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Categories: Geoscience: Geology, Physics: Quantum Computing

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Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Out of this world control on Ice Age cycles      (via sciencedaily.com)     Original source 

A research team, composed of climatologists and an astronomer, have used an improved computer model to reproduce the cycle of ice ages (glacial periods) 1.6 to 1.2 million years ago. The results show that the glacial cycle was driven primarily by astronomical forces in quite a different way than it works in the modern age. These results will help us to better understand the past, present, and future of ice sheets and the Earth's climate.

Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geology Paleontology: Climate
Published

Great Bas­in: His­tory of water sup­ply in one of the dri­est regions in the USA      (via sciencedaily.com)     Original source 

An international team has reconstructed the evolution of groundwater in the Great Basin, USA -- one of the driest regions on Earth -- up to 350,000 years into the past with unprecedented accuracy. The results shed new light on the effects of climate change on water supply and provide important insights for the sustainable use of groundwater resources.

Chemistry: Biochemistry Engineering: Graphene Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

With new experimental method, researchers probe spin structure in 2D materials for first time      (via sciencedaily.com)     Original source 

In the study, a team of researchers describe what they believe to be the first measurement showing direct interaction between electrons spinning in a 2D material and photons coming from microwave radiation.

Computer Science: General Computer Science: Quantum Computers Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Researcher uses artificial intelligence to discover new materials for advanced computing      (via sciencedaily.com)     Original source 

Researchers have identified novel van der Waals (vdW) magnets using cutting-edge tools in artificial intelligence (AI). In particular, the team identified transition metal halide vdW materials with large magnetic moments that are predicted to be chemically stable using semi-supervised learning. These two-dimensional (2D) vdW magnets have potential applications in data storage, spintronics, and even quantum computing.

Chemistry: Biochemistry Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Physicists discover 'stacked pancakes of liquid magnetism'      (via sciencedaily.com)     Original source 

Physicists have discovered stacked pancakes of 'liquid' magnetism that may account for the strange electronic behavior of some layered helical magnets.

Biology: Biochemistry Biology: Marine Biology: Microbiology Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Geology
Published

How life and geology worked together to forge Earth's nutrient rich crust      (via sciencedaily.com)     Original source 

Around 500 million years ago life in the oceans rapidly diversified. In the blink of an eye -- at least in geological terms -- life transformed from simple, soft-bodied creatures to complex multicellular organisms with shells and skeletons. Now, research has shown that the diversification of life at this time also led to a drastic change in the chemistry of Earth's crust -- the uppermost layer we walk on and, crucially, the layer which provides many of the nutrients essential to life.

Engineering: Nanotechnology Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Leaky-wave metasurfaces: A perfect interface between free-space and integrated optical systems      (via sciencedaily.com)     Original source 

Researchers have developed a new class of integrated photonic devices -- 'leaky-wave metasurfaces' -- that convert light initially confined in an optical waveguide to an arbitrary optical pattern in free space. These are the first to demonstrate simultaneous control of all four optical degrees of freedom. Because they're so thin, transparent, and compatible with photonic integrated circuits, they can be used to improve optical displays, LIDAR, optical communications, and quantum optics.

Computer Science: Quantum Computers Engineering: Graphene Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Symmetric graphene quantum dots for future qubits      (via sciencedaily.com)     Original source 

Quantum dots in semiconductors such as silicon or gallium arsenide have long been considered hot candidates for hosting quantum bits in future quantum processors. Scientists have now shown that bilayer graphene has even more to offer here than other materials. The double quantum dots they have created are characterized by a nearly perfect electron-hole-symmetry that allows a robust read-out mechanism -- one of the necessary criteria for quantum computing.

Engineering: Robotics Research Environmental: General Environmental: Water Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Quantum lidar prototype acquires real-time 3D images while fully submerged underwater      (via sciencedaily.com)     Original source 

Researchers have demonstrated a prototype lidar system that uses quantum detection technology to acquire 3D images while submerged underwater. The high sensitivity of this system could allow it to capture detailed information even in extremely low-light conditions found underwater.

Environmental: General Geoscience: Earth Science Geoscience: Geology
Published

New clues about the rise of Earth's continents      (via sciencedaily.com)     Original source 

New research deepens the understanding of Earth's crust by testing and ultimately eliminating one popular hypothesis about why continental crust is lower in iron and more oxidized compared to oceanic crust. The iron-poor composition of continental crust is a major reason why vast portions of the Earth's surface stand above sea level as dry land, making terrestrial life possible today. The study uses laboratory experiments to show that the iron-depleted, oxidized chemistry typical of Earth's continental crust likely did not come from crystallization of the mineral garnet, as a popular explanation proposed in 2018.

Chemistry: Biochemistry Computer Science: Quantum Computers Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Researchers develop manual for engineering spin dynamics in nanomagnets      (via sciencedaily.com)     Original source 

An international team of researchers has developed a comprehensive manual for engineering spin dynamics in nanomagnets -- an important step toward advancing spintronic and quantum-information technologies.

Computer Science: General Computer Science: Quantum Computers Mathematics: Puzzles Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Quan­tum com­puter in reverse gear      (via sciencedaily.com)     Original source 

Large numbers can only be factorized with a great deal of computational effort. Physicists are now providing a blueprint for a new type of quantum computer to solve the factorization problem, which is a cornerstone of modern cryptography.

Chemistry: Inorganic Chemistry Computer Science: Quantum Computers Offbeat: Computers and Math Offbeat: General Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Tunneling electrons      (via sciencedaily.com)     Original source 

By superimposing two laser fields of different strengths and frequency, the electron emission of metals can be measured and controlled precisely to a few attoseconds. Physicists have shown that this is the case. The findings could lead to new quantum-mechanical insights and enable electronic circuits that are a million times faster than today.

Chemistry: Biochemistry Offbeat: General Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Scientists demonstrate unprecedented sensitivity in measuring time delay between two photons      (via sciencedaily.com)     Original source 

A team of researchers has demonstrated the ultimate sensitivity allowed by quantum physics in measuring the time delay between two photons. This breakthrough has significant implications for a range of applications, including more feasible imaging of nanostructures, including biological samples, and nanomaterial surfaces, as well as quantum enhanced estimation based on frequency-resolved boson sampling in optical networks.

Computer Science: General Computer Science: Quantum Computers Mathematics: Modeling Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Scientists have full state of a quantum liquid down cold      (via sciencedaily.com)     Original source 

A team of physicists has illuminated certain properties of quantum systems by observing how their fluctuations spread over time. The research offers an intricate understanding of a complex phenomenon that is foundational to quantum computing.

Offbeat: General Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Putting hydrogen on solid ground: Simulations with a machine learning model predict a new phase of solid hydrogen      (via sciencedaily.com)     Original source 

Hydrogen, the most abundant element in the universe, is found everywhere from the dust filling most of outer space to the cores of stars to many substances here on Earth. This would be reason enough to study hydrogen, but its individual atoms are also the simplest of any element with just one proton and one electron.

Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Geography Geoscience: Geology
Published

Ridgecrest faults increasingly sensitive to solid Earth tides before earthquakes      (via sciencedaily.com)     Original source 

Faults in the Ridgecrest, California area were very sensitive to solid earth tidal stresses in the year and a half before the July 2019 Ridgecrest earthquake sequence.

Computer Science: Quantum Computers Offbeat: Computers and Math Offbeat: General Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Quantum entanglement could make accelerometers and dark matter sensors more accurate      (via sciencedaily.com)     Original source 

The 'spooky action at a distance' that once unnerved Einstein may be on its way to being as pedestrian as the gyroscopes that currently measure acceleration in smartphones.

Environmental: General Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Geology
Published

Turkey's next quake: Research shows where, how bad -- but not 'when'      (via sciencedaily.com)     Original source 

Using remote sensing, geophysicists have documented the massive Feb. 6 quake that killed more than 50,000 people in Eastern Turkey and toppled more than 100,000 buildings. Alarmingly, researchers found that a section of the fault remains unbroken and locked -- a sign that the plates there may, when friction intensifies, generate another magnitude 6.8 earthquake when it finally gives way.