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Quantum Physics news

Friction in the vacuum?

(Phys.org)—When three physicists first discovered through their calculations that a decaying atom moving through the vacuum experiences a friction-like force, they were highly suspicious. The results seemed to go against ...

dateFeb 20, 2017 in Quantum Physics feature
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Physicists harness neglected properties of light

University of Toronto (U of T) researchers have demonstrated a way to increase the resolution of microscopes and telescopes beyond long-accepted limitations by tapping into previously neglected properties of light. The method ...

dateFeb 15, 2017 in Quantum Physics
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Success by deception

Theoretical physicists from ETH Zurich deliberately misled intelligent machines, and thus refined the process of machine learning. They created a new method that allows computers to categorize data—even when humans have ...

dateFeb 13, 2017 in Quantum Physics
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Will androids dream of quantum sheep?

Quantum replicants of responsive systems can be more efficient than classical models, say researchers from the Centre for Quantum Technologies in Singapore, because classical models have to store more past information than ...

dateFeb 13, 2017 in Quantum Physics
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Sorting machine for atoms

Physicists at the University of Bonn have cleared a further hurdle on the path to creating quantum computers: in a recent study, they present a method with which they can very quickly and precisely sort large numbers of atoms. ...

dateFeb 09, 2017 in Quantum Physics
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Bohr's quantum theory revised

Niels Bohr's atomic model was utterly revolutionary when it was presented in 1913. Although it is still taught in schools, it became obsolete decades ago. However, its creator also developed a much wider-ranging and less ...

dateFeb 08, 2017 in Quantum Physics
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Cleaning up quantum devices

A paper, based on NPL collaborative research, has been published in the journal Physical Review Letters The work paves the way for the identification and elimination of small amounts of surface defects whose presence on the ...

dateFeb 03, 2017 in Quantum Physics
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First step towards photonic quantum network

Advanced photonic nanostructures are well on their way to revolutionising quantum technology for quantum networks based on light. Researchers from the Niels Bohr Institute have now developed the first building blocks needed ...

dateJan 25, 2017 in Quantum Physics
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Studying the quantum vacuum: Traffic jam in empty space

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by Professor Alfred Leitenstorfer has now shown how to manipulate the ...

Seeing the quantum future... literally

Scientists at the University of Sydney have demonstrated the ability to "see" the future of quantum systems, and used that knowledge to preempt their demise, in a major achievement that could help bring the strange and powerful ...

Quantum membranes for ultraprecise mechanical measurements

Quantum mechanics dictates sensitivity limits in the measurements of displacement, velocity and acceleration. A recent experiment at the Niels Bohr Institute probes these limits, analyzing how quantum fluctuations set a sensor ...

Fast track control accelerates switching of quantum bits

From laptops to cellphones, today's technology advances through the ever-increasing speed at which electric charges are directed through circuits. Similarly, speeding up control over quantum states in atomic and nanoscale ...

Weak-value-based metrology surpasses classical limit

(Phys.org)—When measuring very small physical effects, such as the deflection of a light beam, the very act of measuring can affect the measurement outcome. Now in a new study, physicists have experimentally demonstrated ...

Researchers improve qubit lifetime for quantum computers

An international team of scientists has succeeded in making further improvements to the lifetime of superconducting quantum circuits. An important prerequisite for the realization of high-performance quantum computers is ...

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