Coherent oscillation between phonons and magnons
Two different waves with the same frequency and wavelengths can be coupled, so that the amplitude alternates periodically between the two to form a phenomenon known as a coherent beating oscillation. The process can be observed often with a coupled p.....»»
Models provide new insights into relationship between Asia-Pacific upper-tropospheric temperatures and precipitation
Pacific Oscillation (APO) is a recently identified atmospheric teleconnection pattern in the Asia-Pacific sector characterized by a seesaw vibration of upper-tropospheric temperatures between Asia and the North Pacific. Teleconnections are links betw.....»»
Researchers reveal how a key weather system in Northeast China is modulated by El Niño
Southern Oscillation (ENSO) is a recurring climate pattern involving changes in the temperature of waters in the central and eastern tropical Pacific Ocean......»»
Researchers achieve coherent control of two-dimensional material solid-state spin defects
A team led by Prof. Guo Guangcan, with the collaborative efforts from Wigner Research Centre for Physics, revealed a new approach to discovering a new spin defect with an excellent probability of 85% and achieved coherent control of an ultrabright si.....»»
Phonons can be chiral: Study claims to settle the debate
Findings published in Nature settle the dispute: phonons can be chiral. This fundamental concept, discovered using circular X-ray light, sees phonons twisting like a corkscrew through quartz......»»
Order in chaos: Atmosphere"s Antarctic oscillation has natural cycle, discover researchers
Climate scientists at Rice University have discovered an "internally generated periodicity"—a natural cycle that repeats every 150 days—in the north-south oscillation of atmospheric pressure patterns that drive the movement of the Southern Hemisp.....»»
Symmetry breaking by ultrashort light pulses opens new quantum pathways for coherent phonons
Atoms in a crystal form a regular lattice, in which they can move over small distances from their equilibrium positions. Such phonon excitations are represented by quantum states. A superposition of phonon states defines a so-called phonon wavepacket.....»»
A highly performing device for polariton-based coherent microwave emission and amplification
When light strongly interacts with matter, it can produce unique quasi-particles called polaritons, which are half light and half matter. In recent decades, physicists explored the realization of polaritons in optical cavities and their value for the.....»»
El Niño–Southern Oscillation correlates well with following-summer cloud-to-ground lightning in China
Large-scale circulation anomalies are a key factor in the transportation of water vapor and changes in climate. For tropical and subtropical regions, an atmospheric circulation field not only determines the characteristics of the weather situation bu.....»»
A model system of topological superconductivity mediated by skyrmionic magnons
Topological superconductors are superconducting materials with unique characteristics, including the appearance of so-called in-gap Majorana states. These bound states can serve as qubits, making topological superconductors particularly promising for.....»»
The dynamics of "hotspot forming" high-energy quasiparticles in a superconducting nanowire
Energetic quasiparticles possess a collection of quantum characteristics that operate in a particle-like way in superconducting nanostructures, and they can undergo relaxation by involving many cascaded interactions between electrons, phonons and Coo.....»»
Researchers explore effects of fully relativistic condition on electron cyclotron maser emission
Radio emission, carrying a wealth of information, is critical for understanding the physical process of various outbursts. The electron cyclotron maser emission (ECME) plays an important role as a coherent radiation mechanism in explaining radio emis.....»»
Controlling turbulent heat transport by manipulating coherent structures
This topic is reviewed by Prof. Ke-Qing Xia (Southern University of Science and Technology, Shenzhen, China) and his collaborators, mainly based on their research work over the past ten years......»»
China seeks to replicate its 5G success story in the 6G era
In order to gain an early advantage in 6G development, China's Future Mobile Communications Forum and Purple Mountain Lab held the 2023 Global 6G Technology Conference in Nanjing on March 23, focusing on finding a coherent direction before 6G technol.....»»
Imaging through random media using coherent averaging
A recent study affiliated with UNIST has introduced an effective method of restoring images distorted by fog. According to the research team, their method can also provide a breakthrough by exploiting the random fluctuations for diffraction-limited i.....»»
Coherent phonon-induced gigahertz optical birefringence realized in strontium titanate
Using ultrafast time-resolved pump detection technology, researchers led by Prof. Sheng Zhigao from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences have realized the gigahertz (GHz) frequency birefringence modulati.....»»
Researchers observe solar filament formation caused by oscillation magnetic reconnection
Researchers led by Yan Xiaoli from the Yunnan Observatories of the Chinese Academy of Sciences, in collaboration with Sun Xia and Liang Hongfei from Yunnan Normal University, have clearly observed the formation of an intermediate solar filament cause.....»»
Scientists discover new form of oscillations in single filament driven by two-sided-loop jet
Researchers led by Prof. Shen Yuandeng and his student Tan Song from the Yunnan Observatories of the Chinese Academy of Sciences (CAS) have discovered new form of oscillation in a single filament driven by a two-sided-loop jet......»»
Tapered optical fiber addresses challenge posed by Brillouin scattering
When optical beams, consisting of photons, travel through fibers, they cause vibrations that generate acoustic waves, consisting of phonons. The phenomenon, called Brillouin scattering, has been harnessed by researchers to optomechanically "couple" a.....»»
Chiral phonons create spin current without needing magnetic materials
Researchers from North Carolina State University and the University of North Carolina at Chapel Hill used chiral phonons to convert wasted heat into spin information—without needing magnetic materials. The finding could lead to new classes of less.....»»
Using diamonds to generate ultrashort THz pulses
The advent of intense ultrashort coherent light pulses has revolutionized the spectroscopy field. They allow easy observation of various nonlinear optical effects and facilitate the characterization of materials with nonlinear optical spectroscopy. A.....»»