Last update Physicists discuss quantum pigeonhole principle, Jul 26, 2014
The pigeonhole principle: "If you put three pigeons in two pigeonholes at least two of the pigeons end up in the same hole." So where's the argument? Physicists say there is an important argument. While the ...
Jul 26, 2014
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Quantum computers have yet to materialise. Yet, scientists are making progress in devising suitable means of making such computers faster. One such approach relies on quantum dots—a kind of artificial atom, ...
Jul 24, 2014
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Physicists Sergei Filippov (MIPT and Russian Quantum Center at Skolkovo) and Mario Ziman (Masaryk University in Brno, Czech Republic, and the Institute of Physics in Bratislava, Slovakia) have found a way ...
Jul 23, 2014
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So far it exists mainly in theory, but if invented, the large-scale quantum computer would change computing forever. Rather than the classical data-encoding method using binary digits, a quantum computer would process information ...
Jul 23, 2014
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Vacuum fluctuations may be among the most counter-intuitive phenomena of quantum physics. Theorists from the Weizmann Institute (Rehovot, Israel) and the Vienna University of Technology propose a way to amplify ...
Jul 22, 2014
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Dartmouth scientists and their colleagues have devised a breakthrough laser that uses a single artificial atom to generate and emit particles of light. The laser may play a crucial role in the development of quantum computers, ...
Jul 22, 2014
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When a two-body relation becomes a three-body relation, the behaviour of the system changes and typically becomes more complex. While the basic physics of two interacting particles is well understood, the ...
Jul 21, 2014
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A photon is the quantum particle of light and electromagnetic radiation. A phonon is its equivalent when it comes to mechanical vibrations of matter and heat transmission. Although it might seem surprising, electromagnetic ...
Jul 21, 2014
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(Phys.org) —Has a persistent noise ever kept you awake at night? Well it isn't just you. Scientists at The University of Nottingham have had the same problem with quantum technologies.
Jul 18, 2014
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(Phys.org) —Physicists have created a unique combination of computer models, based on the theory of quantum mechanics, and applied them to a previously well characterised protein found in muscle to develop a new picture ...
Jul 17, 2014
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Over the next five years, the UK government will spend £270m on supporting research in "quantum technology". When budget announcements were made in 2013, provisions for offshore wind and shale gas extraction were received ...
Jul 16, 2014
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(Phys.org) —While entangling cats with atoms is not exactly an active area of research in any physics lab today (as far as anyone knows), many physicists are working on a close analogy of Schrödinger's ...
Jul 15, 2014
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(Phys.org) —While quantum states are typically referred to as particles or waves, this is not actually the case. Rather, quantum states have complementary discrete particlelike and continuous wavelike properties ...
Jul 15, 2014
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(Phys.org) —Scientists at Yale University have demonstrated the ability to track real quantum errors as they occur, a major step in the development of reliable quantum computers. They report their results ...
Jul 14, 2014
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Weizmann Institute scientists have demonstrated for the first time a photonic router – a quantum device based on a single atom that enables routing of single photons by single photons. This achievement, ...
Jul 14, 2014
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Can physical systems from bacteria to black holes act as a computer? A University of York computer scientist and colleagues from the universities of Oxford and Leeds address this question in newly published research which ...
Jul 11, 2014
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Quasiparticles can be used to explain physical phenomena in solid bodies even though they are not actual physical particles. Physicists in Innsbruck have now realized quasiparticles in a quantum system and ...
Jul 09, 2014
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When a superconductor is exposed to a magnetic field, a current on its surface appears which creates a counter field that cancels the magnetic field inside the superconductor. This phenomenon, known as "Meissner-Ochsenfeld ...
Jul 09, 2014
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(Phys.org) —Researchers have developed a way for superconducting quantum chips to talk to each other over large distances through an optical fibre, allowing quantum entanglement or teleportation - both ...
Jul 04, 2014
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Theorists propose a way to make superconducting quantum devices such as Josephson junctions and qubits, atom-by-atom, inside a silicon crystal. Such systems could combine the most promising aspects of silicon ...
Jul 02, 2014
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(Phys.org) —A team of researchers working at the University of Padua in Italy has bounced polarized photons off of four in-flight satellites to show that quantum communications between such satellites and ...
Jun 30, 2014
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(Phys.org) —In quantum physics, momentum and position are an example of conjugate variables. This means they are connected by Heisenberg's Uncertainty Principle, which says that both quantities cannot be ...
Jun 27, 2014
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Quantum mechanics is about to fundamentally change the way we can transmit and sense information. The idea is that information—represented by physical quantities such as the spin or the polarisation of ...
Jun 26, 2014
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Press the start button, switch on the monitor, grab a cup of coffee and off you go. That is pretty much how most us experience booting up a computer. But with a quantum computer the situation is very different. ...
Jun 23, 2014
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Researchers at the University of Tokyo and Japan's National Institute for Materials Science have discovered pure organic substances exhibiting the quantum spin liquid state.
Jun 23, 2014
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The D-Wave computer is currently the latest link of a long chain of computers designed for the solution of optimization problems. In what sense does it realize quantum computation? We describe the evolution of such computers ...
(Phys.org) —An independent research team with members affiliated with several universities in the U.S. and Switzerland has concluded that the D-Wave Two computer shows no signs of quantum speedup. They've ...
(Phys.org)—University of Queensland researchers have simulated time travel using light particles. Lead author and PhD student Martin Ringbauer, from UQ's School of Mathematics and Physics, said the study ...
In a recent study published in Science, researchers at ICFO construct multipartite Bell inequalities built from the easiest-to-measure quantities, the two-body correlators, which are capable of revealing ...
There is an up-and-coming set of technologies that uses the strange properties of atomic particles predicted by the theory of quantum mechanics, which is the physics of the very small stuff. This technology ...
(Phys.org) —Midsummer has found the physics community in a contemplative if not esoteric mood as Physicists discuss quantum pigeonhole principle—if you take three pigeons and put them in two holes, then yo ...
An elusive state of matter called superconductivity could be realized in stacks of sheetlike crystals just a few atoms thick, a trio of physicists has determined.
A new method of building materials using light, developed by researchers at the University of Cambridge, could one day enable technologies that are often considered the realm of science fiction, such as invisibility ...
Norwegian explorer Roald Amundsen became the first man to reach the South Pole in December of 1911. More than 100 years later, an international team of scientists led by Joe McConnell of Nevada's Desert Research ...
Just as a leaky roof can make a house cooler and wetter when it's raining as well as hotter and dryer when it's sunny, changes in land use can affect river flow in both rainy and dry times, say two University of Iowa researchers.
Samsung Electronics said Monday it would postpone the roll-out of its new smartphone based on Tizen, a home-grown operating system aimed at breaking away from Google's Android system.
Dinosaurs might have survived the asteroid strike that wiped them out if it had taken place slightly earlier or later in history, scientists say.
(AP)—Major U.S. companies are starting to reap their most rapid growth in fertile lands of opportunity far from home.
(AP)—Thirty university and college professors say government restrictions on the use of small drones are likely to stifle academic research.
(HealthDay)—U.S. oncology fellows may underestimate the workload they will experience once they enter practice, according to research published online July 21 in the Journal of Clinical Oncology.
The National Physical Laboratory (NPL) has published research in Nature Communications that updates one of the most fundamental concepts in the physics of quantum electronic devices - the standard tunnel ...
Take a fine strand of silica fiber, attach it at each end to a slow-turning motor, gently torture it over an unflickering flame until it just about reaches its melting point and then pull it apart. The middle ...
(Phys.org) —A team of physicists in Europe, led by Marcin Pawlowski, has proposed a way to use entangled quantum particles to improve the odds of winning in the game of bridge. As the team notes in their ...
Researchers used quantum theory – usually invoked to describe the actions of subatomic particles – to identify an unexpected and strange pattern in how people respond to survey questions.
(Phys.org) —A small team of physicists from the U.S. and Denmark has published a paper in the journal Nature Physics outlining the idea of a collection of atomic clocks located around the world—all networ ...
(Phys.org) —Australian engineers detect in real-time the quantum spin properties of a pair of atoms inside a silicon chip, and disclose new method to perform quantum logic operations between two atoms.
Albert Einstein may be most famous for his mass-energy equivalence formula E = mc2, but his work also laid down the foundation for modern quantum mechanics.
The quantum tunnel effect manifests itself in a multitude of well-known phenomena. Experimental physicists in Innsbruck, Austria, have now directly observed quantum particles transmitting through a whole ...
Patients with heart failure engage in a delicate balancing act all year, taking care not to drink too much liquid because the weakened heart muscle cannot cope with excess fluid.
(AP)—A drugmaker is clashing with pediatricians over new recommendations to limit use of a costly medicine for preventing serious lung problems in preemies and other high-risk children.
The enduring popularity of "little tiger" as a snack to accompany a beer in Vietnam means that cat owners live in constant fear of animal snatchers, despite an official ban.
In one of the largest prevalence studies to date, researchers from the U.K. provide national, regional, and global genotype prevalence estimates for the hepatitis C virus (HCV). Findings published in Hepatology, a journa ...
The first systematic analysis of hepatitis E virus (HEV) transmission by blood components indicates that about 1 in 3000 donors in England have HEV in their plasma. The findings, published in The Lancet, suggest that around ...
Scientists have discovered a new species of mayfly in the southern Western Ghats, a mountain range along the west coast of India. In fact, this is the first time that any mayfly belonging to the genus Labiobaetis has be ...
(HealthDay)—The risk of hospitalized bacterial infections in older rheumatoid arthritis (RA) patients is similar for rituximab or abatacept compared to etanercept, although it is higher for infliximab, ...
Sapphire screens for the next iPhone? Sapphire is second only to diamond in hardness scratch-proof properties, used in making LEDs, missiles sensors, and on screens for luxury-tier phones. Last year, the ...
Two new pill-only antiviral drug regimens could provide shorter, more effective treatment options with fewer side effects for the majority of patients infected with hepatitis C, even those most difficult to treat, according ...
Giving parents access to a website containing information about the measles, mumps and rubella (MMR) vaccine is the most cost-effective way of increasing its uptake, new University of Leeds research has found.
Oxford University scientists have shown that a powerful drug given at the time of a kidney transplant operation not only halves the early risk of rejection, but that it also allows a less toxic regimen of anti-rejection drugs ...
A new study has found that following a healthy lifestyle may lower childhood cancer survivors' risk of developing the metabolic syndrome. Published early online in CANCER, a peer-reviewed journal of the American Cancer Societ ...
South Korea on Monday reported its second case of foot-and-mouth disease in less than a week, triggering fearful memories of a devastating 2011 outbreak that forced the culling of millions of livestock.
(AP)—Sohu.com Inc., operator of a popular Chinese Internet portal, said Monday it lost $45 million in the latest quarter while revenue rose 18 percent to $400 million.
(AP)—One of Liberia's most high-profile doctors has died of Ebola, officials said Sunday, and an American physician was being treated for the deadly virus, highlighting the risks facing health workers trying ...
Many studies have shown the potential for global climate change to cut food supplies. But these studies have, for the most part, ignored the interactions between increasing temperature and air pollution—specifically ozone ...
In a close collaborative effort, Spanish and Austrian physicists have experimentally encoded one quantum bit (qubit) in entangled states distributed over several particles and for the first time carried out ...
(Phys.org) —Research is being conducted worldwide to develop a new type of computational device known as a quantum computer, based on the principles of quantum physics. Quantum computers could tackle specialized ...
(Phys.org) —Cryptography – the art and science of providing secure communications – typically employs three methods to authenticate users and prevent data theft: secret key (symmetric) cryptography, which ...
A form of quantum weirdness is a key ingredient for building quantum computers according to new research from a team at the University of Waterloo's Institute for Quantum Computing (IQC).
One of the important tasks for quantum physics researchers and engineers is designing more sensitive instruments to study the tiny fields and forces that govern the world we live in. The most precise measuring ...
(AP)—One of Germany's newest coal-fired power plants rises here from the banks of a 100-year-old canal that once shipped coal mined from the Ruhr Valley to the world.
Engineers across the globe have been racing to design smaller, cheaper and more efficient rechargeable batteries to meet the power storage needs of everything from handheld gadgets to electric cars.
Pacific island leaders will renew calls for meaningful action on climate change at a regional summit opening in Palau on Tuesday, amid fears rising seas will swamp their low-lying nations.
A new in vitro study has revealed that nicotine and cotinine, a metabolite of nicotine, can potentially inhibit DNA damage caused by a certain carcinogen in smoke.
(AP)—The chairmen of the House and Senate Veterans Affairs committees have reached a tentative agreement on a plan to fix a veterans' health care system scandalized by long patient wait times and falsified records covering ...
(AP)—Researchers at the University of Connecticut are using medical technology to breathe new life into some antique musical instruments.
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