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One Step Closer to a Quantum Internet
GARCHING, Germany, April 11, 2012 — Communications networks are vital for our day-to-day lives, and now the first prototype of a quantum one has been developed based on interfaces between single atoms and photons. For a quantum network to be useful, the exchange of quantum information must be reversible. This is difficult because quantum information is very fragile, and the no-cloning theorem prevents the copying of an arbitrary known quantum state. A breakthrough in solving this problem has been achieved by a group led by...
SERS Susses Out Salmonella
ATHENS, Ga., April 11, 2012 — In the future, even the smallest traces of salmonella and other foodborne pathogens may be easily detected using a technology known as surface-enhanced Raman scattering, or SERS.
A Faster, Cheaper Way to Cool Lasers
RALEIGH, N.C., April 10, 2012 — A “heat spreader” that cools electronics 25 percent faster than pure copper could end the hunt for a faster, cheaper way to cool computers and other electronic devices.
Nanoparticle-Laser Method Targets Chemo Drugs
HOUSTON, April 10, 2012 — A potential treatment method for drug-resistant cancer uses gold nanoparticles to convert laser energy into “plasmonic nanobubbles,” which allow chemotherapy drugs to enter single cells. Delivering chemotherapy with nanobubbles is 30 times more...
Laser Creates First EUV Attosecond Pulses
PARIS, April 9, 2012 — For the first time, incredibly fast laser pulses could make it possible to observe ultrarapid phenomena such as the motion of electrons in matter. Laboratoire d’Optique Appliquèe (LOA), Commissariat à l’énergie...
Navy Robocopters to Target Pirates
ARLINGTON, Va., April 9, 2012 — Navy unmanned aircraft will be able to distinguish small pirate boats in congested coastal waters when a US Office of Naval Research-funded sensor starts airborne tests this summer.
Controlling Quantum Tunneling with Light
CAMBRIDGE, England, April 6, 2012 — For the first time, light was used to demonstrate quantum tunneling, pushing electrons through a classically impenetrable barrier.
Ultrathin Solar Cells for Stretchable Applications
LINZ, Austria, April 6, 2012 — An ultrathin flexible organic solar cell less than 2 µm thick could have implications for the design of future flexible electronic devices.
Nearly Lightless Laser Has Bright Future
BOULDER, Colo., April 4, 2012 — A new “superradiant” laser design that traps 1 million rubidium atoms into a 2-cm space between two mirrors produces a deep-red laser beam that could boost the performance of most advanced atomic clocks, communications and navigation systems, and...
Laser Built on a Silicon Chip
SINGAPORE, April 2, 2012 — A laser with a novel mirror design was fabricated on a silicon chip using III-V semiconductor materials — a step toward forward for high-speed optical communications and interconnects on electronics chips.
Silicon Optical Diode for Quantum Information
COLLEGE PARK, Md., April 2, 2012 — Ring resonators can be used to develop micro-optical diodes to replace or be compatible with their electronic counterparts for quantum information.
Avalanche of emissions creates first atomic x-ray laser
LIVERMORE, Calif. – The shortest, purest x-ray laser pulses ever achieved fulfill a 45-year-old prediction and could open the door to new materials, medicines and devices. Physicists from Stanford Linear Accelerator Center (SLAC) created the pulses, which were...
ESA pursues 3-D imaging lidar
PARIS – The European Space Agency (ESA) is developing 3-D imaging light detection and ranging (lidar) as a navigation aid for deep-space exploration. Lidar operates in the same fashion as radar but with shorter wavelengths because it uses light rather...
Handheld rainbow could spawn multispectral tools
BUFFALO, N.Y. – A new kind of polymer that is cheap and easy to make and reflects many different wavelengths of light when viewed from a single perspective could form the basis of handheld multispectral imaging devices. “Such portable technology could...
Instrument to assess aurora’s Alfvén effect on GPS
POKER FLAT RESEARCH RANGE, Alaska – A small rocket recently was launched into the aurora borealis in an attempt to discover how the northern lights affect signals on global positioning system satellites and other spacecraft. The two-stage, 46-foot Terrier-Black Brant rocket...
Laser-induced heat can record information
YORK, UK – A revolutionary magnetic recording method that uses an ultrashort heat pulse to switch magnetic polarity enables information processing hundreds of times faster than current hard-drive technology. Previously, it was believed that magnetic...
Lasers probe planet formation
LIVERMORE, Calif. – Experiments using high-power lasers could help scientists understand how planets are formed. Phase changes in liquid magmas at pressures and temperatures that exist deep inside Earth-like planets could provide insight into the processes that govern...
Lidar uncovers hidden earthquake damage
MEXICALI, Mexico, and DAVIS, Calif. – A new tool reveals how earthquake faults behave and how, down to a few inches, earthquakes change the landscape. A team of geologists from the US, Mexico and China has reported the most comprehensive before-and-after picture yet taken of an...
Multiband Optical Filters Find Applications Outside Fluorescence
Apr 1, 2012 — Whether used for imaging cells or astronomical bodies, multiband filters can improve signal-to-noise ratio while reducing cost, size, and setup and data-acquisition times in optical systems and instruments. In the past, most optical filters had a...
Nanomaterial combinations enhance IR photodetection
TEMPE, Ariz. – Improved infrared photodetector technology that uses ultrathin layers of materials should have an impact on critical applications ranging from national defense to medical diagnostics. Arizona State University researchers have discovered how infrared...
New bandgap boundaries could boost electronics
OAK RIDGE, Tenn. – A new layer-by-layer growth technique that reduces the bandgap of complex metal oxides by 30 percent could improve the performance of solar cells, LEDs, displays and other electronic devices. For years, complex transition metal oxides have...
New resonator overcomes obstacle to ultimate nanolaser
SAN DIEGO – Two very low power lasers that produce the smallest continuous-wave, room-temperature telecommunications frequency demonstrated to date may be a step closer to creating virus-size nanolasers. The new instruments – a 1.5-µm laser and a...
Tunable optical filter uses nanoantennas
CAMBRIDGE, Mass. – A new tunable color filter based on optical nanoantennas can precisely control color output, enabling its use for display and bioimaging applications and for marking currency. By precisely controlling the shape of the nanoantennas, engineers at...
Diatom Biosensor Could Detect Chemicals in Water
SEQUIM, Wash., March 30, 2012 — A biosensor made of fluorescent proteins that are embedded in the shell of microscopic marine algae called diatoms could help detect chemicals in water samples. The device could help produce nanomaterials that can solve sensing, catalysis and...
Many-Body System Beats Computer in Simulating Quantum Dynamics
MUNICH, Germany, March 29, 2012 — A recent experiment has shown that a many-body system of ultracold atoms can be used as a quantum simulator for experiments where classical computers fail. This also allows physicists to have a better understanding of how particles tunnel, and it...

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