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Research & Technology News

Elementary quantum network realized
GARCHING, Germany – Two single-atom nodes have been used to send, receive and store quantum information using photons, a quantum information-sharing milestone. “We have realized the first prototype of a quantum network,” said Dr. Stephan Ritter of Max Planck Institute of Quantum Optics (MPQ). For a quantum network to be useful, the exchange of information must be reversible. This is difficult because quantum information is very fragile and cannot be cloned. A breakthrough in solving this problem...
Fraunhofer Opening Laser Research Center at Strathclyde
GLASGOW, Scotland, June 1, 2012 — The UK’s first Fraunhofer Center will be based at the University of Strathclyde, the university announced this week. The new Fraunhofer Centre for Applied Photonics will be a hub for industry-driven laser research and technology for health...
Laser built on a silicon chip
SINGAPORE – A laser with a novel micro-loop mirror design fabricated on a silicon chip uses III-V semiconductor materials – a step forward for high-speed optical communications and interconnects on electronic chips. Active optical fibers with silicon...
Laser mixing generates multifrequency light
SANTA BARBARA, Calif. – A groundbreaking laser mixing technique can manipulate electron-hole collisions to create many frequencies of light simultaneously. This mechanism for ultrafast light modulation has potential applications in high-speed optical communications. ...
Lasers find distant hidden explosives
VIENNA – A new method of Raman spectroscopy uses laser light to detect chemicals inside a container from a distance of more than 100 m. Laser light is scattered in a very specific way by various substances. This is the basis of Raman spectroscopy and can be...
Many-body system beats computer in simulating quantum dynamics
MUNICH – 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...
OCT Device Could KO Ear Infections
CHAMPAIGN, Ill., June 1, 2012 — A new optical coherence tomography (OCT) device that can see difficult-to-detect bacteria behind the eardrum could help clinicians to better diagnose and treat chronic ear infections.
Plasmonic material bridges photonics, electronics gap
WEST LAFAYETTE, Ind. – A thin film of titanium nitride was coaxed into transporting plasmons, becoming the first nonmetal to be added to the short list of surface-plasmon-supporting materials and bridging the gap between photonics and electronics. The nonmetal could pave...
Superradiant laser holds bright promise
BOULDER, Colo. – A new “superradiant” laser 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 the most advanced atomic clocks, communications and navigation...
Thermal cloak hides heat
PARIS – In a new approach to invisibility cloaking, French researchers propose isolating or cloaking objects from sources of heat – essentially “thermal cloaking.” The method, developed by Sebastien Guenneau and his colleagues at Centre...
UK’s Defunding of Hawaii Telescopes Decried
HARWELL OXFORD, England, June 1, 2012 — Thursday was "a sad day for British astronomy," according to the president of the Royal Astronomical Society. That was the day the UK’s Science and Technologies Facilities Council (STFC) announced it would close — or transfer to other...
Matter Waves Conjured in Schrödinger’s Hat
SEATTLE, May 31, 2012 — An amplifier devised to boost light, sound or other waves while hiding them inside an invisible container could lead to the construction of a quantum microscope that captures quantum waves and monitors electronic processes on computer chips.
Short Movies Stored in Atomic Vapor
COLLEGE PARK, Md., May 31, 2012 — Using lasers and a magnetic field, physicists stored and replayed two letters of the alphabet in a tiny cell of rubidium atoms, the first time two images have been reliably stored in a nonsolid medium.
Tabletop Laser Precisely Cuts Brain Tissue
BERLIN, May 30, 2012 — A new tabletop solid-state laser system that produces 6.45-µm pulses to precisely cut brain tissue was developed as part of an interdisciplinary European Union project involving partners from seven European countries.
GFPs Measure Intracellular Heat
BARCELONA, Spain, May 29, 2012 — A quicker, more precise method that measures internal cell temperatures noninvasively using green fluorescent proteins (GFPs) could help scientists to learn more about cellular processes and to distinguish healthy cells from cancerous ones.
Imaging System Produces 3-D Monument Models with UAVs
GRANADA, Spain, May 29, 2012 — A 3-D imaging system scans 3-D models of historical buildings using data obtained from an unmanned aerial vehicle.
Dopant Breaks Graphene Solar Efficiency Record
GAINESVILLE, Fla., May 25, 2012 — Chemically treated graphene has upped the material’s solar power conversion efficiency from 2.9 percent to a record-breaking 8.6 percent. Researchers at the University of Florida have taken graphene, a single-atom-thick lattice of carbon...
Efficient and Tunable Entanglement Method Developed
INNSBRUCK, Austria, May 25 — To construct a viable quantum network, individual computers will need a way to reliably transmit information to each other. This will require an understanding of how light and matter interact at a quantum level, an understanding that is now much...
Lidar Maps Faults Near Lake Tahoe
CARNELIAN BAY, Calif., May 25, 2012 — Faults west of Lake Tahoe, Calif., now pose a substantial increase in the seismic hazard assessment and potentially could generate earthquakes with magnitudes ranging from 6.3 to 6.9, according to a new US Geological Survey study.
Light Pollution Transforms Insect Communities
EXETER, England, May 25, 2012 — Streetlights have substantially transformed the ecology of ground-dwelling insects and other invertebrates, according to a new study out of the University of Exeter.
Carbon Nanotubes Create More Efficient IR Detector
BEIJING, May 24, 2012 — Carbon nanotubes seem to be useful for just about every conceivable application. Their newest purpose is to create highly sensitive uncooled photovoltaic infrared detectors that can be used for industrial, manufacturing, communications and military...
Microscope Uses Broadband Light to Track Cell Flow
HAIFA, Israel, May 24, 2012 — A novel optical instrument no bigger than a breadbox can take real-time images of blood coursing through our veins without harsh and short-lived fluorescent dyes.
Germ-Killing UV LEDs
RALEIGH, N.C., May 23, 2012 — A relatively simple and inexpensive solution to the problem of ultraviolet light-absorption in LED substrates will enable the development of LED devices that use UV light to kill pathogens such as bacteria and viruses. Researchers at North Carolina...
Plasmonics Creates Invisible Photodetector
STANFORD, Calif., May 23, 2012 — An invisible light-detecting device that can see without being seen was created using plasmonic cloaking and could lead to a new class of devices that controls the flow of light at the nanoscale to produce both optical and electronic functions.
Simple, Safe Optochemical Sensor Relies on Light
GIESSEN, Germany, May 23, 2012 — Using only the interaction between nanostructures and light, an optochemical sensor has been developed that is simpler, safer and more reliable than standard electrical sensors. Researchers working on the European Union-funded Dotsense project have...

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