Posts tagged social-sciences

Quantum Networks Advance with Entanglement of Photons

Aug 6th

Posted by scott fagan in News

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A team of Harvard physicists led by Mikhail D. Lukin has achieved the first-ever quantum entanglement of photons and solid-state materials.

…Quantum networking applications such as long-distance communication and distributed computing would require the nodes that process and store quantum data in qubits to be connected to one another by entanglement, a state where two different atoms become indelibly linked such that one inherits the properties of the other.
“In quantum computing and quantum communication, a big question has been whether or how it would be possible to actually connect qubits, separated by long distances, to one another,” says Lukin, professor of physics at Harvard and co-author of a paper describing the work in this week’s issue of the journal Nature. “Demonstration of quantum entanglement between a solid-state material and photons is an important advance toward linking qubits together into a quantum network.”
Quantum entanglement has previously been demonstrated only with photons and individual ions or atoms.
“Our work takes this one step further, showing how one can engineer and control the interaction between individual…

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Quantum Networks Advance with Entanglement of Photons

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Ultra-Strong Interaction Between Light and Matter Realized

Aug 1st

Posted by zanx in News

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Researchers around the world are working on the development of quantum computers that will be vastly superior to present-day computers. Here, the strong coupling of quantum bits with light quanta plays a pivotal role. Professor Rudolf Gross, a physicist at the Technische Universitaet Muenchen, Germany, …

…EnlargeThis is an electron microscopical picture of the superconducting circuit (red: Aluminum-Qubit, grey: Niob-Resonator, green: Silicon substrate). Credit: Thomasz Niemczyk, Technische Universitaet MuenchenTo facilitate the measurements, Professor Gross and his team captured the photon in a special box, a resonator. This consists of a superconducting niobium conducting path that is configured with strongly reflective “mirrors” for microwaves at both ends. In this resonator, the artificial atom made of an aluminum circuit is positioned so that it can optimally interact with the photon. The researchers achieved the ultrastrong interactions by adding another superconducting component into their circuit, a so-called Josephson junction.
The measured interaction strength was up to twelve percent of the resonator frequency. This makes it ten times stronger than the effects previously measureable in circuit QED systems and thousands of times stronger than in a true cavity resonator. However, along with their…

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Ultra-Strong Interaction Between Light and Matter Realized

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New gov’t rules allow unapproved iPhone apps & Jailbreaking.

Jul 26th

Posted by Jane in News

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Owners of the iPhone will be able to break electronic locks on their devices in order to download applications that have not been approved by Apple. The government is making that legal under new rules announced Monday.

…So the government is telling me I can do something I’m already doing. Just wish they would get around to marijuana. Just move to beautiful Colorado, like I did. :)Here are some other things they will allow (lol finally getting around to DVDs):…

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New gov’t rules allow unapproved iPhone apps & Jailbreaking.

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Guy Kawasaki: Steve Jobs is a ‘Hustler’

Jul 21st

Posted by hellokitty in News

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For nearly 30 years, Kawasaki has earned a notable reputation as a venture capitalist, entrepreneur and popular blogger.The former Apple evangelist will share his provocative insights and commonsense practices for succeeding in today’s business world while ripping on Steve Jobs at the same time.

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Guy Kawasaki: Steve Jobs is a ‘Hustler’

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Zappos CEO: How Weird are You?

Jul 19th

Posted by scott fagan in News

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As the CEO of Zappos.com, Tony Hsieh has achieved phenomenal company growth through revolutionary approaches to marketing, human resources, and customer service. Under his leadership, in 2009, Amazon acquired Zappos with shares valued at $1.2 billion.Hsieh believes in the science of happiness as a way to run a business.

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Zappos CEO: How Weird are You?

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U.S. Scientists Develop Artificial Blood for the Battlefield

Jul 18th

Posted by sammy3 in News

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(PhysOrg.com) — US scientists working for the experimental arm of the Pentagon have developed artificial blood for use in transfusions for wounded soldiers in battlefields. The blood cells are said to be functionally indistinguishable from normal blood cells and could end forever the problem of blood …

…The blood is made from hematopoietic stem cells from discarded human umbilical cords, which are turned into large quantities of red blood cells by a method called “blood pharming” that mimics the functions of bone marrow. Pharming is a method of using genetically engineered plants or animals to create medically useful substances in large quantities. Using this process the cells from one umbilical cord can produce about 20 units of blood, which is enough for over three transfusions for injured soldiers in the field.
The blood is being manufactured for the Defense Advanced Research Projects Agency (DARPA) by Ohio company Arteriocyte, which has already submitted samples of O-negative blood to the US Food and Drug Administration (FDA) for evaluation and safety testing. The company received funding of $1.95 million in 2008 to find a way of making large quantities of artificial blood.
Don Brown of Arteriocyte said the method works but the production needs to be scaled up to produce enough blood. Scaling up…

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U.S. Scientists Develop Artificial Blood for the Battlefield

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Dark Energy Sheds New Light on Universe’s Expansion

Jul 16th

Posted by WakRekBeext in News

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Through observations of massive galaxy clusters, scientists have made the most precise measurements to date of the effects of dark energy and gravity on cosmological scales. This work is an important step toward understanding why the expansion of the universe is accelerating.

…The analysis, contained in four papers published this month in the Monthly Notices of the Royal Astronomical Society, was led by a team based at the Kavli Institute for Particle Astrophysics and Cosmology, located at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University.
Clusters of galaxies, the largest gravitationally bound objects in the universe, began forming about 10 billion years ago. Because it takes a long time for light from the farthest reaches of the universe to arrive at Earth, the most distant clusters appear as they did when they were much younger, while the closest ones look more their actual ages. By looking at clusters both near and far, researchers were able to study the evolution of clusters and deduce how changes in the universe over billions of years helped shape their growth. The results offer insights into the forces that made the universe we see today.
“As space expands faster and faster, it becomes more difficult for gravity to pull matter…

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Dark Energy Sheds New Light on Universe’s Expansion

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Too Much Noise? How Misleading Data Warps Climate Debate

Jul 14th

Posted by WakRekBeext in News

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Too Much Noise? How Misleading Data Warps Climate Debate

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Is the Prius Eco-Friendly, or Ego-Friendly?

Jul 12th

Posted by WakRekBeext in News

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Can we get people to care about climate change? Perhaps the real question is whether or not we can get people to care about their self-image and help the environment as a result.

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Is the Prius Eco-Friendly, or Ego-Friendly?

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Black Hole Blows Big Bubble (w/pic)

Jul 8th

Posted by nimbyx in News

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Combining observations made with ESO’s Very Large Telescope and NASA’s Chandra X-ray telescope, astronomers have uncovered the most powerful pair of jets ever seen from a stellar black hole. This object, also known as a microquasar, blows a huge bubble of hot gas, 1000 light-years across, twice as large …

…”We have been astonished by how much energy is injected into the gas by the black hole,” says lead author Manfred Pakull. “This black hole is just a few solar masses, but is a real miniature version of the most powerful quasars and radio galaxies, which contain black holes with masses of a few million times that of the Sun.”
Black holes are known to release a prodigious amount of energy when they swallow matter. It was thought that most of the energy came out in the form of radiation, predominantly X-rays. However, the new findings show that some black holes can release at least as much energy, and perhaps much more, in the form of collimated jets of fast moving particles. The fast jets slam into the surrounding interstellar gas, heating it and triggering an expansion. The inflating bubble contains a mixture of hot gas and ultra-fast particles at different temperatures. Observations in several energy bands (optical, radio, X-rays) help astronomers calculate the total rate at which the black hole is heating…

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Black Hole Blows Big Bubble (w/pic)

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