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Latest Coherence Stories

How Did Algae Evolve To Switch Quantum Coherence On And Off?
2014-06-17 03:02:59

University of New South Wales A UNSW-led team of researchers has discovered how algae that survive in very low levels of light are able to switch on and off a weird quantum phenomenon that occurs during photosynthesis. The function in the algae of this quantum effect, known as coherence, remains a mystery, but it is thought it could help them harvest energy from the sun much more efficiently. Working out its role in a living organism could lead to technological advances, such as...

2013-12-09 09:37:54

Ultrashort laser pulses reveal that 'coherence' plays a subtle role in energy transfers Sophisticated recent experiments with ultrashort laser pulses support the idea that intuition-defying quantum interactions between molecules help plants, algae, and some bacteria efficiently gather light to fuel their growth. But key details of nature's vital light-harvesting mechanisms remain obscure, and the exact role that quantum physics may play in understanding them is more subtle than was once...

Exploiting Flaws In Diamond Fragments Paves Way For Nanoscale MRI
2013-11-25 08:02:31

University of Cambridge By exploiting flaws in miniscule diamond fragments, researchers say they have achieved enough coherence of the magnetic moment inherent in these defects to harness their potential for precise quantum sensors in a material that is 'biocompatible'. Nanoscopic thermal and magnetic field detectors - which can be inserted into living cells - could enhance our understanding of everything from chemical reactions within single cells to signalling in neural networks and...

2013-04-22 09:57:07

University of Chicago researchers have created a synthetic compound that mimics the complex quantum dynamics observed in photosynthesis and may enable fundamentally new routes to creating solar-energy technologies. Engineering quantum effects into synthetic light-harvesting devices is not only possible, but also easier than anyone expected, the researchers report in the April 18 edition of Science Express. The researchers have engineered small molecules that support long-lived quantum...

2012-03-30 07:50:23

Physicists at the University of California, San Diego have discovered patterns which underlie the properties of a new state of matter. In a paper published in the March 29 issue of the journal Nature, the scientists describe the emergence of “spontaneous coherence,” “spin textures” and “phase singularities” when excitons–the bound pairs of electrons and holes that determine the optical properties of semiconductors and enable them to function as...

2010-09-15 07:07:00

TORONTO, Sept. 15 /PRNewswire/ -- According to Millennium Research Group (MRG), the optical coherence tomography market will grow at an annual rate of almost 60% through 2015, spurred by physician adoption of this new technology that was launched in the US in May 2010. Much like intravascular ultrasound, which is used to visualize the arterial lumen in order to assist physicians in the diagnosis and treatment of coronary artery disease, optical coherence tomography can be used for a...

2010-02-22 07:10:27

For nearly half a century, scientists have been trying to figure out how to build a cost-effective and reasonably sized X-ray laser that could, among other things, provide super high-resolution imaging. And for the past two decades, University of Colorado at Boulder physics professors Margaret Murnane and Henry Kapteyn have been inching closer to that goal. Recent breakthroughs by their team at JILA, a joint institute of CU-Boulder and the National Institute of Standards and Technology, have...

2010-02-05 07:00:00

SAN DIEGO, Feb. 5 /PRNewswire-FirstCall/ -- Volcano Corporation (Nasdaq: VOLC) today announced that the jury in the litigation filed by Lightlab Imaging, Inc. on January 7, 2009 in the Superior Court of Massachusetts, Suffolk County reached a verdict against Volcano and its wholly owned subsidiary, Axsun Technologies. In December 2008, Volcano acquired Axsun, which had an agreement to supply tunable lasers to Lightlab for use in Lightlab's OCT (Optical Coherence Technology) imaging...

2009-01-07 15:05:00

SAN DIEGO, Jan. 7 /PRNewswire-FirstCall/ -- Volcano Corporation (Nasdaq: VOLC), a leader in the development, manufacturing and sales of products for the diagnosis and treatment of coronary and peripheral artery disease, said today that it has closed its previously announced acquisition of Axsun Technologies, Inc. Axsun is a leading developer and manufacturer of lasers and optical engines used in medical Optical Coherence Tomography (OCT) imaging systems and advanced photonic...

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2008-08-04 10:49:35

The pinhole camera, a technique known since ancient times, has inspired a futuristic technology for lensless, three-dimensional imaging. Working at both the Advanced Light Source (ALS) at the U.S. Department of Energy's Lawrence Berkeley National Laboratory, and at FLASH, the free-electron laser in Hamburg, Germany, an international group of scientists has produced two of the brightest, sharpest x-ray holograms of microscopic objects ever made, thousands of times more efficiently than...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'