Let’s talk! Scientists demonstrate coherent coupling between a quantum dot and a donor atom in silicon, vital for moving information inside quantum computers.
Researchers at Los Alamos and partners in France and Germany are exploring the enhanced potential of carbon nanotubes as single-photon emitters for quantum information processing. Their analysis of progress in the field is published in this week’s edition of the journal Nature Materials.
Researchers at QuTech in Delft have succeeded in generating quantum entanglement between two quantum chips faster than the entanglement is lost. Entanglement - once referred to by Einstein as "spooky action" - forms the link that will provide a future quantum internet its power and fundamental security. This opens the door to connect multiple quantum nodes and create the very first quantum network in the world.
A team of physicists at the University of Vermont have discovered a fundamentally new way surfaces can get wet. Their study may allow scientists to create the thinnest films of liquid ever made—and engineer a new class of surface coatings and lubricants just a few atoms thick.
A theorized but never-before detected property of quantum matter has now been spotted in the lab.
Sometimes a good theory just needs the right materials to make it work. That’s the case with recent findings by UT’s physicists and their colleagues, who designed a two-dimensional magnetic system that points to the possibility of devices with increased security and efficiency, using only a small amount of energy
A research team led by Jigang Wang of Iowa State University and the Ames Laboratory has developed a new quantum switching scheme that gives them access to new and hidden states of matter. The journal Nature Materials has just published a paper about the discovery.
A Rutgers-led team of physicists has demonstrated a way to conduct electricity between transistors without energy loss, opening the door to low-power electronics and, potentially, quantum computing that would be far faster than today’s computers. Their findings, which involved using a special mix of materials with magnetic and insulator properties, are published online in Nature Physics.
Those particles that can be in two places at the same time and are not just particles but also waves appear to move in even weirder ways than previously thought. Theoretical physicists at Georgia Tech applied extreme computing power for a week to predict the movements of fermions by including quantum optics, or light-like, ideas in their mathematical, theoretical modeling.
Hallgren is one of 11 distinguished faculty to be named to the 2018 Class of Vannevar Bush Faculty Fellows (VBFF) by the DoD. The program provides awards to top-tier engineers and scientists from U.S. universities to conduct “high-risk, high-payoff” research in areas of interest to the DoD over five years, with up to $3 million in support.
New spectroscopic technique measures heat in itty-bitty volumes that could reveal insights for electronics and energy technology.
Funded by a $1.6 million award from the National Science Foundation, the Institute for Molecular Engineering at the University of Chicago and Harvard University will head a new nationwide graduate student training program for quantum science and engineering.
A non-twisting laser beam moving through magnetized plasma turns into an optical vortex that traps, rotates, and controls microscopic particles, opening new frontiers in imaging.
U.S. Secretary of Energy Rick Perry announced that the Department of Energy (DOE) plans to invest up to $30 million over the next three years in Quantum Information Science (QIS).
Researchers from the Paul Sherrer Institute are studying a fascinating sample using neutrons at ORNL's Spallation Neutron Source. Their goal is to create an observable case of quantum spin ice, a bizarre magnetic state found in a special class of materials that could lead to advances in quantum computing.
Join physicist Roger Melko for a live webcast May 2 as he explores the application of machine learning and artificial intelligence to questions in fundamental physics.
While defects in a diamond are mostly undesirable, certain defects are a quantum physicist’s best friend, having the potential to store bits of information that could one day be used in a quantum computing system. Applied physicists at Cornell University have demonstrated a technique for engineering some of the key optical properties of those defects, providing a new tool for exploring quantum mechanics.
A group of researchers announced April 26 in Nature that they had managed to entangle perhaps the largest items yet, at a whopping 20 microns across—about the diameter of a single human hair.
A research team including U of A faculty has developed a method of detecting single photons using quantum dots. Single photon detection using quantum dots is an important element of new technology that could lead to faster and more secure data transfer.
Trans 1,3-butadiene, the smallest polyene, has challenged researchers over the past 40 years because of its complex excited-state electronic structure and its ultrafast dynamics. Butadiene remains the “missing link” between ethylene, which has only one double bond, and longer linear polyenes with three or more double bonds. Now, an experimental team has solved trans 1,3-butadiene’s electronic-structural dynamics. The researchers recently reported their findings in The Journal of Chemical Physics.
Quantum fluids may mix in very weird ways, according to new computer simulations of exotic states of matter known as Bose-Einstein condensates.
By Kerry Bennett Office of the Vice President for ResearchA new study published in Nature Physics describes how a team of scientists used a laser beam to gain access to long-lived sound waves in crystalline solids as the basis for a potentially new approach to information processing and storage. One of Northern Arizona University’s newest physicists, assistant professor Ryan Behunin, is a co-author of the study.
Physicists have identified a new state of matter whose structural order operates by rules more aligned with quantum mechanics than standard thermodynamic theory.
Researchers at the University of Vienna and the Austrian Academy of Sciences develop a new theoretical framework to describe how causal structures in quantum mechanics transform. They analyse under which conditions quantum mechanics allows the causal structure of the world to become "fuzzy". In this case, a fixed order of events is not possible.
An interdisciplinary, interdepartmental group of scientists at ORNL conducted fundamental physics studies at the nanoscale to support development of experimental platforms that will control dissipation in quantum systems and materials.
Fiber-optic cables package everything from financial data to cat videos into light, but when the signal arrives at your local data center, it runs into a silicon bottleneck. Instead of light, computers run on electrons moving through silicon-based chips, which are less efficient than photonics. To break through, scientists have been developing lasers that work on silicon. In this week’s APL Photonics, researchers write that the future of silicon-based lasers may be in quantum dots.
A potential revolution in device engineering could be underway, thanks to the discovery of functional electronic interfaces in quantum materials that can self-assemble spontaneously.
Join physicist Rob Moore for a live webcast Apr. 4 as he explores the subatomic realm of quantum materials, and explains how they may shape our technological future.
It defies conventional wisdom about semiconductors. It's baffling that it even works. It eludes physics models that try to explain it. This newly tested class of light-emitting semiconductors is so easy to produce from solution that it could be painted onto surfaces to light up our future in myriad colors shining from affordable lasers, LEDs, and even window glass.
Working together, Miller, Boehme, Vardeny and their colleagues have shown that an organic-based magnet can carry waves of quantum mechanical magnetization, called magnons, and convert those waves to electrical signals. It’s a breakthrough for the field of magnonics (electronic systems that use magnons instead of electrons) because magnons had previously been sent through inorganic materials that are more difficult to handle.
Columbia Engineers are the first to miniaturize dual-frequency combs by putting two frequency comb generators on a single millimeter-sized silicon-based chip. This could lead to low-cost, portable sensing and spectroscopy in the field in real-time. “This is the first time a dual comb has been generated on a single chip using a single laser,” says Electrical Engineering Prof. Michal Lipson who led the team with Applied Physics Prof. Alexander Gaeta. (Science Advances)
First known material capable of emitting single photons at room temperature and telecom wavelengths.
Current generated when light hits a material reveals electrons behaving like an elusive particle.
A team of researchers led by the Department of Energy’s Oak Ridge National Laboratory has demonstrated a new method for splitting light beams into their frequency modes, work that could spur advancements in quantum information processing and distributed quantum computing.
Quantum entanglement is a key feature of a quantum computer. Yet, how can we verify that a quantum computer indeed incorporates a large-scale entanglement? Using conventional methods is hard since they require a large number of repeated measurements. Aleksandra Dimić from the University of Belgrade and Borivoje Dakić from the Austrian Academy of Sciences and the University of Vienna have developed a novel method where in many cases even a single experimental run suffices to prove the presence of entanglement. Their surprising results will be published in the online open access journal npj Quantum Information of the Nature Publishing group.
Scientists at the U.S. Department of Energy’s Ames Laboratory have discovered a state of magnetism that may be the missing link to understanding the relationship between magnetism and unconventional superconductivity.
Join physicist Robert Spekkens for a live webcast Feb. 7 as he draws unexpected parallels between Egyptian hieroglyphs, Plato’s philosophy, and the puzzles of quantum theory.
Materials with controllable quantum mechanical properties are of great importance for the electronics and quantum computers of the future. However, finding or designing realistic materials that actually have these effects is a big challenge. Now, an international theory and computational team led by Cesare Franchini from the University of Vienna, find that multiple quantum interactions can coexist in a single real material and show how an electric field can be used to control them. The results of this research are now published in Nature Communications.
• ORNL research says quantum computers will use much less energy than current supercomputers, a potential cost benefit to equipment manufacturers and data centers • ORNL creates supertough renewable plastic with improved manufacturability. • A new ORNL system will help builders and home designers select the best construction materials for long-term moisture durability.
Scientists from three UK universities are to test one of the fundamental laws of physics as part of a major Europe-wide project awarded more than £3m in funding.
The magnetic noise caused by adsorbed oxygen molecules is “eating at” the phase stability of quantum bits, mitigating the noise is vital for future quantum computers.
A type of quantum dot that has been intensively studied in recent years can reproduce light in every colour and is very bright. An international research team including scientists from Empa has now discovered why this is the case. The quantum dots could someday be used in LEDs.
Machine learning and neural networks are the foundation of artificial intelligence and image recognition, but now they offer a bridge to see and recognize exotic insulating phases in quantum materials.
A revolutionary material harbors magnetism and massless electrons that travel near the speed of light—for future ultrasensitive, high-efficiency electronics and sensors.
Observed atomic dynamics helps explain bizarre flow without friction that has been puzzling scientists for decades.
Electrons are forced to the edge of the road on a thin sheet of tungsten ditelluride.
Tulane University professor Michael Mislove will help develop cutting-edge technology related to quantum computing.
Study identifies microbes to diagnose endometriosis without surgery; brain-inspired device can quickly classify data; neutrons “see” how water flows through fractured rock; new method could help with demand for electric vehicle charging stations; bio-based, shape-memory material could replace today’s conductors; novel approach for studying material’s magnetic behavior could boost quantum computing
So far, the search for catalysts even better than transition metals has been largely based on trial and error, and on the assumption that catalyzed reactions take place on step edges and other atomic defect sites of the metal crystals. An international research team has combined experiments using advanced infrared techniques with quantum theory to explore methane dissociation reactions in minute detail. They report their findings this week in The Journal of Chemical Physics.
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