Articles tagged with Quantum Mechanics
Enrico Fermi's ideas on Fermi-Dirac statistics played a key role in the origins of quantum mechanics, but have been largely overlooked in historical analysis. The new research assesses their immediate impact on early conceptions of quantum mechanics.
Researchers from Mexico and Poland discover fragments of a proton's interior exhibit maximum entanglement, affecting theoretical predictions. The study relates this phenomenon to concepts like entropy and temperature, previously linked to exotic objects like black holes.
Researchers from the University of Seville have conducted a groundbreaking experiment demonstrating quantum contextuality without loopholes. The study uses atomic ions to show that certain probabilities have a limit, contradicting previous findings.
A team led by Prof. Dr. Giuseppe Sansone used attosecond pulses to investigate the motion of electrons after photon absorption, finding they experience a complex landscape with potential peaks and valleys. This approach can be extended to more complex molecular systems, providing unprecedented temporal resolution.
Researchers have observed the 'quantum boomerang effect,' a fundamental feature of localized matter that baffles classical predictions. They also report a new kicked quasicrystal and strong evidence for a real-life time crystal, produced using Google's Sycamore quantum computer.
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.
The researchers created treelike shapes, a Möbius strip, and other patterns by controlling atomic interactions without physically moving the atoms. They demonstrated nonlocal interactions, where atoms at distant ends interact just as strongly as those near each other.
Scientists at EPFL have created strained crystalline nanomechanical resonators with ultralow dissipation, enabling the creation of high-purity quantum states. These nanostrings could be used as precision force-sensors, taking advantage of interactions such as radiation pressure and magnetic fields.
Physicists have measured Albert Einstein's theory of general relativity at the smallest scale ever, demonstrating time dilation effects between two tiny atomic clocks separated by just a millimeter. The experiments suggest a way to make atomic clocks 50 times more precise than today's best designs.
Rice University scientists discovered that strong magnetic fields can manipulate the material's optical phonon mode, a phenomenon previously unseen. The effects were much stronger than expected by theory, revealing a new way of controlling phonons.
Thirumalai Venkatesan's research aims to create a human-brain like computing system using quantum technology. His team has discovered a wonder molecule that enables molecular devices to mimic the brain's logic and reconfigure physical wiring, leading to enhanced computational power and reduced energy consumption.
Physicists at the University of Sussex have developed a remote monitoring system for quantum devices, allowing for real-time control and issue resolution. This system enables researchers to monitor environmental factors such as temperature, pressure, and laser beams in ultracold quantum laboratories.
Physicists have measured the oscillation frequency of Bs0 mesons with unprecedented accuracy, revealing that they oscillate between matter and antimatter three trillion times per second. This measurement agrees with quantum mechanics predictions and narrows search areas for particles undescribed by the Standard Model.
Researchers at PSI's Laboratory for Muon Spin Spectroscopy have discovered strong evidence of exotic charge order and orbital currents in a correlated kagome superconductor. The findings provide a new insight into unconventional superconductivity and its relationship with the quantum anomalous Hall effect.
Researchers at NIST developed an instrument to image acoustic waves over a wide range of frequencies with unprecedented detail. The new instrument captures these waves by relying on an optical interferometer, allowing for the creation of three-dimensional movies of microresonators' vibrational modes.
Researchers successfully fabricate CNT transistors with controlled quantum transport at room temperature by altering the helical structure of metallic CNTs. This breakthrough may lead to the creation of energy-efficient nanoscale electronic devices.
Researchers propose that water molecules interact with electrons in the nanotube walls, slowing down flow. Theoretical findings could significantly impact proposed carbon nanotube applications, such as filtering salt from seawater or generating energy.
A collaborative research project on quantum technology has started on the International Space Station (ISS), utilizing ultracold atoms to conduct fundamental research and develop future quantum sensors. The BECCAL experiment is a multi-user platform open to international scientists, allowing them to test their ideas in practice.
A powerful Sandia National Laboratories supercomputer simulation model called SNAP captures the melting of diamond under extreme pressures and temperatures, cracking and recrystallizing its rigid carbon lattice. The work could aid understanding of carbon-based exoplanets and has implications for nuclear fusion efforts.
Physicist Guido Pagano has won a prestigious CAREER award from the National Science Foundation (NSF) to study quantum entanglement and develop new error-correcting tools for quantum computation. He aims to understand how measurement affects entangled systems and create tools to correct errors caused by quantum decoherence.
A new graphene-based platform allows researchers to control the interaction strength between electrons and holes, enabling the formation of quantum condensates at room temperature. The platform's tunability enables testing of theoretical predictions about superconductivity and its potential for higher temperature limits.
Researchers at Brown University discovered that magic-angle graphene becomes a powerful ferromagnet when spin-orbit coupling is introduced. This finding opens up new possibilities for quantum science research and potential applications in computer memory and quantum computing.
Researchers studied electron transport through a single water molecule in a C60 cage, revealing multiple tunneling-induced excited states. The findings suggest the transition between ortho- and para-water occurs simultaneously within a minute.
Researchers at MIT have directly observed the interplay of interactions and quantum mechanics in a rotating fluid of ultracold atoms. The team created a spinning cloud of sodium atoms, which formed a needle-like structure before breaking into a crystalline pattern resembling miniature quantum tornadoes.
Scientists have observed that ionizing radiation can cause intermolecular Coulombic decay in organic molecules, leading to damage in DNA and proteins. This new understanding could lead to the development of more effective substances for radiation therapy and improve knowledge of how radiation damages healthy tissue.
Scientists successfully demonstrated efficient electron beam modulation using integrated photonic microresonators, paving the way for atomic-scale imaging and coherent spectroscopy.
Physicists at the University of Queensland have developed a comprehensive understanding of vortex pinning and unpinning in two-dimensional superfluids. The study reveals four regimes governing these interactions, including a 'pair creation' regime where vortices are pinned to defects.
Researchers have discovered that negative capacitance in topological transistors can switch at lower voltage, potentially reducing energy losses. This new design could help alleviate the unsustainable energy load of computing, which consumes about 8% of global electricity supply.
The ATIQ project aims to develop reliable, user-friendly quantum computing demonstrators based on ion trap technology within 30 months. The consortium will optimize hardware for applications in chemistry and finance, paving the way for new approaches in credit risk assessment.
Researchers develop theory on exploiting space reflection and time reversal symmetries to control transport and correlations in quantum materials. The discovery may lead to the design of future quantum devices relying on strong correlations and exceptional points in oligomer chains.
A new computational method has been developed to accurately predict oxide reactions at high temperatures, even without experimental data. This approach combines quantum mechanics with machine learning to design clean carbon-neutral processes for steel production and metal recycling.
The study found that applying an electrical potential can stabilize high-temperature superconducting superhydrides at much lower pressures than previously thought. This new method could lead to the creation of new materials with broad applications in consumer and industrial sectors.
Researchers find that triangular-patterned materials can exhibit a mashup of three different phases, with each phase overlapping and competing for dominance. As temperature increases, the material becomes more ordered due to the breaking down of these competing electron arrangements.
Theorists have observed a rare phenomenon called the quantum anomalous Hall effect in bilayer graphene, a naturally occurring, two-atom thin layer of carbon atoms. The researchers found eight different ground states exhibiting ferromagnetism and ferroelectricity simultaneously.
A new analytical technique combines quantum physics and molecular biology to track biomolecule changes in less than a trillionth of a second. By analyzing the collective movement of atoms, researchers were able to reduce 6000 dimensions to four and characterize conical intersections of quantum states in complex molecules.
Researchers have discovered a three-channel Kondo effect in a cubic holmium compound using numerical methods, predicting an exotic quantum ground state and potential applications. The study found a residual entropy value at ultra-low temperatures, matching the predicted value by the three-channel Kondo effect.
Researchers at University of Copenhagen have developed a new quantum circuit that can operate and measure all four qubits simultaneously. This breakthrough resolves a significant engineering headache in the development of large functional quantum computers.
The 'strange metal' state in high-temperature superconductors exhibits a linear function of temperature, suggesting the involvement of quantum entanglement. By suppressing charge density waves, researchers were able to restore this state, expanding its range and offering a promising new avenue for research.
Researchers have shown a new way to probe the properties of anyons, strange quasiparticles that could be useful in future quantum computers. By measuring subtle properties of heat conductance, they can detect anyons even in non-conducting materials.
Experts successfully connect quantum computers and sensors on a practical scale, enabling entanglement-based quantum communications. The team demonstrated scalability of entanglement-based protocols across three remote nodes using flexible grid bandwidth provisioning.
The Quantum Sensors project aims to create ultrasensitive gyroscopes and accelerometers using quantum states, enabling precise measurements for self-driving cars and spacecraft. This technology could capture information not provided by GPS, improving navigation and stability in various environments.
Scientists discovered structural and surface chemistry defects in superconducting niobium qubits that may cause loss. The study pinpointed these defects using state-of-the-art characterization capabilities at the Center for Functional Nanomaterials and National Synchrotron Light Source II.
A research team at POSTECH observes synchronized oscillations of optical intensity and symmetry-breaking transitions at an exceptional point. They also discover energy-difference conservation for the first time in the optical domain using APT symmetry platforms based on nonlinear four-wave-mixing.
Researchers at CU Boulder have discovered a way to cool down ultra-small heat sources by packing them closer together, using computational simulations to track the passage of heat. The findings highlight the challenges of designing efficient electronic devices and could lead to faster cooling in future tech.
A team of researchers from Harvard and MIT observed hydrodynamic electron flow in three-dimensional tungsten ditelluride for the first time using a new imaging technique. The findings provide a promising avenue for exploring non-classical fluid behavior in hydrodynamic electron flow, such as steady-state vortices.
Researchers have developed a new approach to generating terahertz radiation, which can be directly generated on an electronic chip. This breakthrough enables the use of terahertz radiation in various applications, including materials science and communications technology.
Researchers at DTU have developed a new method for designing nanomaterials with unprecedented precision, allowing for the creation of compact and electrically tunable metalenses. This breakthrough enables the development of high-speed communication and biotechnology applications.
Researchers developed a new tool to analyze large superconducting circuits, allowing for the extraction of quantitative information previously inaccessible. The method uses a variational tight-binding approach to simulate circuit behavior, paving the way for further advancements in quantum computing.
Physicists have successfully tested the theory of generalized hydrodynamics in one-dimensional gases, demonstrating its accuracy in simulating out-of-equilibrium quantum systems. This breakthrough could greatly simplify the study of such systems and eventually inform the development of quantum-based technologies.
A new technique developed by KAIST researchers uses a 'nanoscale focus pinspot' to isolate and enhance the quality of quantum emitters. By reducing unwanted background noise without altering the optical properties, this method enables the production of single, pure photons with improved purity.
Physicists have developed a new method to identify and address imperfections in materials for quantum computing. The technique, terahertz scanning near-field optical microscopy, has been used to optimize fabrication protocols and reduce decoherence.
Researchers developed a precise stopwatch to count single photons, enhancing imaging technologies like forest mapping and disease diagnosis. The new time lens technology improves photon timing resolution by orders of magnitude.
Researchers at Nagoya City University have detected strongly entangled pair of protons on a nanocrystalline silicon surface. This breakthrough could enable the creation of more qubits and ultra-fast processing for supercomputing applications, revolutionizing quantum computing.
Researchers have developed a new 2D alloy material combining five metals that acts as an excellent catalyst for reducing CO2 into CO. The high-entropy transition metal dichalcogenides (TMDCs) alloy has potential applications in environmental remediation, transforming carbon dioxide into a hydrocarbon.
Researchers have developed the fastest real-time quantum random number generator to date, combining a photonic integrated chip with optimized postprocessing. The device generates truly random numbers at nearly 19 gigabits per second and measures only 15.6 by 18.0 millimeters.
UTA is launching a nationwide quantum education initiative for secondary teachers, capitalizing on familiar content areas in existing curricula. The three-year program will provide stipends, resources, and equipment for classrooms and student STEM camps.
A Penn State scientist has developed a new mathematical formula that may solve the decades-old problem of spacetime in Einstein's theories of relativity. By placing space and time on an equal footing, Gopalan's approach removes the negative sign problem, allowing for traditional Euclidean geometry to be applied.
Lancaster physicists create novel method using nanoscience to detect individual quantum vortices in superfluid helium, revealing simpler dynamics than classical turbulence. This breakthrough could provide clues on solving the Navier-Stokes Equations, governing fluid flow.
Researchers at the University of Stuttgart have successfully identified promising quantum bits in two-dimensional materials. The discovery enables robust generation, reading out, and control of quantum bits, paving the way for a new boost in quantum technologies.
Researchers found that shape influences internal symmetry in strontium titanate, altering its cubic to tetragonal structure. This discovery has great scientific and practical importance for electronic devices and thin-film technologies.