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Quantum Sciences

Ernie goes Quantum

Ernie, the premium bond number generator, has gone quantum, and will run through 79 billion premium bonds to pluck out 3 million winners in just 12 minutes each month. The first Ernie (Electronic Random Number Indicator Equipment) was built in 1956 and was the size of a van.The last one, Ernie 4 was built in 2004 was no bigger than your old DVD player. Come to today and Ernie’s quantum…

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Warp Speed – how close are we?

Everybody knows ‘the speed of light’ is fast. The only thing faster is Chuck Norris, who, the legend goes, can turn out the lights and be under the covers before the room gets dark. But just how fast is light? And does it always move the exact same speed? Can we use light to transmit data in a way that harnesses its speed as one of the fastest actors in…

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Designer materials with completely random structures might enable quantum computing

Topological randomness may be the answer for lossless electronics and making the nuts and bolts of quantum computers. Complete randomness in the structures of superconductors and insulators could lower the requirements of pristine crystalline ordering — and make them more accessible to industry. Read More

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NOvA experiment sees strong evidence for antineutrino oscillation

The NOvA collaboration has announced its first results using antineutrinos, and has seen strong evidence of muon antineutrinos oscillating into electron antineutrinos over long distances, a phenomenon that has never been unambiguously observed. Read More

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Atomic clock comparison confirms key assumptions of ‘Einstein’s elevator’

By comparing different types of remote atomic clocks, physicists have performed the most accurate test ever of a key principle underlying Albert Einstein’s famous theory of general relativity, which describes how gravity relates to space and time. Read More

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Direct coupling of the Higgs boson to the top quark observed

An observation made by the CMS experiment at CERN unambiguously demonstrates the interaction of the Higgs boson and top quarks, which are the heaviest known subatomic particles. This major milestone is an important step forward in our understanding of the origins of mass. Read More

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Spooky quantum particle pairs fly like weird curveballs

Some particles that can be in two places at the same time and are not just particles but also waves, in this case, fermions, appear to move in even weirder ways than previously thought. Theoretical physicists applied extreme computing power for a week to predict the movements of fermions by including quantum optics, or light-like, ideas in their mathematical, theoretical modeling. Read More

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Findings could spur energy-saving electronics, quantum computing

Physicists has demonstrated a way to conduct electricity between transistors without energy loss, opening the door to low-power electronics and, potentially, quantum computing that would be far faster than today’s computers. Their findings involved using a special mix of materials with magnetic and insulator properties. Read More

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Seeing the light? Study illuminates how quantum magnets mimic light

What is light? It sounds like a simple question, but it is one that has occupied some of the best scientific minds for centuries. Read More

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Transferring quantum information using sound

Quantum physics has led to new types of sensors, secure data transmission methods and researchers are working toward computers. However, the main obstacle is finding the right way to couple and precisely control a sufficient number of quantum systems (for example, individual atoms). Read More

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Mono-energetic neutrinos with enough energy to produce a muon

Scientists recently reexamined data from the MiniBooNE experiment at Fermilab taken between 2009 and 2011, and they found the first direct evidence of mono-energetic neutrinos, or neutrinos with definite energy, that are energetic enough to produce a muon. Read More

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Quantum stopwatch stores time in a quantum memory

Physicists have developed a “quantum stopwatch”—a method that stores time (in the form of states of quantum clocks) in a quantum memory. In doing so, the method avoids the accumulation of errors that usually occurs when measuring the duration of a sequence of events. In this way, the quantum stopwatch increases the accuracy of measuring time at the quantum level, which is essential for applications such as GPS, astronomy research,…

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Detecting the birth and death of a phonon

Phonons are discrete units of vibrational energy predicted by quantum mechanics that correspond to collective oscillations of atoms inside a molecule or a crystal. When such vibrations are produced by light interacting with a material, the vibrational energy can be transferred back and forth between individual phonons and individual packets of light energy, the photons. This process is called the Raman effect. Read More

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Transferring quantum information using sound

Scientists have found a new way to transfer quantum information. They propose using tiny mechanical vibrations. The atoms are coupled with each other by ‘phonons’ — the smallest quantum mechanical units of vibrations or sound waves. Read More

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Physicists use terahertz flashes to uncover state of matter hidden by superconductivity

A research team has developed a new quantum switching scheme that gives them access to new and hidden states of matter. If researchers can learn to control the hidden state, further stabilize it and determine whether it’s suitable for quantum logic operations, it could allow researchers to use it for quantum computing and other practical functions. Read More

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Researchers find evidence suggesting spin liquids in ferromagnets may be similar to dipole liquids in ferroelectrics

A team of researchers with members from several institutions in the U.S. and Russia has found evidence that suggests spin liquids in ferromagnets may be similar to dipole liquids in ferroelectrics. In their paper published in the journal Science, the group describes their study of molecular crystals and what they found. Ben Powell with the University of Queensland offers a Perspective piece on the work done by the team in…

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Scientists go deep to quantify perovskite properties

Scientists have discovered properties in naturally occurring solution-processed quantum wells that are likely to impact the growing field of low-cost perovskite based optoelectronics. They created a general scaling law that researchers can use to determine how to tune the electronic properties of 2D perovskite-based materials for devices. Read More

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Single molecular insulator pushes boundaries of current state of the art

Researchers have synthesized the first molecule capable of insulating at the nanometer scale more effectively than a vacuum barrier. The team’s insight was to exploit the wave nature of electrons. By designing an extremely rigid silicon-based molecule under 1 nm in length that exhibited comprehensive destructive interference signatures, they devised a novel technique for blocking tunnelling conduction. This new design principle has the potential to support continued miniaturization of classic…

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Seeing the light? Study illuminates how quantum magnets mimic light

What is light? It sounds like a simple question, but it is one that has occupied some of the best scientific minds for centuries. Read More

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Cooling by laser beam

A laser pulse that for a few picoseconds transforms a material into a high-temperature superconductor. Different experiments have unveiled this interesting phenomenon, with potential applicative implications. Research carried out by scientists a year ago had already provided several basic principles of the phenomenon. Read More

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