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Editors' Picks:



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Physics/Chemistry News
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Today's physics/chemistry headlines from the sources selected by our team:

A transistor-like amplifier for single photons
Data transmission over long distances usually utilizes optical techniques via glass fibres – this ensures high speed transmission combined with low power dissipation of the signal. For quite some years possibilities have been explored how to go one step further and perform all-optical data processing, with optical transistors and optical logic gates. In particular in the case of quantum information this option would be highly recommendable as the information is often stored in faint light pulses which – at the ultimate limit – contain a single photon only. A team around Professor Gerhard Rempe, Leader of the Quantum Dynamics Division and Director at the Max Planck Institute of Quantum Optics, has now made a kind of optical transistor using a cloud of ultracold rubidium atoms. With this new device they observed a twentyfold amplification of signal variations at the one-photon level.
Phys.org: General Physics News, Tue, 29 Jul 2014 14:21:25 GMT

Serial time-encoded amplified microscopy for ultrafast imaging based on multi-wavelength laser
Ultrafast real-time optical imaging is an effective and important tool for studying dynamical events, such as shock waves, neural activity, laser surgery and chemical dynamics in living cells. Limited by the frame rate, conventional imaging system such as charge-coupled device (CCD) and complementary metal oxide semiconductor (CMOS) imaging device can not image fast dynamic processes.
Phys.org: General Physics News, Tue, 29 Jul 2014 14:21:25 GMT

Measuring the smallest magnets: Physicists measured magnetic interactions between single electrons
Imagine trying to measure a tennis ball that bounces wildly, every time to a distance a million times its own size. The bouncing obviously creates enormous "background noise" that interferes with the measurement. But if you attach the ball directly to a measuring device, so they bounce together, you can eliminate the noise problem.
Phys.org: General Physics News, Tue, 29 Jul 2014 14:21:25 GMT

New theory predicts magnets may act as wireless cooling agents.
The magnets cluttering the face of your refrigerator may one day be used as cooling agents, according to a new theory formulated by MIT researchers.
Phys.org: General Physics News, Tue, 29 Jul 2014 14:21:25 GMT

Physicists unlock nature of high-temperature superconductivity
Physicists have identified the 'quantum glue' that underlies a promising type of superconductivity -- a crucial step towards the creation of energy superhighways that conduct electricity without current loss.
Physics News -- ScienceDaily, Tue, 29 Jul 2014 14:21:25 GMT

Measuring the smallest magnets: Physicists measure magnetic interactions between single electrons
Imagine trying to measure a tennis ball that bounces wildly, every time to a distance a million times its own size. The bouncing obviously creates enormous "background noise" that interferes with the measurement. But if you attach the ball directly to a measuring device, so they bounce together, you can eliminate the noise problem. Physicists have used a similar trick to measure the interaction between the smallest possible magnets -- two single electrons -- after neutralizing magnetic noise that was a million times stronger than the signal they needed to detect.
Physics News -- ScienceDaily, Tue, 29 Jul 2014 14:21:25 GMT

A transistor-like amplifier for single photons
Scientists have achieved a twentyfold amplification of single-photon signals with the help of an ultracold quantum gas.
Physics News -- ScienceDaily, Tue, 29 Jul 2014 14:21:25 GMT

New correction to speed of light could explain SN1987 neutrino burst
Gravitational effect on virtual particles violates equivalence principle
physicsworld.com: news, Tue, 29 Jul 2014 14:21:25 GMT

Paradoxical pigeons are the latest quantum conundrum
Electron interferometry could test new quantum effect
physicsworld.com: news, Tue, 29 Jul 2014 14:21:25 GMT

CERN accelerators come alive for LHC restart
Multitude of experiments will be switched on during the next four months
physicsworld.com: news, Tue, 29 Jul 2014 14:21:25 GMT

Mineral magic? Common mineral capable of making and breaking bonds
Reactions among minerals and organic compounds in hydrothermal environments are critical components of the Earth's deep carbon cycle, they provide energy for the deep biosphere, and may have ...
Physics News, Tue, 29 Jul 2014 14:21:25 GMT

New method provides researchers with efficient tool for tagging proteins
Physics News, Tue, 29 Jul 2014 14:21:25 GMT

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PhysOrg.com
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white line spacer Physical Review Focus
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