Articles tagged with Quantum Mechanics
A UC Santa Barbara professor's lab group has developed a way to use magnetic frustration to engineer unconventional magnetic states. These states have potential relevance for quantum technologies, including long-range entanglement of spins and ferroic responses.
A nanostructure composed of silver and an atomically thin semiconductor layer can be turned into an ultrafast switching mirror device, displaying properties of both light and matter. This discovery could lead to dramatically increased information transmission rates in optical data processing.
Researchers found that photons and atoms don't always rapidly reach thermal equilibrium as expected. Instead, they can settle at different temperatures for extended periods, allowing for the preservation of quantum behavior. This prethermal state can last long enough to matter for neutral-atom quantum computers.
A research team at the University of Vienna demonstrates that massive metallic nanoparticles follow quantum mechanics rules, creating a 'Schrödinger's cat state' and breaking existing records for macroscopic scale tests. The experiment shows that even large objects can exhibit wave-like behavior.
Researchers have shown that quantum collapse models, which challenge standard quantum theory, imply a fundamental limit on clock precision due to tiny intrinsic uncertainty in time. This means modern timekeeping technologies are entirely unaffected by such uncertainty.
A research team at Osaka Metropolitan University successfully realized a new type of Kondo necklace with increased localized spin size, demonstrating a clear phase transition to magnetic order. The study shows that the Kondo interaction promotes magnetism when the localized spin is larger than 1/2.
Dr. Marlan Scully traces the journey of quantum mechanics, from its quirky beginnings to its role in solving science's toughest challenges, including quantum computing, cryptography, and gravitational wave detection.
A new framework models pointing error in QKD optical wireless systems, clarifying its role in degrading secure key generation. The study found that increased beam waist and asymmetrical beam misalignment degrade performance, while increasing receiver aperture size and average photon numbers can improve it.
Researchers at Tokyo University of Science demonstrate matter-wave diffraction in a short-lived electron-positron atom, marking a major advancement in fundamental physics. The findings pave the way for new research using positronium and could enable sensitive tests of gravity.
Physicists used a quantum simulator to study the interaction of electrons in a material with a pseudogap state. They found that subtle magnetic patterns shape this mysterious phase of matter, which appears above the temperature at which it becomes superconducting.
Scientists at SwissFEL have developed a technique known as X-ray four-wave mixing, allowing them to access coherences in matter for the first time. This breakthrough has the potential to illuminate how quantum information is stored and lost, ultimately aiding the design of more error-tolerant quantum devices.
A team at Japan's National Institutes for Quantum Science and Technology has published a roadmap outlining the societal payoff of quantum technologies in life science. The study highlights three pillars: cell-scale diamond sensors, practical hyperpolarized MRI, and quantum biology, which enable earlier disease detection, faster drug de...
Researchers investigated energy shifts in 173Yb+ ions, combining experiment and theory to uncover the nucleus's magnetic field distribution. The study provides an experimental foundation for precise clocks and fundamental physics tests using complex ions like Yb+.
A new study reveals that crystal dislocations can serve as powerful building blocks for quantum interconnects, enabling the creation of stable and coherent qubits. The researchers showed that nitrogen-vacancy centers in diamond can be attracted to dislocations and retain their quantum properties when positioned near these line defects.
Researchers have discovered a new quantum state of matter that combines quantum criticality and electronic topology, paving the way for advancements in computing, sensing, and materials science. This hybrid state has potential applications in real-world technologies due to its durable and highly sensitive qualities.
Researchers used a quantum device to simulate a vibrating molecule, tracking how energy moves within it. They found that vibrations can actively steer energy flow in unexpected ways, speeding up transfer and opening new pathways.
Scientists have found a way to describe topological states in materials where the particle picture breaks down. The discovery sheds light on a new type of behavior, exhibiting spontaneous Hall effect and quantum-critical fluctuations. This finding opens up possibilities for storing quantum information and developing novel sensors.
Engineers have developed a device that can generate surface acoustic wave phonon lasers, enabling the creation of sophisticated chips in cellphones and other wireless devices. This technology could lead to smaller, higher-performance, and lower-power wireless devices like cell phones.
The American Physical Society's Global Physics Summit will convene over 14,000 physicists worldwide for groundbreaking research presentations. The event will feature both in-person and online experiences, including scientific sessions, exhibits, and networking events.
Researchers at Institute of Science Tokyo have discovered a stable superfluid that inherently hosts singularities known as exceptional points. The study reveals how dissipation can stabilize this unique superfluid phase, which features a finite order parameter and emerges deep inside a strongly interacting phase.
A team of scientists found alternative explanations for data in topological quantum computing, challenging the field's progress. They proposed changes to increase experimental result reliability by sharing more data and discussing alternative explanations.
Researchers at Texas A&M University are building highly sensitive detectors to explore dark matter and energy. The team's work builds on previous breakthroughs in detecting low-mass particles, and they aim to find ways to amplify signals that were previously buried in noise.
The CHSN01 jacket material has achieved an average yield strength of 1560 MPa at 4.2 K, setting a new benchmark in cryogenic steel properties. This breakthrough demonstrates exceptional mechanical properties, non-magnetic nature, and high-strength performance under extreme conditions.
Researchers have discovered a linear relationship between reactivity and the reciprocal of uranium concentration in thermal-spectrum molten salt reactors. This finding has significant implications for criticality calculations, fuel loading prediction, and reactivity measurement.
Experimental evidence confirms that a single superconductor can induce electron pairing and synchronization in another material, enabling the creation of a Josephson junction with only one superconductor. This discovery has potential implications for topological superconductors and conventional quantum computers.
Professor Keisuke Fujii, a researcher at The University of Osaka, has been selected as one of the Quantum 100 for his work on quantum computing. He was honored with this recognition in 2025, the centennial year of quantum mechanics.
Theoretical physicists at MIT propose that under certain conditions, magnetic material’s electrons could form quasiparticles called “anyons” that can flow together without friction. If confirmed, it would introduce a new form of superconductivity persisting in the presence of magnetism.
Researchers at Paderborn University and TU Dortmund University have developed materials smaller than the wavelength of light and precisely manipulated photons. They created quantum light sources for quantum computing and ultra-fast communication, as well as low-temperature electronics to control quantum experiments.
Scientists have created a new quantum state, known as hybrid excitons, at the interface of organic and 2D semiconductors. This unique state enables ultrafast energy transfer, which holds promise for developing next-generation solar cells and optoelectronic components.
A team from the University of the Witwatersrand and Huzhou University discovered a vast alphabet of high-dimensional topological signatures, enabling robust quantum information encoding. This breakthrough utilizes orbital angular momentum to reveal hidden topologies in entangled photons.
In a groundbreaking discovery, researchers at the Technion and Shanghai Jiao Tong University found that photons can emerge with
Researchers have developed a nearly 100 times smaller device that can efficiently control lasers required for thousands of qubits, unlocking potential for larger quantum computers. The device uses microwave-frequency vibrations to manipulate laser light with extraordinary precision.
Researchers at Tohoku University have discovered a universal quantum rule governing electron-phonon coupling strength, which is linked to the fine-structure constant. The study reveals that this strength is quantized and universally applies to crystals, with implications for designing materials with tailored properties.
Antoine Browaeys, a pioneer in quantum physics, has been recognized for his groundbreaking research on neutral atom arrays and their application to controlled quantum simulation of many-body physics. This platform holds great promise for the future of quantum technologies.
Researchers have demonstrated how controlling the structure of photons in space and time enables tailored quantum states for next-generation communication, sensing, and imaging. This breakthrough offers new pathways for high-capacity quantum communication and advanced technologies.
A NPS doctoral student has been recognized for his groundbreaking research on quantum sensing, aiming to detect minuscule changes in mass from afar. The project involves building an atomic fountain, which will enable sensitivity to gravity nine decimal places of precision.
The LHC accelerator confirms an improved model of proton collisions, with implications for our understanding of quantum mechanics. The generalized dipole model describes existing data more accurately and works well in a wider range of energies.
Researchers at TU Wien have developed a new approach to unifying quantum physics and general relativity theory, discovering striking deviations from previous results. The approach uses geodesics and quantized metric to make predictions for measurable quantities.
A team of researchers at the University of Basel has developed a new approach to applying thermodynamics to microscopic quantum systems. They defined what constitutes
Researchers used quantum mechanical simulations to study the interaction of light with ice, revealing new insights into its chemical properties. The findings have implications for understanding the release of greenhouse gases from thawing permafrost and improving predictions of climate change.
Physicists from Swansea University have developed a groundbreaking method for producing and trapping antihydrogen, allowing for the record trapping of 15,000 atoms in under seven hours. This breakthrough could help answer the question of why there is such an imbalance between matter and antimatter.
The University of Nebraska-Lincoln has received a $2.5 million grant from the Department of Energy to investigate ferroelectric oxides and control oxide and van der Waals materials in ways previously thought impossible. The research aims to create new, energy-efficient electronic devices and platforms for smartphones.
A new study by the University of Oxford finds that the energy cost of reading a quantum clock far outweighs the cost of running it, with implications for future quantum technologies. The researchers discovered that the act of measurement itself is a significant source of entropy in quantum timekeeping.
The University of Tennessee will lead work in materials and models under a renewed $125M funding for the Quantum Science Center at Oak Ridge National Laboratory. UT's expertise in quantum spin systems will validate quantum-classical computations, while supporting students' involvement in materials science and neutron experiments.
Researchers from Polish institutes show that identical particles exhibit observable quantum nonlocality due to their fundamental identity. They use advanced tools to analyze and identify classical optical systems where this phenomenon manifests, shedding light on the primordial form of nonlocality in quantum mechanics.
Researchers successfully demonstrated entanglement swapping using sum-frequency generation between single photons with a high signal-to-noise ratio. This achievement is expected to contribute to the miniaturization and efficiency improvement of photonic quantum information processing circuit, as well as the extension of transmission di...
Researchers have successfully demonstrated the feasibility of sending entangled photon pairs from ground stations to a satellite, overcoming previous barriers to quantum satellite communications. This breakthrough could pave the way for future quantum computer networks using satellite relays.
Researchers reviewed novel photonics breakthroughs of 2024, focusing on coupling free electrons with nonlinear optical states in integrated photonic microresonators. This enables ultrafast electron-beam modulation and novel research opportunities for electron imaging and spectroscopy.
Researchers at TU Wien have developed a new computational method that accurately calculates van der Waals forces between large molecules, resolving decades-long discrepancies. The improved method corrects errors in existing approaches and enables reliable predictions for biological systems and renewable energy technologies.
Researchers have utilized a thorium atomic clock to measure the fine structure constant with unprecedented precision, allowing for the investigation of its constancy. The study found that the fine structure constant can be detected three orders of magnitude more precisely than previous methods.
Researchers discovered that supersolid matter synchronizes its spin and rotation under external magnetic fields, enabling the study of exotic quantum behavior. The findings provide a powerful tool for probing quantum systems and may hold implications for understanding cosmic phenomena like neutron star glitches.
Researchers found that when cooled and confined together in a tiny space, photons sort themselves into the state with more occupants. This trend could help design ultra-powerful lasers by exploiting the particles' tendency to conform.
Researchers at Tohoku University propose a way to detect dark matter using highly sensitive quantum devices connected in network structures. This approach outperforms traditional methods and has potential applications beyond dark matter searches.
Physicists from the Institute of Nuclear Physics in Cracow confirmed the validity of the core-halo model by observing coherent production of triplets of pions in high-energy proton collisions. This achievement provides new insights into hadronisation, a process that shapes the matter universe.
Researchers at Aalto University have successfully connected a time crystal to an external system, enabling the development of highly accurate sensors and memory systems for quantum computers. This breakthrough could significantly boost the power of quantum computing by harnessing the unique properties of time crystals.
Researchers have developed a highly efficient fiber-coupled single-photon source that generates photons directly inside an optical fiber, reducing transmission loss. This breakthrough enables the creation of secure quantum communication networks and paves the way for next-generation all-fiber-integrated quantum computing technologies.
A new study by MIT researchers evaluates the scale-up potential of over 16,000 quantum materials, finding that those with high quantum fluctuation in electrons tend to be more expensive and environmentally damaging. The team identified promising candidates with an optimal balance between quantum functionality and sustainability for fur...
Researchers at MIT have developed a new method to improve the stability of optical atomic clocks by reducing quantum noise and stabilizing a laser. The approach, known as global phase spectroscopy, doubles the precision of an optical atomic clock, enabling it to discern twice as many ticks per second compared to traditional setups.
Researchers at Auburn University have developed a new class of materials that allows for tunable electron delocalization, enabling applications in quantum computing, catalysis, and advanced electronics. This breakthrough has the potential to revolutionize fields such as energy transfer, bonding, and conductivity.
Physicists at University at Buffalo have developed a user-friendly template for simulating quantum systems on consumer laptops. The new method, based on the truncated Wigner approximation, allows for efficient simulations of dissipative spin dynamics in hours, saving supercomputers for complex problems.