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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
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
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
July 2, 2003
Tiny T splits light Researchers at the Swiss Federal Institute of Technology have designed a compact photonic crystal multiplexer that splits a lightwave into two slightly different colors. 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
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
Technology Research News
December 31, 2003
Colors expand neural net Researchers from the University of Tokyo have worked out a way to form an especially fast optical neural network by tapping the wave nature of lightwaves rather than just the amplitude, or strength of a signal. 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
November 17, 2004
Eric Smalley
Nanotubes Tune in Light Carbon nanotubes can act as antennas, but instead of transmitting and receiving radio waves, antennas of their size pick up the nanoscale wavelengths of visible light. 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
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
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
April 6, 2005
System Forms Light Necklace Researchers who are working with soliton clusters have come a step closer to all-optical computing. They have showed that it is possible to contain a lightwave as a soliton necklace -- a standing wave of light arranged as a ring of bright spots. 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
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
The Motley Fool
August 5, 2010
Eric Wesoff
Can a Disruptive PV Technology Topple First Solar? We list a few candidates for a "new black swan improbable pyro-nano-quantum-thingamajig technology" to displace thin-film PV. mark for My Articles similar articles
Technology Research News
August 27, 2003
Crystal shortens infrared waves Researchers from Sandia National Laboratories have found a way to make a tungsten photonic crystal emit 1.5 micron lightwaves, which are in the near-infrared, or heat range. This makes it useful for thermal photovoltaic devices, which turn heat into electricity. 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
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
October 8, 2003
Kimberly Patch
Crystal slows and speeds light Playing tricks with light -- speeding, slowing and storing it -- is becoming a popular pastime among physicists. The effects could eventually be used to improve communications and data storage and help bring about quantum computing and quantum communications. 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
Technology Research News
June 29, 2005
Crystal promises more light Spontaneous emission from chip-based devices like light-emitting diodes can lower efficiency and create noise. Researchers have created a device that can harness the energy from the emissions and put them towards positive ends. 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
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
Chemistry World
November 17, 2014
James Urquhart
Beetle behind breath test for bank notes Simply breathing on money could soon reveal if it's the real deal or counterfeit thanks to a beetle-inspired ink that reversibly changes color in response to humidity. 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
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
December 29, 2004
TRN's Top Picks: Technology Research Advances of 2004 Biotechnology... Communications... Computer chips... Computer interfaces... Engineering... etc. 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
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
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
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
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
March 23, 2005
Tiny crystals adjust laser colors It is possible to use a relatively inexpensive material to split and combine lightwaves to change the color of a light signal. mark for My Articles similar articles
IEEE Spectrum
May 2012
Alexander Hellemans
A New Twist on Radio Waves Using the angular momentum of light could make one radio channel into two, three, or more. But many wireless experts are skeptical mark for My Articles similar articles
Technology Research News
June 1, 2005
Lasers Built Into Fiber-Optics Researchers have crossed a gas-filled fiber optic laser with ordinary fiber optics to make a Raman laser and a frequency stabilizer -- devices that provide precise control of laser beams. mark for My Articles similar articles
National Defense
March 2012
Eric Beidel
Scientists Make Quantum Leap in Solar Power In its quest for alternative sources of power, the military has been turning to solar panels. The services have been trying them out on installations and on the backs of troops. mark for My Articles similar articles
Technology Research News
December 29, 2004
Solar Cell Teams Plastic and Carbon Researchers have fabricated an inexpensive, plastic-based solar cell that has the potential to be fairly efficient 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
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
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
IEEE Spectrum
February 2010
Edward H. Sargent
Infrared Optoelectronics You Can Apply With a Brush Infrared quantum dots will lead to cheaper photovoltaic cells. When the fabrication of optoelectronic devices becomes almost as easy as splashing paint on a canvas, our assumptions about the high cost of high-performance optoelectronic devices will be turned on its head. 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
Technology Research News
December 11, 2002
Kimberly Patch
Material soaks up the sun The semiconductor indium nitride got a raw deal a few decades back when it was misclassified as a mediocre photovoltaic. It turns out the stuff could be a champ at changing sunlight into electricity. If all goes according to plan, indium nitride will make for more efficient solar cells. 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
June 29, 2005
Eric Smalley
Nanowire networks route light Will computer chips using light rather than electricity offer increased computing speed? Research says probably. 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
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
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
The Motley Fool
May 26, 2006
Jack Uldrich
Harris & Harris Seeks Some Sun and Surf If you're looking for a little sun (in the form of solar power) and fun (in the form of quantum computing), you might want to consider an investment in Harris & Harris. mark for My Articles similar articles