Computers

New experiments using trapped one-dimensional gases -- atoms cooled to the coldest temperatures in the universe and confined so that they can only move in a line -- fit with the predictions of the recently developed theory of "generalized hydrodynamics." Quantum mechanics is necessary to describe the novel properties of these gases. Achieving a better understanding of how such … [Read more...] about Putting a new theory of many-particle quantum systems to the test: Experiments show that generalized hydrodynamics accurately simulates an out-of-equilibrium quantum system

While studying the behavior of electrons in iron-based superconducting materials, researchers at the University of Tokyo observed a strange signal relating to the way electrons are arranged. The signal implies a new arrangement of electrons the researchers call a nematicity wave, and they hope to collaborate with theoretical physicists to better understand it. The nematicity … [Read more...] about Surprise result for solid state physicists hints at unusual electron behavior

A new analysis suggests that, in order to boost freedoms and protect against overwhelming new waves of COVID-19, the pace at which restrictions to reduce spread are lifted must be directly tied to the pace of vaccination. Simon Bauer, Viola Priesemann, and colleagues of the Max Planck Institute for Dynamics and Self-Organization, Germany, present these findings in the … [Read more...] about Optimal lifting of COVID-19 restrictions would follow pace of vaccination, study suggests: High vaccination rate also needed to maximize freedoms and minimize new waves of infection

Quantum computers are advancing at a rapid pace and are already starting to push the limits of the world's largest supercomputers. Yet, these devices are extremely sensitive to external influences and thus prone to errors which can change the result of the computation. This is particularly challenging for quantum computations that are beyond the reach of our trusted classical … [Read more...] about Researchers find a way to check that quantum computers return accurate answers

For millions of people with epilepsy and movement disorders such as Parkinson's disease, electrical stimulation of the brain already is widening treatment possibilities. In the future, electrical stimulation may help people with psychiatric illness and direct brain injuries, such as stroke. However, studying how brain networks interact with each other is complicated. Brain … [Read more...] about New AI algorithm to improve brain stimulation devices to treat disease

Many electronic devices today are dependent on semiconductor logic circuits based on switches hard-wired to perform predefined logic functions. Physicists from the National University of Singapore (NUS), together with an international team of researchers, have developed a novel molecular memristor, or an electronic memory device, that has exceptional memory … [Read more...] about Brain-inspired memory device: Reconfigurable device can simplify semiconductor circuit design and enhance computational power and speed

Researchers at Case Western Reserve University have developed an online tool to help medical staff quickly determine which COVID-19 patients will need help breathing with a ventilator. The tool, developed through analysis of CT scans from nearly 900 COVID-19 patients diagnosed in 2020, was able to predict ventilator need with 84% accuracy. "That could be important for … [Read more...] about Researchers use artificial intelligence to predict which COVID-19 patients will need a ventilator to breathe

In an article published in the journal Patterns, scientists at the Icahn School of Medicine at Mount Sinai described the creation of a new, automated, artificial intelligence-based algorithm that can learn to read patient data from electronic health records. In a side-by-side comparison, they showed that their method, called Phe2vec (FEE-to-vek), accurately identified patients … [Read more...] about Scientists create a labor-saving automated method for studying electronic health records: Study suggests new method is as effective as manually-based ‘gold-standard’ at classifying a diagnosis

In a discovery published in the journal Nature, an international team of researchers has described a novel molecular device with exceptional computing prowess. Reminiscent of the plasticity of connections in the human brain, the device can be reconfigured on the fly for different computational tasks by simply changing applied voltages. Furthermore, like nerve cells can store … [Read more...] about New molecular device has unprecedented reconfigurability reminiscent of brain plasticity: Device can be reconfigured multiple times simply by changing applied voltage

Photons -- fundamental particles of light -- are carrying these words to your eyes via the light from your computer screen or phone. Photons play a key role in the next-generation quantum information technology, such as quantum computing and communications. A quantum emitter, capable of producing a single, pure photon, is the crux of such technology but has many issues that … [Read more...] about Quantum emitters: Beyond crystal clear to single-photon pure