Atomic vibrations inside a conducting material could coax electrons to move in coordinated groups. Now researchers have observed this predicted effect, which could be harnessed for electron-based quantum optics and other emerging quantum technologies.
physics.aps.org
Atomic-scale measurements show that vibrational excitations can cause electrons to move in bunches.
One way to detect dark matter particles is to levitate a nanoscale object in vacuum and watch for a microscopic recoils. Now a research team has boosted the sensitivity of this approach by six orders of magnitude.
Researchers have created a random-number generator that uses a Bell test to upgrade an imperfectly random input into certifiable randomness. The new generator works on a single platform without making any assumptions about the inner workings of its hardware.
So many time steps are often needed to simulate a dynamical system’s final state that the computation becomes infeasible. Now researchers have used a machine-learning approach to extend the time steps in atomic-scale simulations by an order of magnitude.
Various observational limits on neutrino masses appear to conflict. A new theory says this tension could be relieved if neutrinos decay into long-lived massless “Beyond the Standard Model” particles. Evidence of such BSMs might be detectable in future galaxy surveys.
Cells afflicted by cancer are identified and destroyed by natural killer cells (NKCs). Now researchers have tracked the dynamics of NKCs using high-resolution microscopy. Their method of distinguishing the behavior of cancerous cells from that of healthy ones could lead to more effective therapies.
The roiling turbulence outside a black hole’s event horizon expels plasma in the form of vigorous jets and milder winds. Now astronomers have detected for the first time the wind that emanates from our own galaxy’s black hole.
Researchers have shown that all acoustic metamaterials face a previously unrecognized constraint: Boosting scattering in one frequency range unavoidably reduces it elsewhere. The discovery could lead to better noise barriers and acoustic cloaks.
A new measurement has determined, with a precision 100 times better than previous measurements, that the splitting of two “hyperfine” ground states of antihydrogen is the same as that seen in hydrogen. Matter and antimatter continue to look like mirror images of each other.
When two polymers are mixed in water and their concentration is high enough, droplets containing one or both species form and can remain stable for hours or days. Now researchers have developed a model for this counterintuitive and biologically relevant behavior.
Researchers use a quantum Bell test to generate certifiably random numbers, key ingredients for secure network communications.
Astronomers may have found a long-sought wind from Sagittarius A*, offering a glimpse into how typical supermassive black holes shape their environment.
Sound wave scattering can be increased in one frequency range only by reducing scattering in another range, according to experiments—a discovery relevant for acoustic engineering.
A 100-fold improvement in a key antihydrogen measurement strengthens tests of matter–antimatter symmetry, entering a regime sensitive to the antiproton’s internal structure.
