Articles tagged with Quantum Mechanics
Scientists have made significant breakthroughs in Quantum Key Distribution (QKD) technology, enabling secure data transfer over long distances. The new method uses Continuous Variable Quantum Key Distribution to distribute quantum-encrypted keys via fibre optic cables, paving the way for a quantum-secure internet infrastructure.
Researchers have made significant progress in generating photon pairs on chip through spontaneous four-wave mixing, enabling the creation of efficient quantum light sources. However, challenges remain, including low pair generation rates and collection efficiencies, which limit the performance of these sources.
Researchers at SLAC National Accelerator Laboratory propose detecting thermalized dark matter, which builds up on Earth's surface, using quantum sensors. The study suggests that superconducting quantum devices could be redesigned to detect low-energy galactic dark matter particles.
Researchers developed a new single-molecule transistor that utilizes quantum interference to switch electrons on and off. The device boasts high precision switching, stability, and improved subthreshold swing compared to existing transistors.
The Princeton Plasma Physics Laboratory has opened a new Quantum Diamond Lab to study plasma processes for creating diamond material with unique properties. Scientists aim to harness this material for quantum computing, secure communication, and precise measurements, enabling breakthroughs in fields like medicine and energy.
Researchers at Carnegie Mellon University have created a new machine learning model that can simulate reactive processes in diverse organic materials and conditions. The model, called ANI-1xnr, performs simulations with significantly less computing power and time than traditional quantum mechanics models.
Researchers discovered charge fractionalisation in an iron-based metallic ferromagnet using laser ARPES spectroscopy, revealing collective excitations and quasiparticles. The study challenges fundamental quantum mechanics by showing electrons can behave as independent entities with fractionally charged pockets.
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.
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 successfully observed and controlled quantum effects at room temperature using a novel optomechanical system. The breakthrough enables practical applications of quantum technologies and expands the study of macroscopic quantum mechanics.
A new technique enables researchers to identify and control a greater number of atomic-scale defects in diamonds, which can be used to build larger systems of qubits for improved quantum sensing. This approach uses a specific protocol of microwave pulses to locate and extend control to additional defects.
Researchers have discovered a new state of matter characterized by chiral currents, generated by cooperative electron movement. This phenomenon has implications for the development of new electronic devices and technologies, including optoelectronics and quantum technologies.
A team of researchers from the universities of Mainz, Olomouc, and Tokyo has successfully generated a logical qubit from a single light pulse that can correct errors. This breakthrough uses a photon-based approach to overcome the limitations of current quantum computing technology.
West Virginia University engineer Yuhe Tian is developing powerful artificial intelligence tools that can reimagine the sustainability of chemical manufacturing. She aims to harness quantum intelligence to innovate environmentally friendly chemical plant designs.
Physicists at the University of Colorado Boulder have discovered a way to create scenarios where information can remain stable in quantum computer chips, potentially leading to advances in quantum computing. The team's findings could also influence other fields, such as materials science and engineering.
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.
In a study, an international team of physicists demonstrated that maximum entanglement is present in the proton even when pomerons are involved. The research complements previous findings on maximal entanglement in proton collisions and shows its universality.
Scientists at the University of Basel developed a miniaturized quantum memory that can store photons in tiny glass cells. The innovation enables the mass production of quantum memories, paving the way for future quantum networks and secure communication.
A new experiment could test whether relatively large masses have a quantum nature, resolving the question of whether quantum mechanics works at a larger scale. The proposed experiment exploits the principle of measurement-induced collapse to observe changes in motion.
Researchers at Princeton University discovered a sudden change in quantum behavior while experimenting with a three-atom-thin insulator. The findings suggest the existence of unique quantum phase transitions that disobey established theories, promising to enhance our understanding of quantum physics and superconductivity.
Researchers from the University of Innsbruck propose an experiment to observe macroscopic quantum effects in a dark potential created by electrostatic or magnetic forces. By letting a cooled nanoscale glass sphere evolve in this non-optical environment, they aim to rapidly generate a macroscopic quantum superposition state.
Researchers at Hiroshima University have found that quantum systems exhibit contextual behavior, where measurements change the results, rather than particles separating from their properties. This discovery sheds light on the counterintuitive nature of quantum mechanics and may lead to practical applications in quantum computing.
Researchers use quantum chemical calculations to understand sodium's transformation into an insulator at high pressures. The study confirms theoretical predictions made by Neil Ashcroft and connects it with chemical concepts of bonding.
Researchers at Columbia University paired laser light with crystal lattice vibrations to boost the nonlinear optical properties of hexagonal boron nitride (hBN), a stable 2D material. The team achieved over a 30-fold increase in third-harmonic generation, generating new frequencies and efficiently producing optical signals.
Embedding nanodiamonds in polymer can advance quantum computing and biological studies. The technique, developed at the University of São Paulo, enables integration of quantum emitters into photonic devices and cell marking applications.
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.
Researchers at Texas A&M's Institute for Quantum Science and Engineering are part of a $42 million program to advance laser-driven fusion energy. The RISE hub will focus on innovative target concepts, excimer gas lasers, and solid-state laser drivers to open up novel IFE regimes.
Researchers at the University of Innsbruck have developed a new approach to study entanglement in quantum materials. By using a quantum simulator with 51 particles, they were able to extract information about the existing entanglement with drastically fewer measurements than previously thought possible.
Researchers observe measurement-driven topological transitions in quantum systems, finding that imperfections affect the transition's location and shape. The discovery has potential applications in sensing and characterization of optical elements.
Researchers analyzed proton-proton collisions to understand the hadronization process, a phenomenon critical to our understanding of physical reality. The study found that quark-gluon plasma can be produced in single proton collisions and that correlations between particles are influenced by angles with respect to the beam axis.
Scientists at the University of Bristol have found a rare phenomenon in purple bronze that could create an ideal 'perfect switch' in quantum devices. The material exhibits emergent symmetry, where it can transition between insulating and superconducting states with temperature changes.
A team of researchers has confirmed the presence of quantum spin liquid (QSL) behavior in a new material with a triangular lattice structure, KYbSe2. The study used a combination of theoretical, experimental and computational techniques to observe hallmarks of QSLs, including quantum entanglement and exotic quasiparticles.
Researchers on the International Space Station produced a quantum gas containing two types of atoms for the first time in space. This achievement enables studying quantum chemistry, which focuses on how different atoms interact and combine with each other.
A team in China has developed a cost-effective cloud storage solution that uses quantum key distribution and Shamir's secret sharing algorithm to provide quantum security and fault tolerance. The method disperses keys via the algorithm, applies erasure coding, and securely transmits data through QKD-protected networks.
Researchers controlled spin dynamics in a Heusler compound using extreme ultraviolet high-harmonic probes, enabling precise manipulation of magnetic behavior and potential for redefining electronics and data storage. The study's results matched theoretical models, offering insights into spintronics and its applications.
Researchers at Rice University have discovered a way to transform a rare-earth crystal into a magnet by using chirality in phonons. Chirality, or the twisting of atoms' motion, breaks time-reversal symmetry and aligns electron spins, creating a magnetic effect.
NTU Singapore has expanded its research collaborations with French partners to push the boundaries of science. The university has inked six new partnerships and renewed existing collaborations across various fields, including quantum physics, nuclear energy, and sustainability.
Researchers developed diamond quantum sensors to improve resolution in magnetic imaging, enabling detailed visualization of microstructures within cells. The sensors can detect water molecules and explore ion diffusion, with potential applications in battery development and medical research.
Researchers at University of Otago have developed a new form of antenna for radio waves using an atomic vapor, providing high sensitivity and broad tunability. The portable design enables efficient measurement of fields over long distances, making it suitable for defence and communications applications.
Researchers at the University of Cambridge have shown that simulating models of hypothetical time travel can solve experimental problems in quantum metrology. By manipulating entanglement, they can retroactively change past actions to improve outcomes in the present. The simulation has a 75% chance of failure but provides valuable insi...
A team of international researchers has discovered a controllable nonlinear Hall effect in twisted bilayer graphene, which holds promise for applications in new materials and quantum information industries. The nonlinear transport behaviour can be easily controlled and manipulated by adjusting the dispersion of flat bands and twist ang...
A WVU researcher is developing new methods to fast-track the discovery of quantum materials, which could lead to breakthroughs in fields like quantum computing and superconductors. The goal is to streamline the discovery process using computational and experimental tools.
A new study uses computer simulations to predict the formation process of spin defects in silicon carbide, an attractive host material for spin qubits. The team's findings represent an important step towards identifying fabrication parameters for spin defects useful for quantum technologies.
Scientists have developed a nonrelativistic and nonmagnetic mechanism for generating terahertz waves, harnessing the electrical anisotropy of two conductive oxides. This approach produces signals comparable to commercial terahertz sources and offers a high terahertz conversion efficiency.
Rice University researchers have been awarded a 4-year, $1.2 million grant from the Department of Energy to evaluate different physical systems used to build quantum computers. The project aims to provide a framework for comparing the viability and computational potential of various approaches to building quantum computers.
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.
Researchers at Linköping University develop a new type of quantum random number generator based on perovskite light emitting diodes, providing improved randomness and security. The technology has the potential to be cheaper and more environmentally friendly than traditional methods.
Researchers developed a photoelectrochemical technique to precisely tune the lasing wavelength of microdisk lasers with subnanometric accuracy. The new approach facilitates the fabrication of micro- and nano-laser batches with precise emission wavelengths.
Researchers from Kyoto University have demonstrated the thermal quantum Mpemba effect in a wide range of initial conditions, where hotter quantum systems cool faster than initially colder ones. The team used a quantum dot connected to a heat bath and observed anomalous thermal relaxation at later times.
Researchers have created an 'Alice ring' that verifies a decades-old theory on monopole decay, opening doors to understanding how these structures function in the universe. The discovery offers a glimpse into a world where particle physics is turned on its head.
Researchers at TU Wien developed a comprehensive computer model of realistic graphene structures, showing that the material's desired effects are stable even with defects. This means graphene can be used in quantum information technology and sensing without needing to be perfect.
Researchers from Hiroshima University found that measurements shape observable reality, suggesting a context-dependent understanding of quantum superpositions. This approach resolves the paradox of conflicting results in quantum experiments and provides evidence against reducing reality to material building blocks.
Researchers discovered that aromatic molecules convert to aerosol particles through a fast reaction process, producing carcinogenic compounds. This finding bridges the gap between theory and observation, providing better understanding of urban environment chemistry.
Researchers at Stevens Institute of Technology use a 350-year-old mechanical theorem to explain complex behaviors of light waves, showing a direct relationship between entanglement and polarization. This connection enables the deduction of hard-to-measure optical properties from simpler light intensity measurements.
A team of researchers has found a way to control the interaction of light and quantum spin in organic semiconductors, even at room temperature. This breakthrough enables the creation of quantum objects with controlled spin states, which could lead to significant advancements in fields like quantum computing and sensing.
A Princeton University-led team has captured the precise microscopic behavior of interacting electrons that give rise to insulating quantum phase in magic-angle twisted bilayer graphene. The study uses scanning tunneling microscopy and achieves pristine samples, allowing for high-resolution images of materials.
Researchers developed a unique approach to predict metal ductility using quantum mechanics, filling the need for an inexpensive and efficient method. The new approach was tested on refractory multi-principal-element alloys and showed robust results, confirming its effectiveness in distinguishing between ductile and brittle materials.
Researchers at NTU Singapore have developed a method to read data stored in antiferromagnets, allowing for potential energy-efficient and high-speed computing. This breakthrough could lead to the creation of new memory chips with improved performance and capacity.
Researchers develop a new method to assemble arrays of quantum rods onto patterned DNA scaffolds, enabling precise control over light emission and polarization. This breakthrough could enhance virtual reality devices and microLEDs with improved depth and dimensionality.
A team of researchers has found a way to control the spin density in diamond by applying an external laser or microwave beam. This technique could enable the development of more sensitive quantum sensors and improve the sensitivity of existing nanoscale quantum-sensing devices.