http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. To exploit the quantum world to the fullest, a key commodity is entanglement -the spooky, distance-defying link that can form between objects such as atoms even when they are completely shielded from one another. Now, physicists at the Joint Quantum Institute (JQI), a collaborative organization of the National Institute of Standards and Technology and the University of Maryland, have developed a promising new source of entangled photons using quantum dots tweaked with a laser. The JQI technique may someday enable more compact and convenient sources of entangled photon pairs than presently available for quantum information applications such as the distribution of "quantum keys" for encrypting sensitive messages. http://www.physorg.com/news177763808.html Physics Wed, 18 Nov 2009 10:50:39 EST news177763808 Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. Clouds of gas big enough to swallow planets break away and billow into space. It's a flamboyant display of stellar power. http://www.physorg.com/news172856353.html Space & Earth Tue, 22 Sep 2009 17:30:06 EST news172856353 New research by a team of University of Toronto scientists could lead to substantial advancements in the performance of a variety of electronic devices including digital cameras. http://www.physorg.com/news164553830.html Technology Thu, 18 Jun 2009 14:40:02 EST news164553830 Austrian physicists say a breakthrough in next-generation quantum cryptography could allow encrypted messages to be bounced off satellites, the British journal Nature reported Sunday. http://www.physorg.com/news160593524.html Physics Sun, 03 May 2009 18:19:09 EST news160593524 (PhysOrg.com) -- Scientists at the University of Illinois have successfully demonstrated a microwave signal mixer made from a tunnel-junction transistor laser. Development of the device brings researchers a big step closer to higher speed electronics and higher performance electrical and optical integrated circuits. http://www.physorg.com/news156712542.html Physics Thu, 19 Mar 2009 20:16:31 EST news156712542 (PhysOrg.com) -- A team of physicists and engineers has demonstrated an optical device that filters two particles of light (or photons) based on the correlations between their polarisation that are only allowed in the seemingly bizarre quantum world. This so called "entanglement filter" passes the pair of photons only if they inhabit the same quantum state, without the user (or anything else) ever knowing what that state is. http://www.physorg.com/news151857190.html Physics Thu, 22 Jan 2009 14:34:53 EST news151857190 (PhysOrg.com) -- A new approach to calibrating quantum mechanical measurement has been developed with particular applications in optics and super-secure quantum communication. http://www.physorg.com/news146150726.html Physics Mon, 17 Nov 2008 13:25:26 EST news146150726 (PhysOrg.com) -- Single photons have been studied for a long time, Steve Harris tells PhysOrg.com. `But this is the first time that their wavepackets have been modulated.` Just as electrons may be described as either particles or waves, photons may also be described as particles or waves, and `in a similar manner to classical pulses of light their wavepackets may be modulated to encode additional information.` Harris immediately notes that over the last several years that several groups of scientists have used other techniques to generate shaped photonic wavepackets. http://www.physorg.com/news140348666.html Physics Thu, 11 Sep 2008 10:44:26 EST news140348666 After performing multiple tests on two entangled photons, physicists have yet again found that the photons seem to be communicating faster than the speed of light - at least 100,000 times faster. The researchers hope that their results might encourage theorists to come up with new explanations for the strange quantum mechanical effect. http://www.physorg.com/news137937526.html Physics Thu, 14 Aug 2008 12:58:46 EST news137937526 (PhysOrg.com) -- Electronic communication is becoming more secure all over the world. Siemens IT Solutions and Services, Austrian Research Centers (ARC) and Graz University of Technology have joined forces to develop the first quantum cryptography chip for commercial use. The chip, which protects data by generating a completely random sequence of numbers from particles of light, replaces the currently used system of key distribution based on mathematical algorithms. http://www.physorg.com/news136819764.html Physics Fri, 01 Aug 2008 14:29:24 EST news136819764