Articles tagged with Quantum Mechanics
A £5.5m partnership will study and develop quantum software for modelling and simulation, helping to establish a UK quantum software industry. Scientists hope to discover new materials and chemicals through this work, impacting sectors like energy and healthcare.
A thought experiment by Renato Renner and Daniela Frauchiger reveals a paradoxical situation where indirect observation of a quantum mechanical object yields the opposite result of direct observation. The calculation shows that precisely this is not the case, creating a conundrum. While colleagues have proposed various solutions, none ...
A tiny camera lens invented by ANU researchers may enable fast and reliable transfer of quantum information between quantum computers and an optical fibre network. The device uses a metasurface that controls light with functionalities outperforming traditional systems.
Researchers at Penn State successfully organized atoms in a lattice to lower entropy, which could aid in creating a quantum computer. This achievement uses uncharged atoms as qubits, enabling multiple states simultaneously and making computation more efficient.
Researchers at Swansea University's CERN project have improved the synthesis of antihydrogen and accumulated the anti-atoms for greater experimentation scope. This achievement allows for greater control and manipulation of ultra-cold anti-atom properties.
Researchers designed a computer simulation that added correlated noise to the path of energy transfer, significantly accelerating it. This finding challenges traditional views of noise as a hindrance in energy transport, opening up new possibilities for optimizing energy efficiency.
Researchers at KIT have developed the world's smallest transistor that can switch electrical current with a single atom in a solid electrolyte. The single-atom transistor consumes very little energy and operates at room temperature.
A revised roadmap outlines the current status of quantum technology, examining its challenges and goals. The roadmap identifies key areas of focus, including quantum communication, computing, simulation, metrology, and control.
Researchers at Ohio State University have calculated that the probability of an electron burning up in a black hole is negligible. The study challenges the firewall argument, which suggested a ring of fire around black holes, and instead supports the fuzzball theory, which describes black holes as giant balls of yarn.
Scientists from JGU and the University of Kaiserslautern have developed a process to apply a thin magnetic layer to steel, allowing for the detection of microstructural changes by changes in magnetic effects. This method has the advantage of detecting signs of fatigue much earlier than conventional testing procedures.
Colorado State University researchers will use a new grant to create nanoscale spin waves with uncommonly short wavelengths, enabling unprecedented control of electron spins. A tabletop soft X-ray microscope will be developed to study these waves, laying the groundwork for low-power storage and quantum computing applications.
Researchers found that quantum models can entirely mitigate the memory overhead required to model data in reverse, outperforming classical models. This discovery has profound implications for our understanding of time and its arrow.
A new practical Quantum Random Number Generator (QRNG) has been developed, enabling secure communication and overcoming weaknesses of current encryption. This game-changing technology will revolutionize internet security, making attacks based on predicting 'random' events a thing of the past.
A team of physicists has measured a tiny time difference in the ejection of an electron from a molecule depending on its position. The researchers used attosecond laser pulses to study the photoelectric effect in carbon monoxide molecules, achieving precise measurements of the Wigner time delay and electron localization.
Researchers at the University of York have developed a quantum-based method to distribute secure information along communication lines, potentially preventing serious security breaches. By using a detector-independent design, they reduced vulnerabilities in current systems and enabled secure information exchange across the internet.
Physicists have identified a new state of matter in artificial spin ice that exhibits topological ordered phases, previously found only in quantum conditions. The material appears disordered but is actually ordered in a topological form.
The QUANTOX project aims to create a basic memory cell, Qubit, using topologically protected technology. The research team uses oxide interfaces with unique physical qualities to develop Quantum Topological systems that can be easily integrated within current technology.
Physicists have discovered a way to create complex structures called Rydberg polarons using ultracold strontium atoms, which can be assembled like Lego blocks. The findings reveal new insights into the basic nature of matter and challenge traditional chemistry laws.
Researchers propose a novel method to cool quantum devices by leveraging quantum interference, effectively cancelling heat flow and mitigating thermal noise. This innovative approach has the potential to significantly enhance the performance and stability of quantum computers.
Researchers at the University of Sydney have discovered a 'quantum hack' that improves quantum error correction by up to 400 percent, allowing for more efficient computations. This breakthrough could lead to fewer physical qubits required for basic calculations, making practical quantum computers a reality.
KAIST researchers designed metallic nanostructure substrates to enhance Quantum Dot LED efficiency and reduce production costs. The technology uses silver and aluminum nanoparticles to increase fluorescent properties of QDs, resulting in brighter displays and lower unit prices.
Physicists successfully cool a nanoelectronic chip to a temperature lower than 3 millikelvin using magnetic cooling. They also maintain these extremely low temperatures for seven hours, enabling various experiments close to absolute zero.
Excitonium is a condensate that defies reason, consisting of a boson formed by an escaped electron and a hole it left behind. Researchers at the University of Illinois used a novel technique to measure collective excitations and observed soft plasmon phase, providing definitive evidence for excitonium discovery.
Scientists at Max Planck Institute discovered robust Bain distortion in premartensite phase of Pt-substituted Ni2MnGa, which transforms to martensite with additional Bain distortion on further cooling. This phenomenon enhances applicability as magnetic actuators and refrigeration technology due to lower hysteresis.
Q-Ctrl, founded by University of Sydney's Professor Michael Biercuk, aims to provide trusted quantum control solutions for various industries. The company has attracted multimillion-dollar investments and is focused on reducing qubit errors to improve the performance of quantum devices.
Researchers at UC Riverside developed a photodetector that doubles its efficiency by combining two distinct materials, producing quantum mechanical processes. This breakthrough can revolutionize the way solar energy is collected.
Researchers at Florida State University found that the heaviest and rarest elements do not follow traditional rules of quantum mechanics. Instead, Albert Einstein's Theory of Relativity governs their behavior, revealing unusual chemistry patterns. The study sheds new light on these lesser-known elements.
Researchers have developed a new method to simulate infrared spectra using artificial neural networks, reducing simulation time from thousands of years to minutes. This breakthrough enables the analysis of complex chemical systems and paves the way for widespread adoption in various fields.
Researchers at Virginia Commonwealth University have discovered a stable tri-anion particle, made of boron and beryllium and cyanogen, which could be used in aluminum ion batteries. The discovery was recognized as a VIP paper by Angewandte Chemie and has potential applications in various industries.
The University of Sydney and Microsoft have partnered to create a premier centre for quantum computing, focusing on scaling up the technology and its applications. The partnership aims to build a rich and robust local quantum economy, attracting skilled people and investing in new equipment.
Researchers have successfully manipulated the 'valley' property in electrons using light, a crucial step towards realizing valleytronics technology. This breakthrough has potential applications in logic gates and is a major advancement in the field of materials science.
A team of Würzburg physicists has developed a new concept for topological insulators that can process data at room temperature, eliminating the need for extreme cooling. This breakthrough could lead to efficient information technology and advances in spintronics.
An international research team has successfully brought Maxwell's Demon to life using superconducting circuits. The team observed the demon gain useful energy from a thermodynamic system, bypassing the second law of thermodynamics, and tracked how information is stored in its memory.
A team of researchers at the University of Pennsylvania has created the most thorough model to date of how smart materials work in ultrasound technology. They found striking similarities with the behavior of water, which could lead to new materials design and higher quality piezoelectrics.
A team of researchers from Caltech and Berkeley Lab found that tiny amounts of oxygen beneath the copper catalyst's surface play a critical role in activating carbon dioxide for conversion to ethanol. The discovery sheds light on the atomic-level details of the reaction, enabling scientists to predict ways to improve efficiency.
UBC physicists Qingdi Wang and Bill Unruh propose a new theory that suggests the universe's expanding space-time is constantly fluctuating, leading to an accelerating expansion. This idea resolves a major incompatibility issue between quantum mechanics and general relativity.
Researchers developed a novel approach to solve difficult computational problems using statistical mechanics and reversible logic gates, avoiding phase transitions that slow down the process. The vertex model can be applied to machine learning, circuit optimization, and other major computational challenges.
Researchers have developed a new theoretical framework to identify computations that occupy the 'quantum frontier', the boundary between problems solvable by classical and quantum computers. The study shows that these computations can be performed with near-term, intermediate quantum computers.
Researchers have tested an alternative version of quantum mechanics that uses hyper-complex numbers, predicting new effects and commutation properties. The study found no need for these alternative rules to describe the experiment, but emphasizes the need for further testing.
Researchers have developed a way to program randomness into quantum circuits, paving the way for a boson sampler and potentially a quantum computer. The breakthrough, led by Dr Nick Russell's work, solves a key problem in quantum computing and offers a significant milestone in the field.
Researchers developed a miniature tripler that generates UV pulses with high efficiency and miniaturization, overcoming previous limitations. The device uses software optimization to achieve a factor of three increase in efficiency.
Researchers from Canadian and international institutions discuss the impact of microbes on human health, disease, and society, as well as the neural basis of emotional memories. They also explore quantum computing and its potential to revolutionize cybersecurity.
Researchers at the University of Ottawa have developed a high-dimensional quantum cloning machine that can intercept secure quantum messages. By analyzing the results, they discovered clues to protect quantum computing networks from potential hacking threats.
Researchers mapped over 23,000 individual atoms in an iron-platinum nanoparticle to reveal the material's defects and properties. The study reveals unique arrangements of atoms at grain boundaries, which significantly influence material properties.
Scientists at the University of Sussex have invented a new method to build large-scale quantum computers using voltages on microchips, rather than aligning laser beams. This breakthrough enables the construction of universal quantum computers with potentially revolutionary applications in fields like materials science and medicine.
A team of researchers has developed a new type of quantum heat engine photocell that can regulate solar power conversion without active feedback or adaptive control mechanisms. This design is inspired by the natural regulation of energy flow in photosynthetic green plants, and could lead to more efficient and cost-effective solar cells.
Carl M. Bender was awarded the 2017 Dannie Heineman Prize for Mathematical Physics for his development of PT symmetry theory in quantum systems. This theory has generated profound new mathematics and impacted broad areas of experimental physics, inspiring generations of mathematical physicists.
A team of scientists has determined a more precise version of the second law of thermodynamics and applied it to small quantum systems. The study found that violations of the law are rare, but can occur with significant probability in small quantum objects.
Argonne researchers posit way to locally circumvent Second Law of Thermodynamics, predicting conditions under which entropy might decrease on the microscopic level, potentially enabling a local quantum perpetual motion machine.
A team of researchers at the University of Warsaw has developed a bioinspired micro-robot capable of mimicking caterpillar gaits in natural scale. The robot harvests energy from green light and can travel on flat surfaces, climb slopes, squeeze through narrow slits, and transport loads.
The study proposes an occupancy frequency approach to select representative configurations for reaction mechanism calculations, reducing the number of QM calculations required in hybrid simulations. This method focuses on average structure configurations, enabling a powerful tool for multiscale simulations.
NIST's N4 watt balance conducts its first measurement of Planck's constant, achieving accuracy of 34 parts per billion. This result is consistent with other countries' measurements and sets the stage for a new kilogram definition by 2018.
Researchers have observed experimental indication of a phenomenon where superconductors, lasers, and Bose-Einstein condensates coexist. By combining experiments with theoretical models, they found that high-energy side-peak emission may originate from strongly bound electron-hole pairs persisting in an optical cavity.
Professor Jim Al-Khalili has received the first-ever Stephen Hawking Medal for his work in promoting public awareness of science through various disciplines. The medal recognizes his efforts to communicate complex physics concepts through documentaries and broadcasting.
Victor Flambaum's appointment at the Helmholtz Institute Mainz is expected to give great impetus to the development of the PRISMA Cluster of Excellence. He will be collaborating with various departments, including experimental groups working on dark matter and antimatter research.
Researchers created a nanoscale drum using graphene to manipulate vibrations with high tunability and controllable coupling between modes. This enabled the creation of new notes and amplification of vibrations, opening doors to probing fundamental physics and improving sensor sensitivity.
Researchers at Colorado State University have discovered a new way to produce electron spin currents using non-polarized light, a potential game-changer for microelectronics. This achievement could lead to more efficient and powerful devices with reduced power consumption.
Researchers from over 30 universities compared quantum simulation codes, achieving more precise results than previous calculations. The study defines a quality criterion to verify future software developments and contributes to higher standards for materials property simulations.
Researchers create single-particle engine that can store and generate energy, operating at 0.3% efficiency with a power output of 10^-22 watts. The device has potential applications in quantum thermodynamics and nano engineering.
Researchers at Aalto University have made a groundbreaking discovery in heat transport, enabling efficient cooling of quantum processors and paving the way for faster and more reliable quantum computing. The innovation uses photons to transfer heat over long distances, surpassing previous limitations.