Quantum Physics News

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Giant Molecular Clouds Embedded in Fog Which Permeates the Galactic Disc

A multi-year study of the Whirlpool galaxy (M51) has changed our understanding of giant molecular clouds, in which stars are born. The new study, which mapped 1,500 such clouds, shows that, instead, they are embedded in a kind of molecular fog, which permeates the whole of the galactic disc. Pressure exerted by this fog is crucial in determining whether or not new stars will form within the clouds.

12 Dec 2013

Phase Transition May Occur Between an Empty Spacetime and an Expanding Universe

When soup is heated, it starts to boil. When time and space are heated, an expanding universe can emerge, without requiring anything like a "Big Bang". This phase transition between a boring empty space and an expanding universe containing mass has now been mathematically described by a research team at the Vienna University of Technology, together with colleagues from Harvard, the MIT and Edinburgh.

12 Dec 2013

‘Assembling Galaxies of Resolved Anatomy’ Project to Compare Computer Simulations of Galaxy Formation

One of the most powerful tools for understanding the formation and evolution of galaxies has been the use of computer simulations--numerical models of astrophysical processes run on supercomputers and compared with astronomical observations. Getting computer simulations to produce realistic-looking galaxies has been a challenge, however, and different codes (simulation programs) produce inconsistent results.

12 Dec 2013

Physicists Propose New Concept for Improvement of Electron-Beam-Powered Plasma Accelerators

A team around DESY’s plasma acceleration researcher Jens Osterhoff has developed a new concept to improve electron-beam-powered plasma accelerators. Simulations suggest that their idea should enable the acceleration of very high-quality particle bunches. The DESY researchers, who are planning experiments at SLAC in the USA and FLASH in Hamburg, have now presented the results of their studies in the scientific journal Physical Review Letters.

12 Dec 2013

Flaring Stars May be the Cause of Mysterious ‘Fast Radio Bursts’

First discovered in 2007, "fast radio bursts" continue to defy explanation. These cosmic chirps last for only a thousandth of a second. The characteristics of the radio pulses suggested that they came from galaxies billions of light-years away. However, new work points to a much closer origin - flaring stars within our own galaxy.

12 Dec 2013

In the Presence of a Magnetic Field, Negative Resistivity Can Produce Positive Resistance

In a paper appearing in Nature's Scientific Reports, Dr. Ramesh Mani, professor of physics and astronomy at Georgia State University, reports that, in the presence of a magnetic field, negative resistivity can produce a positive resistance, along with a sign reversal in the Hall effect, in GaAs/AlGaAs semiconductor devices.

12 Dec 2013

Near Broken-Gap TFET Utilizes Quantum Mechanical Tunneling of Electrons to Provide High Current at Low Voltage

Penn State researchers have proved the feasibility of a new type of transistor that could make possible fast and low-power computing devices for energy constrained applications such as smart sensor networks, implantable medical electronics, and ultra-mobile computing. Called a near broken-gap tunnel field effect transistor (TFET), the new device uses the quantum mechanical tunneling of electrons through an ultrathin energy barrier to provide high current at low voltage.

12 Dec 2013

NSF Awards $1.32 Million Grant for Study on Einstein's Theory of Relativity

Could Einstein's theory of relativity be wrong? That's among the burning questions being asked by theoretical physicists today. It's a startling claim and one that has received a lot of attention from other scientists.

12 Dec 2013

Rice-Columbia University Course on Condensed Matter Physics

Though massive open online courses, or MOOCs, are all the rage in online education, a smaller, quieter experiment has played out Tuesday and Thursday afternoons this semester in an old office on the third floor of the Space Science building.

11 Dec 2013

IBM Research Scientists Demonstrate Complex Quantum Mechanical Phenomenon Using Luminescent Plastic

For the first time, scientists at IBM Research have demonstrated a complex quantum mechanical phenomenon known as Bose-Einstein condensation (BEC), using a luminescent polymer (plastic) similar to the materials in light emitting displays used in many of today's smartphones.

11 Dec 2013

Quantum Physics News

Giant Molecular Clouds Embedded in Fog Which Permeates the Galactic Disc

Phase Transition May Occur Between an Empty Spacetime and an Expanding Universe

‘Assembling Galaxies of Resolved Anatomy’ Project to Compare Computer Simulations of Galaxy Formation

Physicists Propose New Concept for Improvement of Electron-Beam-Powered Plasma Accelerators

Flaring Stars May be the Cause of Mysterious ‘Fast Radio Bursts’

In the Presence of a Magnetic Field, Negative Resistivity Can Produce Positive Resistance

Near Broken-Gap TFET Utilizes Quantum Mechanical Tunneling of Electrons to Provide High Current at Low Voltage

NSF Awards $1.32 Million Grant for Study on Einstein's Theory of Relativity

Rice-Columbia University Course on Condensed Matter Physics

IBM Research Scientists Demonstrate Complex Quantum Mechanical Phenomenon Using Luminescent Plastic

Quantum Development in Ireland: A Conversation with John Durcan, Chief Technologist, IDA Ireland

Advancing Quantum Scalability with New Qubit Method

Modified Newtonian Dynamics and the Search for a Ninth Planet

LabOne Q: An Intuitive Software Framework for Scalable Quantum Computing

ORCA-Quest qCMOS Camera by Hamamatsu

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Repeat-Until-Success Algorithm for Quantum Gate Decomposition

Researchers Exploit the Color Centers in Diamond to Enhance Dynamic Nuclear Polarization Processes for NMR Applications

Application of Electro-Optic Phase Modulator in Pound-Drever Hall Technique for Laser Frequency Stabilization

Quantum Physics News

Quantum Development in Ireland: A Conversation with John Durcan, Chief Technologist, IDA Ireland

Advancing Quantum Scalability with New Qubit Method

Modified Newtonian Dynamics and the Search for a Ninth Planet

1STM Unveils the Secrets of Chiral Interfaces

2Breakthrough for Next-Generation Quantum Computing

3Exploring Black Hole-Level Scrambling in Chemical Reactions

4Exploring Quantum Mechanics with a Tiny Interferometric Sensor

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