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Technology Research News
January 29, 2003
Eric Smalley
Faster quantum crypto demoed Working out how to use only standard telecommunications gear to transmit cryptographic keys could dramatically improve quantum cryptography's paltry performance. mark for My Articles similar articles
Technology Research News
November 14, 2005
Quantum cryptography Quantum cryptography, which taps properties of photons to represent information, can, in theory, provide perfectly secure communications. mark for My Articles similar articles
Technology Research News
September 19, 2005
Two Schools of Cryptography Hard numbers vs. uncertainty: Computationally secure methods use cryptographic keys that are answers to difficult-to-solve mathematical problems. Probabilistically secure methods use cryptographic keys chosen at random from a fast source of random signals. mark for My Articles similar articles
IEEE Spectrum
April 2008
Saswato R. Das
Quantum Cryptography Cracked? Swedes find vulnerability in supposedly secure quantum cryptography system. mark for My Articles similar articles
Technology Research News
February 25, 2004
Eric Smalley
Simple optics make quantum relay Quantum cryptography devices and networks, which transport photons whose properties can be used to represent the 1s and 0s of digital information, could also benefit from repeaters. mark for My Articles similar articles
Technology Research News
September 22, 2004
Eric Smalley
Bank Transfer Demos Quantum Crypto As quantum cryptography nears practical application, researchers are working on the next generation of the technology, which includes the weird quantum phenomenon of entanglement. mark for My Articles similar articles
IEEE Spectrum
October 2008
Saswato R. Das
"Mother of All Quantum Networks" Unveiled in Vienna EU-sponsored quantum-cryptography network unparalleled in size and complexity mark for My Articles similar articles
Technology Research News
July 14, 2004
Eric Smalley
Quantum crypto network debuts The network is the first step toward bringing the potentially perfect security of quantum cryptography to the Internet. mark for My Articles similar articles
Technology Research News
August 10, 2005
Eric Smalley
Pixels speed quantum crypto Crossing quantum physics with computer displays yields a new way of encoding information in photons. Using photons as pixels lets researchers encode more information per photon, promising higher data rates for quantum cryptography. mark for My Articles similar articles
Technology Research News
March 9, 2005
Quantum Crypto Scheme Goes One-Way Quantum cryptography researchers from Toshiba Research have demonstrated a one-way quantum key distribution system that automatically compensates for phase drift. mark for My Articles similar articles
Technology Research News
April 21, 2004
Sturdy Quantum Crypto Proposed Quantum cryptography systems promise potentially perfect security because it is impossible to eavesdrop on bits encoded in single photons without revealing the security breach. mark for My Articles similar articles
Industrial Physicist
Jennifer Ouellette
Quantum Key Distribution Several companies have focused on bringing one aspect of quantum communications to market, quantum key distribution, used to exchange secret keys that protect data during transmission. mark for My Articles similar articles
Technology Research News
April 6, 2005
Trapped Light Pulses Interact Researchers at Harvard University have showed that light pulses can be trapped and held in a rubidium vapor and made to interact with one another. The method could eventually be used in quantum cryptographic and quantum computing schemes. mark for My Articles similar articles
Technology Research News
June 15, 2005
Quantum Crypto Boosted to 2 GHz Researchers have upped the speed of their quantum key exchange system to 2 gigahertz over several kilometers of optical telecommunications fiber. mark for My Articles similar articles
Technology Research News
June 1, 2005
Eric Smalley
Speedy Photon Detector Debuts Researchers have devised a fast, efficient photon detector that senses individual photons. mark for My Articles similar articles
Technology Research News
April 21, 2004
Photons Teleported Six Kilometers Real-life teleportation will never come close to the teleportation of fiction, but instantly sending single quantum particles like photons from one place to another has been proved possible in laboratory experiments and promises to extend the reach of quantum cryptography, which offers potentially perfect security. mark for My Articles similar articles
Technology Research News
September 8, 2004
Eric Smalley
Polymer Serves up Single Photons Researchers have made a room-temperature, single-photon source using polymer molecules that could be used in quantum cryptography devices and eventually for quantum computing mark for My Articles similar articles
Technology Research News
June 2, 2004
Eric Smalley
Atom-Photon Link Demoed Getting atoms and photons to exchange information is crucial for many quantum computer designs. The first verified atom-photon entanglement shows that it's not so hard to do, as long as you can accept a low success rate. mark for My Articles similar articles
Technology Research News
April 9, 2003
Eric Smalley
Fiber loop makes quantum memory A relatively simple device that sends individual photons cycling through a fiber-optic loop could provide the memory needed to make ultra powerful computers that use the quantum states of light as bits. mark for My Articles similar articles
Popular Mechanics
August 26, 2008
Lasers Could Send World's Most Secure Messages Through Space Scientists at an Italian observatory this year succeeded in firing lasers at the mirror-covered Ajisai Japanese satellite, proving that a sequence of photons can travel great distances through space. mark for My Articles similar articles
IEEE Spectrum
June 2012
Michael Brooks
Quantum Cash and the End of Counterfeiting Physicists say they can make money that can't be copied -- at least in theory mark for My Articles similar articles
Technology Research News
July 28, 2004
Particle chains make quantum wires The method is a step toward building quantum computers, which have the potential to solve certain types of very large problems. mark for My Articles similar articles
Technology Research News
April 21, 2004
Eric Smalley
Optical Quantum Memory Designed Quantum computers that use photons rather than atoms or electrons are appealing because the equipment needed to handle them can be relatively simple. A scheme for trapping photons in fiber-optic loops and replacing the photons that the loops absorb could be the answer. mark for My Articles similar articles
Technology Research News
January 28, 2004
Technique detects quantum state Researchers from the University of Rome in Italy have pushed theorized "perfect" quantum cryptography schemes forward by demonstrating a method for detecting quantum entanglement among subatomic particles. mark for My Articles similar articles
CIO
April 1, 2002
John Edwards
Secure Light Streams New technology could eventually lead to the mainstream adoption of quantum cryptography, a secure form of optical communications that's virtually impervious to hacker attacks... mark for My Articles similar articles
Technology Research News
February 12, 2003
Eric Smalley
Teleportation goes the distance Teleportation makes it possible to transmit the quantum states, or structural information, of photons from one place to another. And making photons from one location materialize at another without traveling the distance between opens the way for sending messages long distances. mark for My Articles similar articles
Technology Research News
August 25, 2004
Eric Smalley
Five Photons Linked Researchers have entangled five photons - a key step in quantum computing which would make it possible to check computations for errors and teleport quantum information within and between computers. mark for My Articles similar articles
National Defense
March 2005
Joe Pappalardo
Researchers Cast Wary Eye On Atomic-Level Computing Experts point out that quantum computers could execute calculations several millions of times faster than conventional systems, but that the technology still is years away from becoming truly functional. mark for My Articles similar articles
Technology Research News
January 14, 2004
Eric Smalley
Quantum dice debut Researchers have overcome a major obstacle to generating random numbers on quantum computers by limiting the possibilities in the otherwise unlimited randomness of a set of quantum particles. mark for My Articles similar articles
Technology Research News
December 15, 2004
Light Writes Info Into Atoms Researchers have demonstrated that it is possible to transfer information encoded in the properties of photons to atoms. mark for My Articles similar articles
IEEE Spectrum
January 2009
Saswato Das
Ion Teleportation Scheme Could Scale Up Quantum Computers Scientists have teleported the quantum state of one trapped ion onto another a meter away mark for My Articles similar articles
Technology Research News
December 29, 2004
Atom Demo Fixes Quantum Errors Researchers have demonstrated a way to correct errors in qubits of beryllium ions held in an electromagnetic trap. mark for My Articles similar articles
Technology Research News
September 24, 2003
Eric Smalley
Laser made from single atom The simplest possible laser -- a single atom -- has been on the drawing board for decades. Researchers have finally achieved the extremely precise control needed to make a laser from just one atom. The first demonstration of a single-atom laser showed that it's a different animal -- it produces quantum light. mark for My Articles similar articles
IEEE Spectrum
March 2007
Samuel K. Moore
Commercializing Quantum Keys It's a strange business, turning the esoteric quantum properties of light into money. But there are a few brave companies that have been trying to do just that for the last five years, and they may have hit on the right way to do it. mark for My Articles similar articles
Technology Research News
March 10, 2004
Atom spouts photons on demand California Institute of Technology researchers have fashioned a single atom into a light source that generates single photons on demand. mark for My Articles similar articles
Technology Research News
January 29, 2003
Eric Smalley
Quantum computers go digital One of the challenges of building a quantum computer is reducing errors. Researchers from the University of Wisconsin at Madison have eased the problem with a method that reduces error rates by two orders of magnitude. mark for My Articles similar articles
Technology Research News
July 14, 2004
Eric Smalley
Teleport lifts quantum computing Researchers transported the states of charged atoms and showed that it is possible to do so on demand. The feat boosts the prospects for building quantum computers that employ trapped ions, quantum particles that live long enough to carry out multiple computations. mark for My Articles similar articles
Scientific American
January 2009
Charles Q. Choi
Quantum Entanglement Benefits Exist After Links Are Broken A way for quantum benefits to survive after entanglement ends mark for My Articles similar articles
IEEE Spectrum
January 2009
Monica Heger
Cryptographers Take On Quantum Computers Researchers prepare for the day when quantum computers can easily crack today's codes. mark for My Articles similar articles
Technology Research News
September 10, 2003
Quantum computing has limits Researchers from the University of Arkansas and Texas A&M University have shown that quantum computers, while theoretically useful for very large problems, are likely to always need very large amounts of power. mark for My Articles similar articles
IEEE Spectrum
December 2008
Saswato R. Das
Physicists Invent a Chip That Stores a Photon's Quantum State A step toward the "quantum repeaters" needed to make long-distance quantum-cryptography networks mark for My Articles similar articles
Technology Research News
April 7, 2004
Eric Smalley
Sturdy quantum computing demoed The atomic or subatomic components of prototype quantum computers usually have to be carefully sheltered from the environment, but a method that makes qubits immune to noise shows promise. mark for My Articles similar articles
Technology Research News
April 6, 2005
Eric Smalley
Scheme Reverses Light Pulses Researchers have developed a method for accurately time-reversing electromagnetic pulses, making it possible to receive a light pulse and return a replica of exactly the same size, shape and wavelength. mark for My Articles similar articles
IEEE Spectrum
August 2008
Mark Anderson
Quantum Weirdness: Two Times Zero Doesn't Always Equal Zero Researchers think they can extract quantum information from two noisy channels that are individually useless mark for My Articles similar articles
Technology Research News
December 1, 2004
Demo Advances Quantum Networking Researchers have transferred information stored in the properties of a cloud of rubidium atoms to the properties of a single photon. The ability to transfer information from atoms to photons is needed for quantum computers. mark for My Articles similar articles
Technology Research News
September 10, 2003
Eric Smalley
Electron teams make bigger qubits Making quantum computers from electronic chips rather than cumbersome laboratory equipment requires control over individual electrons. A scheme that has a string of electrons acting as one could ease the task by expanding the target to a whopping 250 millionths of a millimeter. mark for My Articles similar articles
Technology Research News
December 3, 2003
Eric Smalley
Chaotic lasers lock messages Researchers from Advanced Telecommunications Research Institute International in Japan have found a way for two people in different locations to work out a cryptographic key using the signal from the rapidly and randomly fluctuating light signal of a chaotic laser. mark for My Articles similar articles
National Defense
May 2012
Eric Beidel
Air Force Seeks Impossible-to-Intercept Communications The Air Force has enlisted a group of researchers to create quantum memories based on the interaction between light and matter that would result in a new form of encryption that some experts have called "perfect." mark for My Articles similar articles
Chemistry World
July 12, 2011
Kate McAlpine
Bit Part for Diethylfluoromalonate in Reaction Model A quantum simulation has successfully described the progression of a chemical reaction for the first time. mark for My Articles similar articles
Scientific American
August 2007
JR Minkel
The Gedanken Experimenter In putting teleportation, entanglement and other quantum oddities to the test, physicist Anton Zeilinger hopes to find out just how unreal quantum reality can get. mark for My Articles similar articles