication lines, where the message could be covertly intercepted. But physicists at the Georgia Institute of Technology in Atlanta are developing a new, more secure way to send such information across far distances, using existing cables and the laws of quantum mechanics.

Alex Kuzmich and colleagues have built a critical component of a quantum repeater, a device that allows quantum communications -- such as the encryption keys used to encode data transmitted over traditional lines -- to be relayed over larger distances. They will describe this device at the Optical Society's (OSA) 94th annual meeting, Frontiers in Optics (FiO) 2010, at the Rochester Riverside Convention Center in Rochester, N.Y., from Oct. 24-28.

Quantum cryptography is an emerging technology currently used by both military and financial organizations to send information as entangled particles of light. In theory, anyone who tries to tap into this information changes it in a way that reveals their presence.

A quantum repeater is similar to a transformer on a traditional power line. Instead of converting electricity, it regenerates a communication signal to prevent it from degrading over distance. It contains two banks of memory, one to receive an entangled message and a second line to copy it.

Previously, the longest distance over which an encrypted key could be sent was approximately 100 kilometers. The new technology developed by the Georgia Tech team increases 30-fold the amount of time the memory can hold information, which means that series of these devices -- arrayed like Christmas lights on a string -- could reach distances in excess of 1,000 kilometers.

"This is another significant step toward improving quantum information systems based on neutral atoms. For quantum repeaters, most of the basic steps have
'/>"/>

Contact: Lyndsay Basista
lbasista@osa.org
202-416-1930
Optical Society of America
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Major disease-vector mosquito reveals the secrets of its immune system
2. Feast and famine: MRI reveals secrets of animal anatomy
3. Secrets of a chiral gold nanocluster unveiled
4. Chemical analyses uncover secrets of an ancient amphora
5. Biomoda Board of Directors Names New Corporate Secretary
6. Secrets of insect flight revealed
7. DNA2.0 Unlocks The Secrets Of Optimized Gene Design: Company Identifies Codon Choice Design Principles for Optimal Protein Expression
8. Charging ahead: University of Houston team revealing secrets of electricity-producing materials
9. EnVivo Pharmaceuticals Announces Reversal of Cognitive Deficits in Alzheimers Disease Transgenic Mouse Model With Gamma-Secretase Modulator
10. Former Secretary of Veterans Affairs James Peake to Join the Cellphire Board of Directors
11. AEterna Zentaris Acquires All Assets from Ardana for Growth Hormone Secretagogue Compound, AEZS-130
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... In 2013, Lawrence Livermore National ... Security LLC (LLNS), was awarded more than ... laser system for the European Union's Extreme Light ... the Czech Republic. , When commissioned to its ... " High repetition-rate Advanced Petawatt Laser System " ...
(Date:8/27/2014)... MSC , a healthcare performance improvement company advancing clinical ... Mary Beth Loesch to President and CEO. ... companies for rapid growth and market expansion, Loesch joined ... Development and Healthcare. In that role, she oversaw MSC,s ... corporate strategy and marketing. Previously, Loesch served as Senior ...
(Date:8/27/2014)... 2014 The Global and China Trifluoroacetic ... the current state of the Trifluoroacetic Acid industry in ... overview of the industry, including definitions, applications and industry ... analysis are provided with a focus on history, developments, ... between the international and Chinese situation is also offered. ...
(Date:8/27/2014)... -- Research and Markets  has announced the ... Polymer, Food & Beverage, Personal Care & Pharmaceutical) ... report to their offering. Lactic acid ... carbon atom. The main applications of lactic acid ... personal care product, and pharmaceutical industries. Lactic ...
Breaking Biology Technology:LLNL Synchs up with ELI Beamlines on Timing System 2LLNL Synchs up with ELI Beamlines on Timing System 3MSC names Mary Beth Loesch President and CEO 2Trifluoroacetic Acid Industry (Asia, Europe, North America, ROW) Analysis Report Now Available at ReportsnReports.com 2Global Lactic Acid (Biodegradable Polymer, Food & Beverage, Personal Care & Pharmaceutical) Market - Trends & Forecasts to 2019 2
... United States and Canada and Monetary Damages, ... a medical device company focused on the treatment ... patent infringement lawsuits,against CryoCath Technologies Inc., one in ... Delaware and one in Canada., The lawsuits ...
... Preparing for the NFL, Combine Use SURGEX(TM) as part of ... ... Clubs(TM), BASKING RIDGE, N.J., Jan. 15 ... MBTG), announced today that SURGEX(TM) is,currently being administered as part of ...
... Jan. 15 As drastic cutbacks at ... challenge,blockbuster drug teams. Social networks have entered ... expenditures are being scrutinized for,ROI. Product recalls ... and,responsibilities on drug marketers. Yet new marketing ...
Cached Biology Technology:CryoCor Files Patent Infringement Lawsuits Against CryoCath 2CryoCor Files Patent Infringement Lawsuits Against CryoCath 3Pro Football Prospects Training at TEST Sports Clubs(TM) Use SURGEX(TM) as Part of Their Pre-Combine Training Regime 2Pro Football Prospects Training at TEST Sports Clubs(TM) Use SURGEX(TM) as Part of Their Pre-Combine Training Regime 3Pro Football Prospects Training at TEST Sports Clubs(TM) Use SURGEX(TM) as Part of Their Pre-Combine Training Regime 4Beyond DTC: Pharma Industry Faces New Challenges, Competition, Strategies for Market Dominance 2
(Date:8/27/2014)... traps are lost or abandoned each year in U.S. ... which continue to catch fish, crabs, and other species ... habitat, fisheries, and the watermen who depend on the ... published NOAA study. , The report, published in the ... its kind to examine the derelict fish trap problem, ...
(Date:8/27/2014)... A growing number of studies have shown ... the pathogenesis of Parkinson,s disease. Previous studies ... Medical University in China have shown that ... injury, reduced divalent metal transporter 1 expression, ... substantia nigra of rotenone-induced Parkinson,s disease rats. ...
(Date:8/27/2014)... Adelaide research has shown that piglets can be weaned ... , The outcome of the study at the University,s ... Science , is an important finding for pig producers. ... loss of production. , "Sows don,t usually start their ... after their piglets have been weaned," says Ms Alice ...
Breaking Biology News(10 mins):NOAA's Marine Debris Program reports on the national issue of derelict fishing traps 2Piglet weaning age no bar to litter frequency 2
... & Children,s Hospital and the University of Adelaide, Australia, ... with high blood pressure during pregnancy and pre-term birth. ... of Obstetrics & Gynaecology, are a major step forward ... blood pressure in pregnancy. The research has been ...
... balance of nature looms prominently in the public mind these ... declining fish stocks are but a few of the issues ... is it? It depends on whom you ask, ... the School of Life Sciences specializing in biology and society. ...
... no group takes credit. The pressure on the U.S. ... the president orders an attack, but it turns out ... Things go downhill from there. , To avoid that ... with extensive nuclear expertise, headed by Stanford physicist Michael ...
Cached Biology News:Herpes virus link to complications in pregnancy 2Managing uncertainty important in ecological balance: ASU researcher 2Group led by Stanford physicist says there's an urgent need for nuclear detectives 2Group led by Stanford physicist says there's an urgent need for nuclear detectives 3