Articles tagged with Quantum Mechanics
Researchers have discovered a phenomenon related to the invar effect, enabling paramagnetic alloys to maintain mechanical stability at high temperatures. This breakthrough discovery promises to advance the design of high-temperature alloys with exceptional properties.
Researchers at the University of Vienna have successfully measured the smallest gravitational force yet by using a ladybug-sized mass. The team, led by Markus Aspelmeyer and Tobias Westphal, has picked up on an idea from Henry Cavendish's 18th-century experiment to measure gravitational forces with increasing accuracy.
Researchers successfully connected two crucial equations, bridging relativity and quantum mechanics. Prof. Chen's work introduces bold ideas to solve previously unsolved equations.
A Swansea University scientist's research explores how geometrical characteristics affect physical theories, revealing the need for contextual understanding in quantum mechanics. The study determines the structural properties that make a theory prone to contextuality.
Researchers developed a concept for a new storage medium based on antiferromagnetic materials, which can store binary values (0 or 1) through controlled manipulation of domain walls. The proposed method could potentially replace conventional ferromagnetic systems with faster and more energy-efficient data processing.
Researchers have developed a novel spectroscopy technique to measure the wave properties of molecular vibrations, achieving resolution capacity 10,000 times higher than previous methods. The experiment confirms quantum theory's prediction regarding atomic nuclei behavior with high accuracy.
Researchers at Radboud University create a network of single atoms that mimic brain-like behavior and adapt to external stimuli. They plan to scale up the system and explore new materials to build self-learning computing devices.
A team of physicists from the University of Trento has developed a method to compute changes in protein shape and trajectory using quantum computers. This technology has implications for understanding neurodegenerative processes and developing new treatments.
Researchers at University of California - Santa Barbara have created a new way to detect dark ions using laser-cooled radium molecules. This breakthrough allows for precise measurements of ion motional frequency and mass, enabling sensitivity to time symmetry violations in quantum mechanics.
Physicists have developed a switchable qubit that can be tuned between a stable storage mode and a fast calculation mode, enabling the creation of powerful quantum computers. The new qubit technology allows for ultrafast spin manipulation, potentially reaching clock speeds comparable to conventional computers.
A new method of distance measurement has been developed by researchers at Paderborn University, achieving precision 10,000 times better than established methods. This breakthrough could significantly improve applications such as LIDAR and GPS.
Nicolas Cerf and Michael Jabbour identify a new form of quantum interference that occurs through time, using an optical amplifier to produce identical photons. This phenomenon challenges our classical understanding of space-based interference.
Researchers have developed a new theory for observing the quantum vacuum, which could lead to new insights into black hole behavior. By using sound particles and ultra-cold atoms, they created a two-dimensional cloud where sound waves become audible to an accelerated observer in a silent phonon vacuum.
Researchers have observed a one-way street for electrons in a nanomaterial, where conical intersections channel energy in a certain direction with high probability. This phenomenon has implications for the development of more efficient organic solar cell devices and potentially artificial eyes from nanostructures.
A new study suggests that colleges should offer introductory, multidisciplinary courses with few prerequisites to teach fundamental concepts in quantum information science and technology. This will allow students across disciplines to learn the core concepts together, preparing them for a growing industry with applications in various f...
Researchers at the University of Chicago have made significant breakthroughs in designing brain-like devices by predicting design rules for energy-efficient transition states. The study, published in npj Computational Materials, highlights the potential of oxide materials to mimic the behavior of neurons and synapses in the human brain.
Researchers at the University of Nottingham have successfully used inkjet printing to create novel electronic devices with useful properties. The study shows that combining advanced manufacturing techniques with quantum wave modeling enables the creation of customized structures with promising applications for optoelectronic devices, w...
The University of Luxembourg is pioneering the use of machine learning to identify potent drug candidates and accelerate pharmaceutical development. By combining quantum mechanics and large molecular datasets, researchers hope to overcome challenges in chemical discovery and create novel compounds with tailored properties.
A RUDN University physicist simplified the Einstein-Lovelock theory for black holes by presenting its geometry in a compact form with a limited number of terms, sufficient to describe observed values. This simplification could aid in studying black holes in theories with quantum corrections.
Researchers at the University of Copenhagen are developing two new centers using quantum simulators to help create tomorrow's pharmaceuticals. The centers will utilize customized algorithms to simulate complex biochemical processes, speeding up the discovery of effective medications.
Archana Kamal, a UMass Lowell physics professor and expert on quantum information technologies, will co-present a free TEDx talk on the next quantum revolution. The event features prominent women experts in various fields, including science, technology, education, and business.
A team of researchers discovered unexpected features in roaming reactions, enabling more accurate predictions about molecules in the atmosphere, including models of climate change and ozone depletion. The study provides new tools to understand reaction mechanisms in the atmosphere.
Scientists at Argonne National Laboratory and University of Chicago developed a quantum embedding theory to simulate complex materials, exceeding current methods' accuracy. The method was tested on classical and quantum computers, showing high accuracy and effectiveness.
Researchers create genuine time-dependent topological system using ultracold atoms in periodically-driven optical honeycomb lattices, exhibiting unique electronic properties and chiral edge modes. The system's non-trivial topological properties are rooted in the non-trivial winding of its quasienergy spectrum.
A Cornell team created a new imaging technique that enables real-time observation of critical spin fluctuations in two-dimensional magnets. By controlling these fluctuations, researchers can switch magnetism without using a magnetic field, potentially leading to the creation of more energy-efficient magnetic storage devices.
Researchers at University of Queensland have successfully verified a counterintuitive idea from quantum theory that ignorance of the whole does not necessarily imply ignorance of the parts. This finding has implications for the security of quantum-based encryption.
Igor Mazin creates a quantitative, material-dependent theory for exceptional resilience in Ising superconductors, inspiring new experimental studies and potential applications in quantum computing. Funding of $450,000 from the US Department of the Navy supports this research until April 2023.
A quantum physicist at the University of Sydney has invented a new type of error-correcting code for quantum computers that will free up more hardware to do useful calculations. This approach allows companies like Google and IBM to design better quantum microchips, enabling the development of large-scale quantum technology.
Researchers have developed a new technique that uses 3D-printed aspherical microlenses to overcome the limitations of traditional microscope objectives. This allows for ultra-long-working-distance spectroscopy, enabling researchers to study single nanometre-sized light emitters without the need for bulky microscopes.
Researchers discovered the minimal value of viscosity, governed by the Planck constant and proton-to-electron mass ratio, using an equation that relates it to these physical constants. This finding has practical implications for developing new fluids with low viscosity.
Scientists observed a surprising phenomenon where electrons were sometimes ejected from nuclei in two-thirds of cases, and sometimes reflected back. The findings provide a new approach for testing quantum mechanical theories of Compton scattering.
The study aims to develop a unique instrument to investigate microscopic properties of superconductors and understand the emergence of spontaneous magnetic fields. The researchers hope to fill the knowledge gap that hinders the development of new devices, including quantum computers.
A team of Skoltech scientists discovered reachability deficits in the widely adopted QAOA algorithm, limiting its ability to solve certain problems. The study found that QAOA's performance depends on the problem density, with high-density instances having optimal solutions that cannot be approximated with guaranteed success.
Recent advancements in quantum mechanical computation enable precise predictions of complex minerals' stability, elasticity, and transport properties. These calculations reveal new insights into the Earth's deep interior, including post-perovskite phase boundaries and potential hydrous compounds.
Theoretical physicists calculate the birth of baby universes 46 times, showing a link between gravity and soliton. The study uses the JT gravity model to demonstrate the unification of quantum mechanics and gravity.
Parametric oscillators can be made to resonate when driven by high and low frequencies, a discovery that could improve our understanding of nonlinear systems in various fields. This is achieved through the tuning of the high-frequency driving force to match the low frequency, causing the system to exhibit resonance.
Researchers at TU Wien successfully measured a novel quantum effect in neutron spin, demonstrating inertial effects. The experiment involved exposing neutrons to a rotating magnetic field, revealing the coupling between spin and rotation.
Researchers at ETH Zurich present theoretical and experimental work that provides a higher-level understanding of 'fragile topology' in topological insulators. The discovery could lead to new applications in acoustics, photonics, and beyond.
Researchers used quantum mechanical computations to study the thermal conductivity of postperovskite at lower mantle conditions. The study found a significant jump in thermal conductivity associated with phase transition, which affects heat flux across the core-mantle boundary.
A UNIGE physicist proposes altering the mathematical language of classical physics to allow for indeterminism and randomness, resolving contradictions with quantum physics. This shift would enable a more intuitive approach to understanding the world, closer to our everyday experience.
Physicists have created a detailed band structure map for iron selenide, exposing its electronic signature and shedding light on its complex behavior. The study aims to guide the development of new materials with amazing properties.
Researchers at Universitat Autonoma de Barcelona developed an optimal procedure to identify clusters of identically prepared quantum systems, solving the challenge of sorting quantum data. The new protocol outperforms classical strategies, particularly for large dimensional data.
Researchers at Yale University are developing new materials that can mimic neurons, compute with magnets, and calculate using quantum mechanics. The team used a precision measurement technique to create artificial crystals composed of elements from the periodic table.
A research team has found a way to overcome the limitations of graphene-based molecular devices, creating structures that are both electrically and mechanically stable at room temperature. The breakthrough, published in Nature Nanotechnology, uses a combination of covalent binding and large ۆ-conjugated head groups to achieve stability.
Researchers from Chalmers University of Technology have demonstrated a graphene-based detector that can detect faint cosmic signals with high sensitivity and large bandwidth. The device's low power requirements make it ideal for future space missions, enabling 3D imaging of the universe.
The quantum technology company Q-CTRL has secured a $15 million funding round led by Square Peg Capital, placing it among the top 10 global quantum start-ups. The investment will support major growth for the company and geographic expansion to include a new office in Los Angeles.
Researchers have built the world's smallest engine, a single calcium ion, which uses random fluctuations to generate vibrations and store energy in discrete units. This tiny motor has potential applications in recycling waste heat and improving energy efficiency in future technologies.
A team of Virginia Tech researchers has advanced quantum simulation by devising an algorithm that can more efficiently calculate the properties of molecules on a noisy quantum computer. The breakthrough enables simulating molecular properties, which can lead to advances in materials improvement and drug discovery.
Researchers at the University of Vienna successfully implemented a counterfactual communication protocol, where information travels from Bob to Alice while photons travel in the opposite direction. This innovation resolves two major drawbacks of previous implementations and contradicts a crucial premise of communication theory.
Researchers from NUS have developed a novel approach to confine heat within a small region of a metal ring, demonstrating the application of anti-parity-time symmetry to thermal diffusion. This breakthrough has significant implications for optimizing cooling systems and efficient heat removal in modern technologies.
A new machine learning approach enables researchers to encode quantum mechanical laws into neural nets, simulating molecular motion billions of times faster than conventional methods. This breakthrough advances research in fields like drug development, protein simulations, and reactive chemistry.
University of Copenhagen researchers create a nanomechanical router that emits quantum information carried by light particles, enabling the scaling up of quantum technology. The component's tiny size makes it promising for future applications, potentially achieving 'quantum supremacy' with tens of photons simultaneously.
University of Barcelona researchers have developed a new continuous version of Maxwell's demon in a single molecule system, enabling large amounts of work extraction through repeated measurements. The device can find the right moment to extract energy, with potential applications in biology and quantum systems.
Researchers at Kazan University have discovered that amorphous materials exhibit outstanding physical and mechanical properties, including strength, electric conductivity, and corrosion resistance. The study found that these materials can crystallize into a monocrystal or polycrystalline structure under different temperature conditions.
Researchers at Aalto University have successfully controlled energy losses and shifts in a high-quality superconducting resonator, allowing for increased dissipation rate on demand. This breakthrough has significant implications for the development of larger-scale quantum computers and innovative quantum technological devices.
The researchers created an artificial macroscopic crystal inspired by Japanese baskets, emulating the valley-Hall effect in quantum physics. This led to unexpected properties for acoustics, including incredible resistance against defects and curves.
Proteins exhibit surprising electrical conductivity when connected to electrodes via specific molecules, paving the way for sensitive chemical sensors. The study identifies six proteins capable of conductance, with two specific contacts resulting in highest conductivity.
A precise definition of a black hole's singularity proves elusive, with diverse definitions among physicists and different physical approaches to understanding the phenomenon.
A new scale of electronegativity has been developed, providing a more comprehensive and extensive definition that can predict the approximate charge distribution in different molecules and materials. The new definition averages the binding energy of valence electrons and offers an equation to describe the total energy of an atom.
Physicists from the University of Würzburg have successfully manipulated a molecule into two stable states by controlling its environment using an electrical field. This breakthrough could enable the creation of molecular switches for spintronics applications, a promising technology for future data processing.