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photons News
Physicists Confirm Born’s Rule
INNSBRUCK, Austria & WATERLOO, Ontario, Canada, July 22, 2010 — Using a single-photon source, Austrian and Canadian quantum physicists said they ruled out the existence of higher-order interferences experimentally and confirmed an axiom in quantum physics: Born’s rule.
Optical Fiber Ion Trap Collects Light
GAITHERSBURG, Md., July 14, 2010 — Physicists at the National Institute of Standards and Technology (NIST) have demonstrated an ion trap with a built-in optical fiber that collects light emitted by single ions (electrically charged atoms), allowing quantum information stored in the...
Transformation Optics Makes a U-turn
BERKELEY, Calif., July 7, 2010 — In transformation optics, light waves can be controlled at all lengths of scale through the unique structuring of metamaterials, composites typically made from metals and dielectrics — insulators that become polarized in the presence of an...
Laser Strips, Hollows Out Atoms
MENLO PARK, Calif., June 30, 2010 — The world’s brightest x-ray source has been used to strip neon atoms of all their electrons, and also to create "hollow" atoms, which are devoid of only their innermost electrons. The first published scientific results from the hard x-ray...
Nature’s ’Light Switch’ Decoded
UPTON, N.Y., June 2, 2010 — Scientists at the US Department of Energy’s (DoE) Brookhaven National Laboratory and collaborators at the University of Wisconsin, Madison, have deciphered the structure of a molecular ‘switch’ much like the one plants use to sense...
Bending Light at will with Transformation Optics
May 10, 2010 — Invisibility cloaks get all the publicity, but they may just be the beginning if the promise of transformation optics can be realized. The discipline could lead to smaller photonic and electronic devices and more cost-competitive solar cells –...
A Step Towards Quantum Computing
CARDIFF, Wales, April 21, 2010 — Physicists have discovered properties of hybrid light-matter particles, existing in the solid state matrix, which could one day lead to faster and more efficient computers and telecommunications. A team from Cardiff University’s School of...
Laser Physics Turned ‘Upside Down’
DARMSTADT, Germany, April, 15, 2010 — Using quantum dot lasers, researchers at Technische Universität Darmstadt have found a new method for generating tunable wavelengths and for more easily switching back and forth between two wavelengths. Prospective application fields are...
Hitting the light switch for magnetic manipulation
WEST BENGAL, India – Reversing the magnetic properties of materials is the underlying reality behind computer hard drives, audiotape and other recording media. For these purposes, changing the magnetic state of macroscale particles suffices, but efforts are under way to...
Quantum Dots Are Finding Their Place in the World
Apr 12, 2010 — There has been a panoply of research into the next big thing in quantum dots – those semiconducting artificial atoms that are ubiquitous in fluorescence imaging, biological and chemical sensing, and display applications. Quantum dots of more...
Luminus Introduces its First UV PhlatLight LED
BILLERICA, Mass., April 5, 2010 — Big-chip PhlatLight LED developer Luminus Devices Inc., announced the UV CBT-120, its first big-chip ultraviolet LED built on PhlatLight technology. Suitable for UV applications that demand a high flux of UV photons, the solid-state lighting...
Single-Atom Laser Realized
INNSBRUCK, Austria, March 31, 2010 — Researchers in Austria have successfully realized a single-atom laser, an important step toward a fundamental understanding of laser operation in the few-atom limit, including syst...
Laser Security Halts Hackers
TEL AVIV, Israel, March 25, 2010 – Computer hackers are getting smarter, which not only puts our national security at risk, but also compromises our personal and financial information. Now, a new invention is promis...
Dark Matter Measures Age of Universe
DAVIS, Calif., March 23, 2010 — Astronomers from the United States and Europe have used a gravitational lens – a distant, light-bending clump of dark matter – to make a new estimate of the Hubble constant, which determines the size and age of the universe. The Hubble constant...
Ultrafast Laser Enables New Technologies
BOULDER, Colo., Feb. 25, 2010 – In what is being touted as a major breakthrough, University of Colorado at Boulder physics professors, Margaret Murnane and Henry Kapteyn have built a tabletop X-ray laser for supe...
Photons Led Astray
ERLANGEN, Germany, Feb. 17, 2010 – An international team, headed by researchers at the Max Planck Institute for the Science of Light, is using polarized light (light waves that oscillate in a particular plane) to de...
2010 Wolf Prize Winners Announced
JERUSALEM, Feb. 16, 2010 – Three scientists will share the 2010 Wolf Foundation Prize in Physics for their contributions to the foundation of quantum physics, specifically for an increasingly sophisticated series of tests of Bell’s inequalities or extensions there of using...
Toy Houses Built From Light
CALGARY, Alberta, Canada, Feb. 16, 2010 – A team of physicists from the University of Calgary has discovered how to use quantum entanglement to stack light particles. By manipulating the quantum entanglement, this team...
UV Pulses for Quantum Computing
MUNICH, Germany, Feb. 11, 2010 – Photons are promising candidates for investigating quantum systems. German researchers demonstrated a new method for generating intense, ultrashort light pulses in the ultraviolet...
Faster-Than-Light Photons
GAITHERSBURG, Md., Jan. 27, 2010 – By adding a single, strategically placed layer, a group of researchers sped up photons to seemingly faster-than-light speeds through a stack of materials. This experimental demonstration confirmed intriguing quantum-physics predictions that...
Filming photons using electrons
PASADENA, Calif. – A new technique that tracks and images nanoscale matter in real time also enables researchers to image electrical fields produced by the interaction of electrons and photons. The method, which uses four-dimensional microscopy, was developed by...
Letters to the Editor
Jan 4, 2010 — A question on energy I was pleased to see the GreenLight article “Making energy personal” (October, p. 35) on photocatalytic water conversion. In my opinion, this is the only lo...
A Few Photons Control Atom
GARCHING, Germany, Dec. 30, 2009 – The motion of a single atom in an optical trap has been controlled by the use of a fast feedback logic loop developed by scientists at the Max Planck Institute of Quantum Optics (MPQ), who also showed that the detection of just a few photons is all...
Quantum Entanglement
PASADENA, Calif., Dec. 23, 2009 – A new paradigm that should allow scientists to observe quantum behavior in small mechanical systems has been realized by researchers at California Institute of Technology (Caltech). Their ideas offer a new means of addressing one of the most...
4-D Microscopy Films Photons
PASADENA, Calif., Dec. 22, 2009 – A new 4-D microscopy technique was used to track and image nanoscale matter in real-time, allowing researchers at the California Institute of Technology (Caltech) to image electrical fields produced by the interaction of electrons and photons.
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