Physics


Energy Process Reconnection Scales Cascade Amitava Bhattacharjee
- Explaining a Solar Mystery – Princeton Researchers Have Discovered a Previously Hidden Heating Process TOPICS: Breakthrough in identifying the puzzling cause.  Researchers discovered a previously unknown heating mechanism that explains why the "solar corona," the atmosphere surrounding the Sun, is much hotter than the solar surface that emits it. The finding at the Princeton Plasma Physics Laboratory (PPPL) of the U.S. Department of Energy (DOE) has the potential to help resolve ... [Read More]


Emil Vi Devices Magnon Phase Materials Magnetic Materials
- Unlocking the Potential of Magnetic Materials – A New Optical Method To Verify Topological Phases Topological phases are not limited to electronic systems and can also exist in magnetic materials characterized by magnetic waves, known as magnons. While scientists have developed methods for producing and measuring magnon currents, they have yet to directly observe a magnon topological phase. A magnon travels through a magnetic material by disturbing its magnetic order, similar to how a ... [Read More]


Quantum Qubits Problems Computers Microsoft Quantum Computers
- The IonQ Forte quantum system is roughly the same size as a standard data center cabinet. (IonQ Photo) Do full-fledged quantum computers already exist, or will it be a decade before they come into being? Will they have to be the size of a football field? A data center cabinet? A microwave oven? It seems as if the more you talk to computer scientists involved in the quantum computing quest, the less certain the answers become. It's the flip side of the classic case of Schrödinger's Cat , ... [Read More]

Source: geekwire.com

Phase X Ray Time Imaging Laser Transition
- Using light to create transient phases in quantum materials is a novel method for engineering new properties like superconductivity or nanoscale topological defects, however, visualizing the growth of these phases in solids is challenging due to the wide range of spatial and time scales involved in the process. Scientists have explained light-induced phase transitions in quantum materials through nanoscale dynamics, but producing real space images has proved difficult, leading to no one having ... [Read More]


Rabi Oscillations U State Rabi Oscillations Sigma Dissociation
- Over eighty years ago, Rabi oscillations were proposed to describe the strong coupling and population transfer in a two-level quantum system exposed to an oscillatory driving field. As compared to atoms, molecules have an extra degree of vibration, which adds an additional knob to the Rabi oscillations in light-molecule interactions. However, how such a laser-driven Rabi oscillation during the stretching of molecular bonds determines the kinetic energy release (KER) spectrum of dissociative ... [Read More]

Source: phys.org

2d Heterostructures Perovskites Properties Applications Perovskite
- Van der Waals heterostructures integrated from various two-dimensional (2D) layered materials provide fundamental building blocks for optoelectronic devices with novel functionalities, such as photovoltaic solar cells, light emitting diodes (LEDs) and photodetectors. Two-dimensional and quasi-two-dimensional perovskites (abbreviated as 2D perovskites hereafter) exhibit unique properties, such as large exciton binding energy, high photoluminescence quantum efficiency, large oscillator strengths ... [Read More]

Source: phys.org

Thz Pulse Pulses Fs Input Frequency
- 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. Additionally, they provide a means for strong selective excitation of materials and optical manipulation of material structure, and enhance properties such as optical-field-induced ferroelectricity, and superconductivity. They have also created the ... [Read More]

Source: phys.org

Pulses Laser Light Frequency Source Scheme
- When molecules form from many atoms, the atoms can combine in different ways. Two forms of the same molecule can have the same composition but have different arrangements of atoms, giving rise to isomers. Some isomers may have structures that are mirror images of each other. Such molecules are called chiral molecules. Scientists are interested in studying such molecules, for example, penicillin, because one arrangement can be a lifesaver while the other could be fatal. Researchers shine ... [Read More]

Source: phys.org

Andrzej Dragan Time Observers Relativity Space Quantum
- TOPICS: How would our world be perceived by observers moving faster than light in a vacuum? According to theorists from Warsaw and Oxford universities, such a view would differ from what we encounter daily, with the presence of not only spontaneous phenomena but also particles traveling multiple paths simultaneously. Futhermore, the very concept of time would be completely transformed — a superluminal world would have to be characterized with three time dimensions and one spatial ... [Read More]


Quantum Quantum Light Light Photons Physics Atoms
- Quantum light would let us peer into atoms like never before, paving a way to solve longstanding mysteries in materials physics. A mind-boggling new type of "quantum light" might allow scientists to peer inside atoms and control some of the bizarre powers of light particles, or photons, at these tiny quantum scales, reports a new study. Though this form of quantum light remains theoretical at this point, scientists believe it may soon be experimentally demonstrated with existing equipment, ... [Read More]

Source: vice.com

Ions Quantum Quantum Information Tracy Northup Ben Lanyon Systems
- Trapped ions have previously only been entangled in one and the same laboratory. Now, teams have entangled two ions over a distance of 230 meters. The nodes of this network were housed in two labs at the Campus Technik to the west of Innsbruck, Austria. The experiment shows that trapped ions are a promising platform for future quantum networks that span cities and eventually continents. Trapped ions are one of the leading systems to build quantum computers and other quantum technologies. To ... [Read More]


Transmission Wellman Center Wavelength Fiber Mmf Matrix
- Researchers at the Wellman Center for Photomedicine have demonstrated that wavelength-dependent changes in the spatial distribution of light transmitted through a multimode optical fiber are not random but highly predictable. They developed a dispersion model and computational methods for efficient measurement of the transmission of light through the fiber across a spectrum of wavelengths. Controlling the spatial transmission of light with different wavelengths through multimode fiber holds ... [Read More]

Source: phys.org

Phi Mesons Force Particles Fields Spin Quarks
- The strong force is an enigma. Through gluons , it binds together quarks, one of the two basic building blocks of matter, into the protons and neutrons at the center of every atom. True to its name, it is the strongest of the four known fundamental forces, but it only exerts its might across subatomic distances. Despite its power and importance, the strong force is the hardest force to observe in action, and its behavior is nearly impossible to mathematically predict. Now a group of scientists ... [Read More]


Interaction Dmitry Budker Model Setup Interactions Z
- In the search for new forces and interactions beyond the Standard Model, an international team of researchers has now taken a good step forward. The researchers are using an amplification technique based on nuclear magnetic resonance. They use their experimental setup to study a particular exotic interaction between spins: a parity-violating interaction mediated by a new hypothetical exchange particle, called a Z' boson, which exists in addition to the Z boson mediating the weak interaction in ... [Read More]


Universe Galaxies Matter Energy Bang Big Bang
- From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger. "The first thing we know about the universe is that it's really, really big," says cosmologist Michael Turner, who has been contemplating this reality for more than four decades now. "And because the universe is so big," he says, "it's often beyond the reach of our instruments, and of our ideas." Certainly our current understanding of the cosmic story leaves some huge ... [Read More]


Neutrinos Protons Neutrino Hydrogen Mcfarland Atoms
- Scientists have discovered a new way to investigate the structure of protons using neutrinos, known as 'ghost particles.' Neutrinos are one of the most abundant particles in our universe, but they are notoriously difficult to detect and study: they don't have an electrical charge and have nearly no mass. They are often referred to as "ghost particles" because they rarely interact with atoms. But because they are so abundant, they play a large role in helping scientists answer fundamental ... [Read More]