Physics

Quantum Teleportation

Quantum teleportation is essential for many quantum information technologies, including long-distance quantum networks. Using fiber-coupled devices, including state-of-the-art low-noise superconducting nanowire single-photon detectors and off-the-shelf optics, scientists from Fermilab, Caltech, ATT, NASA’s Jet Propulsion Laboratory, the University of Calgary, and Harvard University have demonstrated sustained, long-distance (44 km of fiber) …

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Dark Matter In Universe

In a new paper in the journal Physical Review Letters, an international team of theoretical physicists described a scenario for the formation of primordial black holes from vacuum bubbles in the early Universe and discussed its intriguing realization that can naturally account for all of the dark matter. ‘Baby universes’ …

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Reversal Optical Waves

An international team of experimental physicists from the University of Queensland and Nokia Bell Labs has generated time reversed optical waves with a device capable of independently controlling all of light’s classical degrees of freedom simultaneously. Mounaix et al. develop a new technique to demonstrate the time reversal of optical …

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Universe’s Oldest Light

Using the polarization data from ESA’s Planck satellite, a mission that have studied the Cosmic Microwave Background (CMB), the oldest light in the Universe, a duo of astrophysicists has uncovered intriguing signs of new physics beyond the Standard Model of elementary particles and fields. As the CMB light (left image) …

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Solar CNO Neutrinos

For most of their existence, stars are fuelled by the fusion of hydrogen into helium. Fusion proceeds via two processes that are well understood theoretically: the proton-proton (p-p) chain and the carbon-nitrogen-oxygen (CNO) cycle. Neutrinos that are emitted along such processes in the solar core are the only direct probe …

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Ultra Hard Diamonds

  Diamonds might not be as rare or eternal as diamond miners would like everyone to believe, but they’re still rare enough that creating synthetic diamond is a worthwhile scientific endeavor. Natural diamonds only form deep in the Earth under intense heat and pressure, but researchers from the Australian National …

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Hypothetical Unruh Effect

The Unruh effect was described by Stephen Fulling in 1973, Paul Davies in 1975, and William Unruh in 1976. Sometimes called the Fulling-Davies-Unruh effect, it suggests that if you fly through a quantum vacuum with extreme acceleration, the vacuum no longer looks like a vacuum: rather, it looks like a …

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Two Types of Diamonds

A team of scientists from Australia and the United States has created two types of diamond — regular diamond and a diamond-like phase called lonsdaleite, which is found in nature at the sites of meteorite impacts — in minutes in a laboratory at room temperature, a process that normally takes …

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Tractor Laser Beam

An international team of researchers has proposed and demonstrated an efficient approach for triggering, trapping and guiding electrical discharges in air. Their technology is based on the use of a low-power laser beam that traps and transports light-absorbing particles in mid-air. Experimental configuration and principles of optical vortex beam for …

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Origin of Dark Matter

In a paper published this month in the journal Physical Review Letters, an international team of physicists described a new mechanism of dark matter production. Baker et al. described a new mechanism of dark matter production: if dark matter particles acquire mass during a first order phase transition, it is …

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