Physics

Researchers build transistor-like gate for quantum information processing -- with qudits

Researchers have built what could be a quantum version of a transistor -- with qudits.

Chaos theory provides a way for determining how pollutants travel

Floating air particles following disasters and other largescale geological events can have a lasting impact on life on Earth. Volcanic ash can be projected up to the stratosphere and halt air traffic by lingering in the atmosphere for months. Particles from industrial accidents have the potential to travel full hemispheres before falling to the ground. A new model drawing on chaos theory, and published in this week's Chaos, from AIP Publishing, looks to help predict how particles move in such events with an eye toward potential applications for geoengineering to combat climate change.

Limitation exposed in promising quantum computing material

Physicists have theorized that a new type of material, called a three-dimensional (3-D) topological insulator (TI), could be a candidate to create qubits for quantum computing due to its special properties. A study found that when the TI's insulating layers are as thin as 16 quintuple atomic layers across, the top and bottom metallic surfaces begin to destroy their metallic properties.

Upgrade of a research IceCube

The IceCube Neutrino Observatory in Antarctica is about to get a significant upgrade. This huge detector consists of 5,160 sensors embedded in a 1x1x1 km volume of glacial ice deep beneath the geographic South Pole. The purpose of this huge installation is to detect neutrinos, the "ghost particles" of the Universe. The IceCube Upgrade will add more than 700 new and enhanced optical sensors in the deepest, purest ice, greatly improving the observatory's ability to measure low-energy neutrinos produced in the Earth's atmosphere.

The interlayers help perovskite crystallisation for high-performance light-emitting diodes

Scientists have shown how to achieve efficient perovskite light-emitting diodes (LEDs). They provide guidelines on fabricating high-quality perovskite light emitters, and consequently high-efficiency perovskite LEDs.

Breakthrough material could lead to cheaper, more widespread solar panels and electronics

Physics research groups have generated free electrons from organic semiconductors when combined with a single atomic layer of molybdenum disulfide, a recently discovered two-dimensional semiconductor.

Artificial intelligence designs metamaterials used in the invisibility cloak

Metamaterials are artificial materials engineered to have properties not found in naturally occurring materials, and they are best known as materials for invisibility cloaks often featured in sci-fi novels or games. By precisely designing artificial atoms smaller than the wavelength of light, and by controlling the polarization and spin of light, researchers achieve new optical properties that are not found in nature. However, the current process requires much trial and error to find the right material.

New 'Majorana photons' identified

Scientists have discovered a new super class of photons dubbed 'Majorana photons.' They could lead to enhanced information on quantum-level transition and imaging of the brain and its working.

Physicists find first possible 3D quantum spin liquid

There's no known way to prove a three-dimensional 'quantum spin liquid' exists, so physicists did the next best thing: They showed their crystals of cerium zirconium pyrochlore had the right stuff to qualify as the first possible 3D version of the long-sought state of matter.

Quantum logic clock returns to top performance

The quantum logic clock -- perhaps best known for showing you age faster if you stand on a stool -- has climbed back to the leading performance echelons of the world's experimental atomic clocks.

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