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Technology Research News
February 11, 2004
Eric Smalley
Light-storing chip charted Storing light, even briefly, was considered impossible until recently. Since scientists have proved it could be done, they've been finding different ways of accomplishing the feat. A proposal for slowing and stopping light in photonic crystal promises to bring these experiments to the chip level. mark for My Articles similar articles
Technology Research News
October 22, 2003
Fiber handles powerful pulses Researchers from Cornell University and Corning, Inc. have shown that it's possible to preserve the shape, intensity and color of a very high-power light pulse as it travels through 200 meters of a fiber-optic cable. mark for My Articles similar articles
Technology Research News
December 31, 2003
Eric Smalley
Light frozen in place Researchers at Harvard University have trapped and held a light pulse still for a few hundredths of a millisecond. 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
March 24, 2004
Kimberly Patch
Pulse trap makes optical switch Scientists who work with light pulses so short that one trillion of them pass by in a second are laying the groundwork for higher bandwidth communications and blazingly-fast, all-optical computer chips. mark for My Articles similar articles
Technology Research News
February 11, 2004
Magnets tune photonic crystal Researchers from Fudan University in China have found that it is possible to use a magnetic field to quickly shift or block certain frequencies of electromagnetic signals passing through photonic crystals made from semiconductor material. mark for My Articles similar articles
Technology Research News
November 19, 2003
Eric Smalley
Switch promises optical chips Computers have historically been electronic rather than photonic because lightwaves, while great for sending signals over long distances, are controlled by equipment that has proven difficult to shrink to computer chip scale. The rise of photonic crystals promises to narrow the gap. mark for My Articles similar articles
Technology Research News
March 10, 2004
Eric Smalley
X-shape pulses hold together A team of researchers in Italy and Lithuanian has found that under certain conditions a pulse of light can form an X shape that does not spread out. mark for My Articles similar articles
Technology Research News
November 3, 2004
Photonic Crystal Lasers Juiced Researchers have made a photonic crystal laser that is driven by electric current. The device could eventually be used as a source of single photons for quantum cryptography and communications devices. mark for My Articles similar articles
Technology Research News
July 28, 2004
Eric Smalley
Photonic chips go 3D Computer chips made from photonic crystal promise better communications equipment and ultrafast, all-optical computers mark for My Articles similar articles
Technology Research News
June 4, 2003
Eric Smalley
Shock waves tune light Researchers from the Massachusetts Institute of Technology have used a computer simulation to show that sending shock waves through photonic crystals could lead to faster and cheaper telecommunications devices, more efficient solar cells, and advances in quantum computing. mark for My Articles similar articles
Technology Research News
June 1, 2005
Eric Smalley
Movie Captures Trapped Light Slow light, once better understood, could be used to improve devices like sensors and optical communications equipment. Researchers have moved the field forward with a way to directly observe the phenomenon. mark for My Articles similar articles
IEEE Spectrum
August 2006
Alexander Hellemans
Engineering Warms To Frozen Light Separate groups in the U.S. and Europe say that they have built and successfully tested more compact, rugged, and efficient means of delaying light pulses. Their work may clear the way for applications in optical switching and quantum communications. mark for My Articles similar articles
Technology Research News
September 8, 2004
Photonic Crystal Throttles Light Researchers have showed that the spacing of a photonic crystal can be used to control the timing of light emitted by a quantum dot. mark for My Articles similar articles
IEEE Spectrum
December 2007
Neil Savage
Slower Light for Faster Telecom Networks Promising research could yield better optical data storage. mark for My Articles similar articles
Technology Research News
February 9, 2005
Lens design promises tight spots A new photonic crystal lens can focus near-field light to a spot one-quarter of the light's wavelength. The device can be used to make smaller, faster computer chips and memory. It could also be used in super-resolution microscopes. mark for My Articles similar articles
Chemistry World
January 16, 2012
Kate McAlpine
Stripped down spectroscopy to probe single molecules Spectroscopy, a key method of identifying atoms and molecules with light, has been taken to its most fundamental level - a single photon absorbed by a single molecule. mark for My Articles similar articles
Chemistry World
August 23, 2006
Simon Hadlington
Laser Light Cast on Quantum Evolution Researchers have demonstrated for the first time why a technique called coherent control is able to break molecular bonds selectively using finely-tuned pulses of laser light. mark for My Articles similar articles
IEEE Spectrum
September 2011
Wanke & Lee
Transceivers to Conquer the Terahertz Frontier New ICs harness the untamed terahertz band mark for My Articles similar articles
Technology Research News
March 24, 2004
Irregular layout sharpens light Aperiodic photonic crystal could improve devices that shape, detect and filter light, including communications devices like photodetectors, demultiplexers, which sort wavelengths of light, and channel drop filters, which filter out different wavelengths. mark for My Articles similar articles
IEEE Spectrum
February 2012
Neil Savage
Nanostructures Catch the Light Razor-thin solar cells could be cheap but need a little help holding light in mark for My Articles similar articles
IEEE Spectrum
July 2007
Federici et al.
T-Rays vs. Terrorists Terahertz radiation lets security screeners find bombs and weapons wherever they're hidden. mark for My Articles similar articles
IEEE Spectrum
November 2006
Monte Ross
The New Search for E.T. If extraterrestrials are trying to communicate with us, they're probably using lasers, not radio waves. mark for My Articles similar articles
PC Magazine
October 10, 2007
Anton Galang
Computing Sees the Light Imagine a CPU clocked at a few hundred terahertz. Physicists are close to making this happen. mark for My Articles similar articles
Technology Research News
July 27, 2005
Eric Smalley
Quantum crypto scheme doubly fast Researchers have found a way to double the speed of information transfer over quantum cryptography systems. 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
IEEE Spectrum
May 2010
Neil Savage
The Laser at 50 It's the golden anniversary of this fundamental technology mark for My Articles similar articles
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
Wired
September 2000
Charles Platt
Bright Switch A tiny crystal full of holes is about to smash the electronic speed limit, and in the coming photonics era, superfast optical networking is only the beginning. 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
Chemistry World
January 2, 2014
Ian Randall
Picosecond 'kettle' to probe chemical reactions A way to boil water in less than a trillionth of a second has been devised by researchers. The approach, which is still theoretical, uses a concentrated pulse of terahertz radiation to raise the temperature of a small sample of water by around 600 C. 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
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
Technology Research News
November 19, 2003
Liquid Crystal Tunes Fiber Researchers have combined photonic crystal and liquid crystal to make an optical fiber whose properties can change according to temperature. The combination allows the researchers to change the properties of the light inside the fiber. 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
April 6, 2005
Optics Demo Does Quantum Logic Researchers from the University of Science and Technology of China and the University of Heidelberg in Germany have demonstrated a method of using four photons to form a logic gate that can be used for quantum computing. 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
Industrial Physicist
Aug/Sep 2003
Eric R. Mueller
Terahertz radiation: applications and sources Today, with continuous-wave (CW) and pulsed sources readily available, investigators are pursuing potential terahertz-wavelength applications in many fields. mark for My Articles similar articles
IEEE Spectrum
November 2005
Willie D. Jones
No Place to Hide New through-the-wall radar devices that rely on ultrawideband, a fairly new technology known mainly as a promising high-speed, low-power radio communications transmission technique, are now available to municipalities and law enforcement agencies. 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
November 5, 2003
Eric Smalley
Crystal fiber goes distance Making fiber-optic lines that are hollow is one step toward more efficient telecommunications. Making lines that are full of holes goes further. Lots of regularly spaced holes bend light, which keeps it on the straight and narrow. mark for My Articles similar articles
Technology Research News
June 18, 2003
Eric Smalley
Chip sorts colors The simple concept of proportionality is the key to a significant advance in the emerging field of integrated optics -- chips that control light rather than electricity. 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
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
Chemistry World
December 10, 2007
Killugudi Jayaraman
Scientists Trap Light in Nano-Soup Physicists in India, have demonstrated how to trap and retrieve light using a soup of micro- and nano-sized magnetic spheres. 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
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
IEEE Spectrum
September 2012
Carter M. Armstrong
The Truth About Terahertz Anyone hoping to exploit this promising region of the electromagnetic spectrum must confront its very daunting physics 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
December 11, 2002
Kimberly Patch
Laser pulses could speed memory Researchers from the Research Institute for Materials in the Netherlands and Siemens AG in Germany have found a way to switch a magnetic bit more quickly. The potential payoff is faster computer memory. mark for My Articles similar articles