Articles tagged with Quantum Mechanics
The Technical University of Munich (TUM) has established a flagship partnership with Nanyang Technological University Singapore (NTU), expanding its global presence in the region. The partnership aims to tackle major challenges in Southeast Asia through collaboration on quantum sovereignty, artificial intelligence, and other key areas.
Two major projects led by INRS professors will develop scalable solid-state semiconductors for on-chip quantum communication and advance smart programmable photonics. The $7.4 million funding will support collaborations between academia and industry partners.
For the first time, researchers have measured quadrupolar nuclei using zero-field nuclear magnetic resonance (NMR) spectroscopy. This breakthrough enables precise analysis of molecular structures and spin interactions, with potential applications in medicine and materials science.
A team of physicists from Poland and Germany have successfully calculated the cross-section for Higgs boson production in gluon-gluon collisions. The calculations suggest that no new physics factors are present in the Higgs boson particle.
Researchers have developed a new method to determine the exchange energy of 2D materials, which reveals the stability of their ferromagnetic properties. The study shows that molybdenum disulfide exhibits highly stable ferromagnetism, only about 10 times smaller than in iron.
Researchers at ETH Zurich have successfully manipulated quantum states of single electron spins using spin-polarized currents. This method, which bypasses traditional electromagnetic fields, has the potential to control quantum states with unprecedented precision and localizability.
Researchers used neutron beams to test the Leggett-Garg inequality, a formula that challenges macroscopic realism. The results show that classical explanations are not possible, confirming quantum theory's strange properties.
A team of scientists led by Qimiao Si predicts the existence of flat electronic bands at the Fermi level, which could enhance electron interactions and create new quantum phases. These bands have the potential to enable new applications in quantum bits, qubits, and spintronics.
Researchers at Tohoku University have unveiled a groundbreaking discovery of a one-dimensional topological insulator (TI), a unique state of matter that differs from conventional metals, insulators, and semiconductors. This breakthrough has significant implications for the development of qubits and highly efficient solar cells.
UTA researchers found that sending material in advance and using Zoom features like chat, polling, and breakout rooms helped keep participants engaged. Short, relevant videos also proved effective in teaching complicated topics. The team recommends a structured approach with activities like icebreaker exercises to foster community enga...
Researchers developed a new method, Fourier Transform Noise Spectroscopy (FTNS), to analyze the noise affecting qubits, revealing its frequency spectrum. This approach handles various types of noise, including complex patterns, making it a more practical solution for widespread use.
Researchers have developed a flat lens made of tungsten disulphide with concentric rings that focuses light using diffraction, leveraging quantum effects to enhance its efficiency. The lens is half a millimeter wide and just 0.6 nanometres thick, making it the thinnest lens on Earth.
Researchers at JPMorgan Chase, Argonne National Laboratory and Quantinuum show a quantum algorithmic speedup for the QAOA algorithm on the Low Autocorrelation Binary Sequences problem. The team demonstrates a significant step towards reaching quantum advantage, laying the foundation for future impact in production.
Researchers created a topological quantum simulator device that operates at room temperature, allowing for the study of fundamental nature of matter and light. The device has the potential to support the development of more efficient lasers.
Researchers demonstrate a way to describe spin-boson systems and efficiently configure quantum devices in a desired state. Non-Gaussian states are used to retain powerful mathematical machinery while describing diverse quantum states.
Researchers at Washington University in St. Louis have developed a new technique to enhance quantum entanglement stability in qubits. This breakthrough addresses the challenges of maintaining coherence and reliability in quantum systems.
Researchers demonstrate novel method of boson sampling using ultracold atoms in a two-dimensional optical lattice, overcoming previous limitations in simulations and photon-based experiments. The achievement showcases the potential of quantum devices for performing non-classical computational tasks.
Researchers at the University of Basel and NCCR SPIN have successfully coupled two hole-spin qubits, enabling fast and precise controlled spin-flip operations. This achievement is a significant milestone in the quest for practical quantum computing, with millions of qubits on a single chip.
Researchers from the University of Portsmouth unveiled a quantum sensing scheme that enhances superresolution imaging techniques, circumventing traditional limitations like diffraction. The new technique achieves unprecedented levels of precision, paving the way for new high-precision sensing schemes.
Researchers at JILA and NIST propose a method to dampen atomic recoil using momentum-exchange interaction, allowing for more precise measurements in quantum sensing. By exchanging photons between atoms, the researchers create a collective absorption of energy, dispersing recoil among the entire population of particles.
Physicists have achieved a breakthrough by exciting thorium atomic nuclei with lasers for the first time, enabling precise tracking of their return to original energy states. This discovery has far-reaching implications for precision measurement techniques, including nuclear clocks and fundamental questions in physics.
Researchers analyzed genomes of 363 bird species and found significant variations in cryptochrome 4 gene, indicating adaptation to environmental conditions. This specialization could be related to magnetoreception in migratory birds.
Researchers from the University of Copenhagen have developed a new method for measuring time using superradiant atoms, which could improve precision in areas like GPS systems and space travel. The technique uses superradiance to read out atomic oscillations without heating up the atoms.
An international research team has demonstrated that electrons in naturally occurring double-layer graphene move like particles without any mass, similar to light. This discovery has the potential to develop tiny, energy-efficient transistors at a nanoscale.
Scientists create a small drum that stores data sent with light in its sonic vibrations, allowing for secure transmission over long distances. This innovation has the potential to revolutionize quantum computing and enable an internet with quantum speed and security.
Physicists at Princeton University have successfully visualized the Wigner crystal, a quantum phase of matter composed of electron crystals. The team used a scanning tunneling microscope to directly image the crystal, confirming its properties and enabling further study.
Researchers at Princeton University have discovered a novel quantum effect termed “hybrid topology” in a crystalline material made of arsenic atoms. This finding combines two forms of topological quantum behavior—edge states and surface states, creating a new state of matter.
Researchers pioneer technique to control polaritons, unlocking potential for next-generation materials and surpassing performance limitations of optical displays. The breakthrough enables stable generation of polariton particles with enhanced brightness and color control.
Researchers at Rice University and the University of Illinois Urbana-Champaign have found that chemical reactions can scramble quantum information, similar to black holes. This discovery could lead to new methods for controlling molecular behavior and improving the reliability of quantum computers.
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.