Quantum Mechanics
Record-setting quantum motion  SCIENCE DAILY · 2 hours
Showcasing precise control at the quantum level, physicists have developed a method for making an ion (electrically charged atom) display exact quantities of quantum-level motion -- any specific amount up to 100 packets of energy or 'quanta,' more than five... more
Physicists create record-setting quantum motion  PHYS.ORG · 3 hours
Showcasing precise control at the quantum level, physicists at the National Institute of Standards and Technology (NIST) have developed a method for making an ion (electrically charged atom) display exact quantities of quantum-level motion—any specific amount up to... more
New record in lead-free halide double perovskites  PHYS.ORG · 3 hours
Illumination consumes more than 20 percent of electricity. Thus, finding an efficient, stable, single-phase warm white-light material is very important. Lead hybrid perovskites have drawn interest for excellent photoelectric performance and simple synthesis. Lead... more
New nanoantennas to improve ultra-fast wireless connections  PHYS.ORG · 6 hours
Researchers from the Nanophotonic Technology Centre (NTC) of the Polytechnic University of Valencia (UPV) have designed new silicon nanoantennas with direct applications in communication and data processing for the next generation of reconfigurable photonic... more
Quantum interference in the service of information technology  PHYS.ORG · 3 days
Scientists from the Faculty of Physics, University of Warsaw, in collaboration with the University of Oxford and NIST, have shown that quantum interference enables processing of large sets of data faster and... more
Quantum mechanical MRI simulations: Solving the matrix dimension problem  Science Magazine · 3 days
We propose a solution to the matrix dimension problem in quantum mechanical simulations of MRI (magnetic resonance imaging) experiments on complex molecules. This problem is very old; it arises when... more
Quantum interference enables constant-time quantum information processing  Science Magazine · 3 days
It is an open question how fast information processing can be performed and whether quantum effects can speed up the best existing solutions. Signal extraction, analysis, and compression in diagnostics, astronomy, chemistry, and broadcasting... more
Study unveils a new supersolid phase in dipolar Bose-Einstein condensates  PHYS.ORG · 3 days
Generally, matter exists in three distinct forms: as a solid, a liquid or a gas. Past physics research, however, has unveiled other curious states of matter, one of... more
Improving the signal-to-noise ratio in quantum chromodynamics simulations  SCIENCE DAILY · 4 days
A study describes a new technique for simulating particle ensembles that are 'large' (at least by the standards of particle physics). The technique improves the signal-to-noise ratio and thus the precision of... more
Quantum-state-selective electron recombination studies suggest enhanced abundance of primordial HeH+  Science Magazine · 4 days
The epoch of first star formation in the early universe was dominated by simple atomic and molecular species consisting mainly of two elements: hydrogen and helium. Gaining insight... more
Quantum scale anomaly and spatial coherence in a 2D Fermi superfluid  Science Magazine · 4 days
Quantum anomalies are violations of classical scaling symmetries caused by divergences that appear in the quantization of certain classical theories. Although they play a prominent role... more
String patterns in the doped Hubbard model  Science Magazine · 4 days
Understanding strongly correlated quantum many-body states is one of the most difficult challenges in modern physics. For example, there remain fundamental open questions on the phase diagram of the Hubbard model, which describes strongly... more
Improving the signal-to-noise ratio in quantum chromodynamics simulations  PHYS.ORG · 4 days
Over the last few decades, the exponential increase in computer power and accompanying increase in the quality of algorithms has enabled theoretical and particle physicists to perform more complex and precise simulations... more
200 times faster than ever before: The speediest quantum operation yet  SCIENCE DAILY · 5 days
A group of physicists at UNSW Sydney have built a super-fast version of the central building block of a quantum computer. The research is the milestone... more
Two-qubit gate: the speediest quantum operation yet  PHYS.ORG · 5 days
A group of scientists led by 2018 Australian of the Year Professor Michelle Simmons have achieved the first two-qubit gate between atom qubits in silicon—a major milestone on the team's quest to build an... more
Quantum photonics by serendipity  PHYS.ORG · 5 days
A photonic chip with no less than 128 tunable components proves to be a true computing "Swiss army knife" with a variety of applications. During her research on measuring light wavelengths using this photonic chip, Caterina Taballione of the University... more
The fun way to manipulate atoms  PHYS.ORG · 5 days
With their potential to perform calculations far beyond the reach of conventional supercomputers, machines harnessing certain quantum physics phenomena are expected to change the way the world solves complex problems. They will help scientists develop more... more
Researchers build transistor-like gate for quantum information processing – with qudits  PHYS.ORG · 6 days
Quantum information processing promises to be much faster and more secure than what today's supercomputers can achieve, but doesn't exist yet because its building blocks, qubits,... more
Limitation exposed in promising quantum computing material  PHYS.ORG · 6 days
Quantum computers promise to perform operations of great importance believed to be impossible for our technology today. Current computers process information via transistors carrying one of two units of information, either a 1 or... more
Limitation exposed in promising quantum computing material  SCIENCE DAILY · 6 days
Physicists have theorized that a new type of material, called a three-dimensional (3-D) topological insulator (TI), could be a candidate to create qubits for quantum computing due to its special properties. A study found... more
'Majorana Photons': New super-class of photons can travel with different wavefronts  PHYS.ORG · 6 days
Hailed as a pioneer by Photonics Media for his previous discoveries of supercontinuum and Cr tunable lasers, City College of New York Distinguished Professor of Science... more
Physicists find first possible 3D quantum spin liquid  SCIENCE DAILY · 7 days
There's no known way to prove a three-dimensional 'quantum spin liquid' exists, so physicists did the next best thing: They showed their crystals of cerium zirconium pyrochlore had the right stuff to... more
New 'Majorana photons' identified  SCIENCE DAILY · 7 days
Scientists have discovered a new super class of photons dubbed 'Majorana photons.' They could lead to enhanced information on quantum-level transition and imaging of the brain and its working. more
Physicists find first possible 3-D quantum spin liquid  PHYS.ORG · 1 week
There's no known way to prove a three-dimensional "quantum spin liquid" exists, so Rice University physicists and their collaborators did the next best thing: They showed their single crystals of cerium zirconium... more
NIST's quantum logic clock returns to top performance  PHYS.ORG · 1 week
The quantum logic clock—perhaps best known for showing you age faster if you stand on a stool—has climbed back to the leading performance echelons of the world's experimental atomic clocks. more
How the quest for a scalable quantum computer is helping fight cancer  PHYS.ORG · 1 week
Today, someone with breast cancer may undergo several rounds of chemotherapy and spend months in limbo before medical scans can show if that particular... more
Quantum logic clock returns to top performance  SCIENCE DAILY · 1 week
The quantum logic clock -- perhaps best known for showing you age faster if you stand on a stool -- has climbed back to the leading performance echelons of the world's experimental atomic clocks. more
Physicists find first possible 3D quantum spin liquid  nanowerk · 1 week
There?s no known way to prove a three-dimensional ?quantum spin liquid? exists, so physicists did the next best thing: They showed their single crystals of cerium zirconium pyrochlore had the right stuff... more
Physicists Unveil First-Ever Photo of Quantum Entanglement  SCI-NEWS.COM · 1 week
A team of physicists from the School of Physics and Astronomy at the University of Glasgow has captured an image of Bell... more
New two-dimensional materials: from their behavior and quantum properties to their industrial applications  nanowerk · 1 week
The NMAT2D-CM project will combine optics, theoretical physics and materials science to study 2D materials in order to develop devices for industrial... more
Scientists unveil the first-ever image of quantum entanglement  PHYS.ORG · 1 week
For the first time ever, physicists have managed to take a photo of a strong form of quantum entanglement called Bell entanglement—capturing visual evidence of an elusive phenomenon which a baffled Albert... more
Distinct conducting layer edge states in two-dimensional (2D) halide perovskite  Science Magazine · 1 week
Two-dimensional (2D) lead halide perovskite with a natural "multiple quantum well" (MQW) structure has shown great potential for optoelectronic applications. Continuing advancement requires a fundamental understanding of the... more
An electrically pumped phonon-polariton laser  Science Magazine · 1 week
We report a device that provides coherent emission of phonon polaritons, a mixed state between photons and optical phonons in an ionic crystal. An electrically pumped GaInAs/AlInAs quantum cascade structure provides intersubband gain into the polariton mode at... more
Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter  Science Magazine · 1 week
Optical cavities can enhance and control light-matter interactions. This level of control has recently been extended to the nanoscale with single emitter strong coupling... more
Universal quantized thermal conductance in graphene  Science Magazine · 1 week
The universal quantization of thermal conductance provides information on a state's topological order. Recent measurements revealed that the observed value of thermal conductance of the state is inconsistent with either Pfaffian or anti-Pfaffian model, motivating several... more
Imaging Bell-type nonlocal behavior  Science Magazine · 1 week
The violation of a Bell inequality not only attests to the nonclassical nature of a system but also holds a very unique status within the quantum world. The amount by which the inequality is violated often provides a good benchmark... more
Which is the perfect quantum theory?  SCIENCE DAILY · 1 week
For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers has now successfully deployed artificial neural networks for image analysis of quantum... more
Which is the perfect quantum theory?  PHYS.ORG · 1 week
For some phenomena in quantum many-body physics, several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University in the... more
A connection between quantum correlations and spacetime geometry  PHYS.ORG · 2 weeks
Researchers of the Academy explore the consequences of locality for measurements distributed in spacetime. Their article has now been published in the Nature journal Quantum Information. more
Coupling qubits to sound in a multimode cavity  PHYS.ORG · 2 weeks
In a recent study, researchers at the University of Colorado have resolved phonon Fock states in the spectrum of a superconducting qubit coupled to a multimode acoustic cavity. Fock states (or number... more
Quantum sensor breakthrough using naturally occurring vibrations in artificial atoms  SCIENCE DAILY · 2 weeks
A team of scientists have discovered a new method that could be used to build quantum sensors with ultra-high precision. more
Terahertz technology escapes the cold  SCIENCE DAILY · 2 weeks
Scientists have achieved the first realization of a terahertz quantum cascade laser operating without cryogenic cooling. This feat heralds the widespread use of these devices in practical applications. more
How to 'lock' heat in place using quantum mechanics  SCIENCE DAILY · 2 weeks
In a global first, scientists have demonstrated that heat energy can be manipulated by utilizing the quantum mechanical principle of anti-parity-time symmetry. Using this method, they were able to control... more
Solving problems on a quantum chessboard  PHYS.ORG · 2 weeks
Physicists at the University of Innsbruck are proposing a new model that could demonstrate the supremacy of quantum computers over classical supercomputers in solving optimization problems. In a recent paper, they demonstrate that just a few... more
Scientists discover how to 'lock' heat in place using quantum mechanics  PHYS.ORG · 2 weeks
A ground-breaking study conducted by researchers from the National University of Singapore (NUS) has revealed a method of using quantum mechanical wave theories to "lock" heat... more
Quantum sensor breakthrough using naturally occurring vibrations in artificial atoms  nanowerk · 2 weeks
Scientists have discovered a new method that could be used to build quantum sensors with ultra-high precision. more
Quantum sensor breakthrough using naturally occurring vibrations in artificial atoms  PHYS.ORG · 2 weeks
A team of scientists, led by the University of Bristol, have discovered a new method that could be used to build quantum sensors with ultra-high precision. more
Quantum chemistry on quantum computers  SCIENCE DAILY · 2 weeks
A new quantum algorithm has been implemented for identifying important physical quantities such as spin quantum numbers relevant to convoluted electronic wave functions on quantum computers, serving as tracking complex chemical reactions without exponential/combinatorial explosion, giving exact solutions... more
Characterizing the 'arrow of time' in open quantum systems  SCIENCE DAILY · 2 weeks
Even in the strange world of open quantum systems, the arrow of time points steadily forward -- most of the time. New experiments compare the forward and reverse trajectories of... more
'Connecting the dots' for quantum networks  SCIENCE DAILY · 2 weeks
Researchers have developed a novel technique that could enable new technologies that use properties of quantum physics for computing, communication and sensing, which may lead to 'neuromorphic' or brain-inspired computing. more
Characterizing the 'arrow of time' in open quantum systems  PHYS.ORG · 2 weeks
Even in the strange world of open quantum systems, the arrow of time points steadily forward—most of the time. New experiments conducted at Washington University in St. Louis compare the... more
'Connecting the dots' for quantum networks  PHYS.ORG · 2 weeks
Researchers at the U.S. Naval Research Laboratory (NRL) developed a new technique that could enable future advancements in quantum technology. more
Connecting the dots for quantum networks  nanowerk · 2 weeks
A new technique squeezes quantum dots to emit single photons with precisely the same color and with positions that can be less than a millionth of a meter apart. more
Quantum satellite combines art with science  PHYS.ORG · 2 weeks
A satellite built by the National University of Singapore (NUS) entered orbit in June carrying both a high-tech quantum device from the Centre for Quantum Technologies (CQT) and a quotation from a play written for the... more
Researchers combine quantum expertise to advance research in ultracold molecules  PHYS.ORG · 2 weeks
Leaders in the field of ultracold molecule research from Columbia and Harvard universities are teaming up to propel understanding of the quantum mechanics of chemical reactions. more
Localised excitons in 2-D materials for integrated quantum optics  PHYS.ORG · 2 weeks
NUS scientists have found that the oxygen interstitials in single-layer tungsten diselenide (WSe2) enable it to function as single photon emitters (SPEs) for quantum optical applications. more
Localized excitons in 2D materials for integrated quantum optics  nanowerk · 2 weeks
Scientists have found that the oxygen interstitials in single-layer tungsten diselenide enable it to function as single photon emitters for quantum optical applications. more
NUS quantum satellite combines art with science  PHYS.ORG · 2 weeks
A satellite built by the National University of Singapore (NUS) entered orbit in June carrying both a high-tech quantum device from the Centre for Quantum Technologies (CQT) and a quotation from a play written... more
Physicists Teleport Quantum Information inside Diamond  SCI-NEWS.COM · 3 weeks
A team of physicists at the Yokohama National University, Japan, has successfully demonstrated quantum teleportation — the remote exchange of quantum states — in... more
Neural nets to simulate molecular motion cast  SCIENCE DAILY · 3 weeks
New work is showing that artificial neural nets can be trained to encode quantum mechanical laws to describe the motions of molecules, supercharging simulations potentially across a broad range of fields. more
A new path to understanding second sound in Bose-Einstein condensates  SCIENCE DAILY · 3 weeks
There are two sound velocities in a Bose-Einstein condensate. In addition to the normal sound propagation there is second sound, which is a quantum phenomenon. Scientists have put... more
Generation and sampling of quantum states of light in a silicon chip  SCIENCE DAILY · 3 weeks
Scientists have found a promising new way to build the next generation of quantum simulators combining light and silicon micro-chips. more
Researchers cast neural nets to simulate molecular motion  PHYS.ORG · 3 weeks
New work from Los Alamos National Laboratory, the University of North Carolina at Chapel Hill, and the University of Florida is showing that artificial neural nets can be trained to encode quantum... more
Researchers cast neural nets to simulate molecular motion  nanowerk · 3 weeks
Machine learning allows quantum mechanics to be efficiently applied to molecular simulations for drug development, detonation physics and more. more
Redefining the limits of measurement accuracy  PHYS.ORG · 3 weeks
For centuries, humans have been expanding their understanding of the world through more and more precise measurement of light and matter. Today, quantum sensors achieve extremely accurate results. An example of this is the development of... more
A new path to understanding second sound in Bose-Einstein condensates  PHYS.ORG · 3 weeks
There are two sound velocities in a Bose-Einstein condensate. In addition to the normal sound propagation there is second sound, which is a quantum phenomenon. Scientists in Ludwig... more
Generation and sampling of quantum states of light in a silicon chip  PHYS.ORG · 3 weeks
Scientists from the University of Bristol and the Technical University of Denmark have found a promising new way to build the next generation of... more
MiLiQuant research project to develop new applications for quantum technology  NEWS MEDICAL · 3 weeks
Quantum technology is about to make the leap from scientific research to concrete applications. Contributing to this is the new MiLiQuant research project in which businesses and universities... more
Simulating quantum systems with neural networks  SCIENCE DAILY · 3 weeks
A new computational method, based on neural networks, can simulate open quantum systems with unprecedented versatility. more
Physicists use light waves to accelerate supercurrents, enable ultrafast quantum computing  PHYS.ORG · 3 weeks
Jigang Wang patiently explained his latest discovery in quantum control that could lead to superfast computing based on quantum mechanics: He mentioned light-induced superconductivity without energy... more
Physicists use light waves to accelerate supercurrents, enable ultrafast quantum computing  SCIENCE DAILY · 3 weeks
Scientists have discovered that terahertz light -- light at trillions of cycles per second -- can act as a control knob to accelerate supercurrents. That can... more
World's smallest MRI performed on single atoms  PHYS.ORG · 3 weeks
Researchers at the Center for Quantum Nanoscience (QNS) within the Institute for Basic Science (IBS) at Ewha Womans University have made a major scientific breakthrough by performing the world's smallest magnetic resonance imaging (MRI).... more
Theoretical physicists unveil one of the most ubiquitous and elusive concepts in chemistry  PHYS.ORG · 3 weeks
Oxidation numbers have so far eluded any rigorous quantum mechanical definition. A new SISSA study, published in Nature Physics, provides such a... more
Simulating quantum systems with neural networks  PHYS.ORG · 3 weeks
Even on the scale of everyday life, nature is governed by the laws of quantum physics. These laws explain common phenomena like light, sound, heat, or even the trajectories of balls on a pool table. But... more
Study unveils new supersymmetry anomalies in superconformal quantum field theories  PHYS.ORG · 3 weeks
Researchers at the University of Southampton and the Korea Institute for Advanced Study have recently showed that supersymmetry is anomalous in N=1 superconformal quantum field theories (SCFTs) with... more
Utrafast magnetism: Electron-phonon interactions examined at BESSY II  PHYS.ORG · 3 weeks
How fast can a magnet switch its orientation, and what are the microscopic mechanisms at play? An HZB team at BESSY II has, for the first time, experimentally assessed the principal microscopic... more
Researchers teleport information within a diamond  SCIENCE DAILY · 3 weeks
Researchers have teleported quantum information securely within the confines of a diamond. The study has big implications for quantum information technology -- the future of how sensitive information is shared and stored. more
New material shows high potential for quantum computing  nanowerk · 3 weeks
Researchers are getting closer to confirming the existence of an exotic quantum particle called Majorana fermion, crucial for fault-tolerant quantum computing - the kind of quantum computing that addresses errors during its... more
New material shows high potential for quantum computing  PHYS.ORG · 3 weeks
A joint team of scientists at the University of California, Riverside, and the Massachusetts Institute of Technology is getting closer to confirming the existence of an exotic quantum particle called Majorana fermion,... more
Honeywell to build Canadian quantum encryption satellite  SPACE NEWS · 3 weeks
The Canadian government will launch a new satellite in 2022 to demonstrate the use of quantum technology for protecting commercial and national... more
Optimal quantum computation linked to gravity  PHYS.ORG · 3 weeks
Information and gravity may seem like completely different things, but one thing they have in common is that they can both be described in the framework of geometry. Building on this connection, a new paper suggests... more
Researchers teleport information within a diamond  PHYS.ORG · 3 weeks
Researchers from the Yokohama National University have teleported quantum information securely within the confines of a diamond. The study has big implications for quantum information technology—the future of sharing and storing sensitive information. The researchers published... more
Experiment reverses the direction of heat flow  SCIENCE DAILY · 4 weeks
A study used quantum correlations to make heat flow from a colder to a hotter medium without adding external energy, affording a deeper understanding of the second law of thermodynamics. more
Generation of extreme-ultraviolet beams with time-varying orbital angular momentum  Science Magazine · 4 weeks
Light fields carrying orbital angular momentum (OAM) provide powerful capabilities for applications in optical communications, microscopy, quantum optics, and microparticle manipulation. We introduce a property of light beams, manifested as... more
Giant vortex clusters in a two-dimensional quantum fluid  Science Magazine · 4 weeks
Adding energy to a system through transient stirring usually leads to more disorder. In contrast, point-like vortices in a bounded two-dimensional fluid are predicted to reorder above a certain energy, forming persistent... more
The observation of topologically protected magnetic quasiparticles  SCIENCE DAILY · 4 weeks
A team of researchers conducted an in-depth study of magnetic quasiparticles called 'triplons.' The team conducted the study with a low-dimensional quantum magnet, Ba2CuSi2O6Cl2, using neutron inelastic scattering by AMATERAS at J-PARC. Their findings... more
Experiment reverses the direction of heat flow  nanowerk · 4 weeks
Scientists used quantum correlations to make heat flow from a colder to a hotter medium without adding external energy, affording a deeper understanding of the second law of thermodynamics. more
Perfect quantum portal emerges at exotic interface  nanowerk · 4 weeks
A junction between an ordinary metal and a special kind of superconductor has provided a robust platform to observe Klein tunneling. more
Physicists Observe Exotic Quantum States in Double-Layer Graphene  SCI-NEWS.COM · 4 weeks
An international team of physicists from the United States and Japan has demonstrated a series of fractional quantum Hall effect... more
Building a bridge to the quantum world  PHYS.ORG · 4 weeks
Entanglement is one of the main principles of quantum mechanics. Physicists from Professor Johannes Fink's research group at the Institute of Science and Technology Austria (IST Austria) have found a way to use a... more
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How the quest for a scalable quantum computer is helping fight cancer
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Characterizing the 'arrow of time' in open quantum systems
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