Articles tagged with Quantum Dynamics
Dr. Wencai Liu, an associate professor at Texas A&M University, has been selected for the 2024 IUPAP Early Career Scientist Prize in Mathematical Physics. His research focuses on linear and nonlinear Schrodinger equations, contributing to our understanding of quantum mechanics and its applications.
The ELI ALPS facility provides state-of-the-art tools for studying ultrafast phenomena. The plasma and gas-based high-repetition-rate attosecond XUV beamlines at ELI ALPS enable researchers to advance multidisciplinary research in ultrafast phenomenon with enhanced signal-to-noise ratio.
Physicists at the University of Cologne have discovered that magnetic elementary excitations in BaCo2V2O8 crystals are bound by both attractive and repulsive interactions. The study found that repulsively bound states, which were unexpected due to their lower stability, can exist in these materials.
A groundbreaking study introduces a method for sorting vector structured beams with spin-multiplexed diffractive metasurfaces, promising significant advancements in optical communication and quantum computing. This technology enables precise control over complex light beams, opening new avenues for scientific exploration.
Researchers at Lancaster University and Radboud University Nijmegen have discovered a novel pathway to modulate and amplify spin waves at the nanoscale, paving the way for dissipation-free quantum information technologies. The study's findings could lead to the development of fast and energy-efficient computing devices.
Researchers at Harvard University have successfully demonstrated the survival of quantum coherence in a chemical reaction involving ultracold molecules. The team observed intricate quantum dynamics underlying the reaction process and outcome, revealing that quantum coherence was preserved within the nuclear spin degree of freedom throu...
A new study by the University of Exeter finds that China's growing use of emerging technologies in civilian and military domains has escalated its stakes as a threat and near-peer competitor to the US. Western states have responded with diplomatic efforts, bans, and restrictions to undermine China's power.
Researchers at Google Quantum AI successfully simulated magnetization in a 1D quantum magnet using superconducting qubits. The study confirms the Kardar-Parisi-Zhang (KPZ) universality class, which describes the scaling of spin-spin correlation functions.
A new technique has been developed to cool quantum simulators, allowing for more stable experiments and better insights into quantum effects. By splitting a Bose-Einstein condensate in a specific way, researchers can reduce temperature fluctuations and enhance the performance of quantum simulators.
The study reveals insights into topological materials by visualizing the motion of coupled pendula, reproducing behaviors of electrons in periodic systems. The researchers directly measure Bloch oscillations and Zener tunneling phenomena, previously impossible to observe in quantum systems.
Researchers demonstrate a way to amplify interactions between particles to overcome environmental noise, enabling the study of entanglement in larger systems. This breakthrough holds promise for practical applications in sensor technology and environmental monitoring.
Scientists directly visualize the neutral products of hydronium-hydroxide neutralization, observing two electron-transfer mechanisms and a proton-transfer channel. The study provides insights into quantum dynamics of this fundamental reaction.
Physicists at the University of Southampton successfully detect weak gravitational pull on microscopic particles using a new technique. The experiment, published in Science Advances, could pave the way to finding the elusive quantum gravity theory.
Scientists at Shanghai Institute of Microsystem and Information Technology enhance the photon-number-resolving capability of single-photon detectors by widening superconducting strips. This results in better dynamic range and fidelity, enabling true-photon-number resolution up to 10.
Researchers at Rice University have developed a new experimental technique that preserves quantum coherence in ultracold molecules for a significantly longer time. By using a specific wavelength of light, the 'magic trap' delays the onset of decoherence, allowing scientists to study fundamental questions about interacting quantum matter.
Researchers unveiled a two-dimensional Metal Organic Framework (MOF) that showcases negative thermal expansion and unique origami tessellation patterns. The MOF's deformable net topology enables origami-like movement in response to temperature changes.
Researchers at MIT recreate a 'quantum bomb tester' using bouncing droplets, finding that the droplet's classical dynamics give rise to similar statistical behavior as predicted by quantum mechanics. The study bridges the gap between two realities, offering insight into quantum behavior from a local realist perspective.
The development of a new photonic technique enables the precise control of photonic angular momentum, allowing for the efficient recognition and real-time control of total angular momentum modes. The technique, which involves the symmetrical cascading of two units, has been experimentally demonstrated to recognize up to 42 individual T...
Researchers at Brown University have made significant breakthroughs in understanding quantum spin liquids by studying the effects of disorder on these exotic materials. The study reveals that disorder does not destroy or mimic the quantum liquid state but rather significantly alters it.
A novel inequality defines the limit of heat current flowing into a quantum system as its size increases, showing a cubic relationship with particle count. The study identifies superradiance as the most efficient mechanism for achieving this fundamental limit.
The study reveals a quantum switching mechanism of LHCII, which regulates energy transfer quantum channel in response to lateral pressure and conformational change. This mechanism enables high efficiency in photosynthesis and balanced photoprotection.
Researchers at Duke University used a quantum computer to measure the geometric phase in light-absorbing molecules, which puts limitations on molecular transformations. This breakthrough allows for direct measurement of a long-standing fundamental question in chemistry, critical to processes like photosynthesis and vision.
A new study by Prof. Yossi Paltiel and colleagues reveals that nuclear spin significantly affects oxygen dynamics in chiral environments, particularly in transport. This finding challenges long-held assumptions and opens up possibilities for advancements in biotechnology and quantum biology.
Researchers from FAMU-FSU College of Engineering validated the self-consistent two-way model describing vortex ring motion in superfluid helium. The study provides crucial evidence supporting the recent theoretical model of quantized vortices, resolving long-standing questions and enhancing understanding of vortex dynamics.
Researchers at EPFL have found a way to teach quantum computers to learn and process information using principles inspired by quantum mechanics. By training quantum neural networks (QNNs) on a few simple examples called 'product states', the computer can effectively grasp complex dynamics of entangled quantum systems.
A team at the University of Washington has made a breakthrough in quantum computing by detecting signatures of 'fractional quantum anomalous Hall' (FQAH) states in semiconductor materials. This discovery marks a significant step towards building stable qubits and potentially developing fault-tolerant quantum computers.
Researchers at LMU developed a metasurface that enables strong coupling effects between light and TMDCs, generating hybridized photonic and electronic states called polaritons. This platform offers new possibilities for research into polaritonic applications, including controllable low-threshold semiconductor lasers and quantum computing.
New experiments with ultra-cold atomic gases show that quantum systems composed of many particles change over time following a sudden energy influx. The findings reveal a universality in the behavior of these systems, shedding light on how they evolve and interact.
Physicists at FAU have successfully measured and controlled electron release from metals in the attosecond range using a special strategy. This achievement could lead to new quantum-mechanical insights and enable electronic circuits that are a million times faster than current technology.
An international research team has confirmed for the first time that mutual information in a many-body quantum system scales with surface area rather than volume. The experiment used ultracold atoms and a special tomography technique to measure the shared information.
An international team has discovered how electrons can move rapidly on a quantum surface driven by external forces, visualizing the motion of electrons on liquid helium for the first time. The research revealed unusual oscillations with varying frequencies and a combination of quantum and classical dynamics.
The new technology enables compact, low-power, fast, and energy-efficient devices for fibre-optical communications, sensors, and future quantum computers. This breakthrough could lead to advancements in applications such as 3D imaging for autonomous vehicles and photonic-assisted computing.
Researchers at UNIGE have designed a quantum material that can be controlled by curving space, allowing for ultra-fast electromagnetic signal processing and potential applications in high-speed communication systems. The material's unique properties enable the creation of new sensors and potentially unlock new avenues in exploration.
Researchers developed an active model to describe systems of many active particles, finding similarities with the Schrödinger equation and analogies to quantum effects such as tunneling and dark matter.
Researchers at Korea Advanced Institute of Science and Technology used optical traps to throw chilled rubidium atoms over a distance of 4.2 micrometers, achieving 94% success rate. The technology could enable dynamic quantum computing and study single-atom collisions.
A new mathematical theory developed by scientists at Rice University and Oxford University can predict the nature of motions in complex quantum systems. The theory applies to any sufficiently complex quantum system and may give insights into building better quantum computers, designing solar cells, or improving battery performance.
Philip J.W. Moll's ERC Consolidator Grant aims to engineer electronic interactions within a single material, exploring new paradigms for interfaces between two regions of different electronic behaviors, such as superconductivity and magnetism.
Physicists at MIT and Caltech developed a new benchmarking protocol to characterize the fidelity of quantum analog simulators, enabling high precision characterization. The protocol analyzes random fluctuations in atomic-scale systems, revealing universal patterns that can be used to gauge the accuracy of these devices.
Scientists successfully record phase distribution of electrons, unveiling detailed structure of its complex wavefunction. The method uses attosecond laser pulse to visualize electron wavefunction in a gas.
Scientists successfully created a light source that produced two entangled light beams using rubidium atoms. The entanglement was achieved by adding new detection steps to measure the quantum correlations in the amplitudes and phases of the fields generated, enabling applications in quantum computing, encryption, and metrology.
Researchers use novel interferometric technique to measure time delay between H2 and D2 isotopes, finding phase shift of nearly 3 attoseconds caused by nuclear motion. The study uses high harmonic generation and advanced theoretical modeling to validate the method.
Researchers at Griffith University develop novel technique to measure ultrafast processes with unprecedented time resolution, measuring time delay between H2 and D2 molecular hydrogen isotopes with zeptosecond precision. The study has implications for understanding HHG radiation dynamics.
Researchers at Tohoku University have discovered a new type of energy-band echo associated with the ultrafast dynamics of optically driven quasiparticles in crystalline solids. This discovery enables all-optical momentum-resolved spectroscopy even in strongly correlated systems, revolutionizing quantum technology.
A team led by Prof. Alan Tennant and Dr Allen Scheie gain deeper insights into the interactions between spins in KCuF3, a simple model material for Heisenberg quantum spin chain. They use neutron scattering to study spatial and temporal evolution of spins.
Researchers demonstrate the creation of a self-oscillating pump in a topological dissipative atom-cavity system, transporting atoms without external periodic driving. This discovery combines quantum many-body physics and open quantum systems, offering insights into exotic states of matter.
A new study proposes a mathematical tool to understand the fractal structure of quark-gluon plasma, which is formed in high-energy collisions. The fractal structure explains some phenomena seen in these collisions, including particle momentum distributions that follow Tsallis statistics.
Researchers at Lancaster University have created a camera-like device that captures images of mini whirlpools in quantum liquids for the first time. The camera uses particle-like disturbances to take pictures of collections of vortices, which are unpredictable and form in specific patterns above a vibrating wire.
A large-scale collaboration has uncovered how charge order and superconductivity interact at the nanoscale, enabling new insights into high-temperature superconductor dynamics. The study aims to develop a framework for understanding how these materials emerge, with potential applications in energy and telecommunication systems.
A team of scientists used a quantum simulator to study the behavior of a complex quantum system, finding that it exhibits characteristics similar to fluid dynamics. The research also showed that this phenomenon can be observed in the flights of bees, as well as in unusual stock market movements.
Researchers at TU Wien and Hiroshima University have corrected a long-standing flaw in the double-slit experiment, proving that individual particles can move along multiple paths at once. By detecting a single neutron, they were able to determine its presence on each path with high accuracy.
Researchers studied ultrafast control of single-photon emitters in hexagonal boron nitride using laser pulses. They developed a comprehensive understanding of the dynamics within colour centres, which can help avoid perturbations in future applications.
AV3Sb5 kagome metals exhibit unusual quantum phenomena such as high-temperature superconductivity. Researchers identified four Van Hove singularities near the Fermi level, which enhance correlation effects and lead to competing orders.
Researchers at University of Innsbruck and ETH Zurich propose a new concept for a high-precision quantum sensor using microcavities and levitated nanoparticles. By exploiting fast unstable dynamics, they demonstrate mechanical squeezing reducing motional fluctuations below zero-point motion.
Researchers developed a novel framework to characterize weakly chaotic dynamics in complex systems with many constituent parts. By investigating Lyapunov spectrum scaling, they identified emerging quasi-conserved quantities that shed light on quantum computation and physical models.
Researchers investigated the shortest possible time scale of optoelectronic phenomena and found that it cannot be increased beyond one petahertz. The experiments used ultra-short laser pulses to create free charge carriers in materials, which were then moved by a second pulse to generate an electric current.
Researchers developed TDAP method for investigating precise ultrafast processes in matter, providing robust dynamic simulations based on quantum mechanical principles. The approach has been applied to strong field physics and photocatalysis, demonstrating effective treatment of ultrafast quantum dynamical processes.
A research team at POSTECH has developed a weak-value amplification method to achieve quantum metrology precision without using entangled resources. This breakthrough enables the practical use of quantum metrology by verifying that entanglement is not an absolute requirement for reaching the Heisenberg limit.
A team led by Prof. PAN Jianwei from the University of Science and Technology of China has successfully measured second sound attenuation in a controlled experiment using ultra-cold lithium-6, verifying the dynamic scaling theory and paving the way for further research on quantum critical regions.
Rice University physicists have developed a technique to engineer Rydberg states of ultracold strontium atoms, creating 'synthetic dimensions' that simulate real materials. This breakthrough enables the creation of interacting particles in a controlled environment, paving the way for new physics and material properties.
Researchers created a stable surface with exceptional points, demonstrating perfect light absorption in a coherent system. The discovery enables the investigation of new physics and potential applications for better sensors and novel ways of controlling light-matter interaction.