Quantum Mechanics
Murray Gell-Mann gave structure to the subatomic world  SCIENCE-NEWS · 22 hours
Best known for his quarks, the preeminent theoretical physicist was also a complexity pioneer more
A high-spin ground-state donor-acceptor conjugated polymer  Science Magazine · 1 day
Interest in high-spin organic materials is driven by opportunities to enable far-reaching fundamental science and develop technologies that integrate light element spin, magnetic, and quantum functionalities. Although extensively studied, the intrinsic instability of these materials complicates... more
Experimental investigation of performance differences between coherent Ising machines and a quantum annealer  Science Magazine · 1 day
Physical annealing systems provide heuristic approaches to solving combinatorial optimization problems. Here, we benchmark two types of annealing machines—a quantum annealer built... more
Physicists Determine Geometry of Electrons in Quantum Dots  SCI-NEWS.COM · 1 day
A team of physicists at the University of Basel has experimentally mapped out the shape and orientation of electrons trapped... more
Study investigates how spin-orbit interaction protects Majorana nanowires  PHYS.ORG · 1 day
Researchers at Delft University of Technology have recently carried out a study investigating spin-orbit interaction in Majorana nanowires. Their study, published in Physical Review Letters, is the first to clearly show the... more
Quantum computing boost from vapor stabilizing technique  SCIENCE DAILY · 1 day
A technique to stabilize alkali metal vapor density using gold nanoparticles, so electrons can be accessed for applications including quantum computing, atom cooling and precision measurements, has now been patented. more
Plumbene, graphene's latest cousin, realized on a 'nano water cube'  nanowerk · 1 day
Scientists have created 'plumbene', a 2D-honeycomb sheet of lead atoms. Plumbene has the largest spin-orbit interaction of any Group 14 elemental 2D material, potentially making it a robust... more
Quantum computing boost from vapour stabilising technique  PHYS.ORG · 1 day
A technique to stabilise alkali metal vapour density using gold nanoparticles, so electrons can be accessed for applications including quantum computing, atom cooling and precision measurements, has been patented by scientists at the University... more
Geometry of an electron determined for the first time  SCIENCE DAILY · 2 days
Physicists are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an... more
Interactive quantum chemistry in virtual reality  PHYS.ORG · 2 days
Scientists from the University of Bristol's Intangible Realities Laboratory (IRL) and ETH Zurich have used virtual reality and artificial intelligence algorithms to learn the details of chemical change. more
New searches for supersymmetry presented by ATLAS experiment  PHYS.ORG · 2 days
The Standard Model is a remarkably successful but incomplete theory. Supersymmetry (SUSY) offers an elegant solution to the Standard Model's limitations, extending it to give each particle a heavy "superpartner" with different... more
The geometry of an electron determined for the first time  PHYS.ORG · 2 days
Physicists at the University of Basel have shown for the first time how a single electron looks in an artificial atom. A newly developed method enables them to... more
New collider concept would take quantum theories to an extreme  PHYS.ORG · 2 days
A new idea for smashing beams of elementary particles into one another could reveal how light and matter interact under extreme conditions that may exist on the surfaces... more
Quantum rebar: Quantum dots enhance stability of solar-harvesting perovskite crystals  SCIENCE DAILY · 3 days
Engineering researchers have combined two emerging technologies for next-generation solar power -- and discovered that each one helps stabilize the other. The resulting hybrid material is a major... more
Quantum rebar: Quantum dots enhance stability of solar-harvesting perovskite crystals  PHYS.ORG · 3 days
University of Toronto Engineering researchers have combined two emerging technologies for next-generation solar power—and discovered that each one helps stabilize the other. The resulting hybrid material is a... more
A light matter: Understanding the Raman dance of solids  SCIENCE DAILY · 3 days
Scientists investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum interferometry. more
Quantum rebar: Quantum dots enhance stability of solar-harvesting perovskite crystals  nanowerk · 3 days
Researchers demonstrate that perovskite crystals and quantum dots working together can increase stability of solar materials. more
Physicists propose a second level of quantization for quantum Shannon theory  PHYS.ORG · 3 days
Information theory, which was developed by Claude Shannon starting in the late 1940s, deals with questions such as how quickly information can be sent over a... more
Quantum interferometry reveals the chosen pathway of coherent phonon generation  PHYS.ORG · 3 days
Scientists at Tokyo Institute of Technology and Keio University investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser... more
Quantum communication: making two from one  PHYS.ORG · 4 days
In the future, quantum physics could become the guarantor of secure information technology. To achieve this, individual particles of light—photons—are used for secure transmission of data. Findings by physicists from the Max Planck Institute for Solid... more
New Josephson junction study links quantum theory to experiment  PHYS.ORG · 4 days
The Josephson junction is one of the most important elements in turning quantum phenomena into usable technology. more
There's a Brand-New Kilogram, And It's Based on Quantum Physics  SPACE.COM · 4 days
The kilogram isn't a thing anymore. Instead, it's an abstract idea about light and energy and fundamental universal constants. more
There's a Brand-New Kilogram, And It's Based on Quantum Physics  LIVE SCIENCE · 5 days
The kilogram isn't a thing anymore. Instead, it's an abstract idea about light and energy and fundamental universal constants. more
Scientists develop polariton nano-laser operating at room temperature  nanowerk · 5 days
Researchers demonstrate a room temperature polariton nano-laser, providing the crucial path of related research such as polariton physics at the nanoscale and also applications in quantum information systems. more
Scientists develop polariton nano-laser operating at room temperature  PHYS.ORG · 5 days
A room temperature polariton nano-laser has been demonstrated, along with several related research findings, regarding topics such as polariton physics at the nanoscale and also applications in quantum information systems. The research... more
Quantum cloud computing with self-check  PHYS.ORG · 5 days
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller... more
Manipulating atoms one at a time with an electron beam  nanowerk · 6 days
Researchers have a method that can reposition atoms with a highly focused electron beam and control their exact location and bonding orientation. The finding could ultimately lead to... more
Correlation between scale-invariant normal-state resistivity and superconductivity in an electron-doped cuprate  Science Magazine · 1 week
An understanding of the normal state in the high-temperature superconducting cuprates is crucial to the ultimate understanding of the long-standing problem of the origin of the... more
Selective trapping of hexagonally warped topological surface states in a triangular quantum corral  Science Magazine · 1 week
The surface of a three-dimensional topological insulator (TI) hosts two-dimensional massless Dirac fermions (DFs), the gapless and spin-helical nature of which leads... more
On-demand photonic entanglement synthesizer  Science Magazine · 1 week
Quantum information protocols require various types of entanglement, such as Einstein-Podolsky-Rosen, Greenberger-Horne-Zeilinger, and cluster states. In optics, on-demand preparation of these states has been realized by squeezed light sources, but such experiments require different optical circuits for different entangled states,... more
Macroscopic electron quantum coherence in a solid-state circuit  PHYS.ORG · 1 week
A team of researchers at the Centre de Nanosciences et de Nanotechnologies (C2N, CNRS/Univ. Paris-Saclay) has experimentally achieved the coherent propagation of electrons in circuits over macroscopic distances through a novel nano-engineering... more
Quantum gas microscopy of Rydberg macrodimers  Science Magazine · 1 week
The subnanoscale size of typical diatomic molecules hinders direct optical access to their constituents. Rydberg macrodimers—bound states of two highly excited Rydberg atoms—feature interatomic distances easily exceeding optical wavelengths. We report the direct microscopic observation and... more
Researchers shed new light on atomic 'wave function'  nanowerk · 1 week
High-res technique improves ability to measure a quantum system's essential information. more
Atomic 'wave function': Research sheds new light  SCIENCE DAILY · 1 week
Physicists have demonstrated a new way to obtain the essential details of an isolated quantum system through direct observation. The method gives information about the likelihood of finding atoms at specific locations in the... more
Researchers shed new light on atomic 'wave function'  PHYS.ORG · 1 week
Physicists have demonstrated a new way to obtain the essential details that describe an isolated quantum system, such as a gas of atoms, through direct observation. The new method gives information about... more
Scientists develop ultrasensitive organic phototransistors based on novel hybrid-layered architecture  PHYS.ORG · 1 week
Organic phototransistors (OPTs) are widely used in environmental/health monitoring, quantum communication, chemical/biomedical sensing, remote control, surveillance, and image sensors since they are lightweight, low-cost, highly efficient and environmentally... more
Quantum cloud computing with self-check  SCIENCE DAILY · 1 week
With a quantum coprocessor in the cloud, physicists have opened the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. In a new study, researchers report how they simulated particle physics phenomena... more
Reprogrammable satellite takes shape  ESA · 1 week
The payload and platform of the first European satellite that can be completely reprogrammed after launch have been successfully joined together. The assembly of Eutelsat Quantum took place... more
Capturing single photons to explore fundamental physics and quantum information science  PHYS.ORG · 1 week
Quantum optics, where light and matter interactions are examined at the microscopic level, has earned Nobel prizes—including three awarded since 2001—for some of science's biggest names.... more
Holographic imaging of electromagnetic fields using electron-light quantum interference  PHYS.ORG · 1 week
In conventional holography a photographic film can record the interference pattern of monochromatic light scattered from the object to be imaged with a reference beam of un-scattered light. Scientists can... more
Quantum physicists shining new light on cave art  PHYS.ORG · 1 week
Leslie Van Gelder, a well-known American-born archeologist has been working with Dr. Harald Schwefel, and other physicists at Otago University to develop a lamp that mimics the flickering torch light that paleolithic... more
Digital quantum simulators can be astonishingly robust  PHYS.ORG · 1 week
In solving quantum-physical problems in many-body systems, such as predicting material properties, conventional computers rapidly reach the limits of their capacity. Digital quantum simulators might help, but until now they are drastically limited to... more
Accelerating quantum technologies with materials processing at the atomic scale  nanowerk · 2 weeks
An emerging suite of information technologies based on fundamental quantum physics has been given a boost by researchers, who have invented a method to engineer single atomic defects... more
Accelerating quantum technologies with materials processing at the atomic scale  PHYS.ORG · 2 weeks
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from... more
Accelerating quantum technologies with materials processing at the atomic scale  SCIENCE DAILY · 2 weeks
An emerging suite of information technologies based on fundamental quantum physics has been given a boost by researchers who have invented a method to engineer single atomic defects... more
Generating high-quality single photons for quantum computing  PHYS.ORG · 2 weeks
MIT researchers have designed a way to generate, at room temperature, more single photons for carrying quantum information. The design, they say, holds promise for the development of practical quantum computers. more
Quantum world-first: Researchers reveal accuracy of two-qubit calculations in silicon  SCIENCE DAILY · 2 weeks
Engineers have measured the accuracy of silicon two-qubit operations for the first time -- and their results confirm the promise of silicon for quantum computing. more
Quantum world-first—researchers reveal accuracy of two-qubit calculations in silicon  PHYS.ORG · 2 weeks
For the first time ever, researchers have measured the fidelity—that is, the accuracy—of two-qubit logic operations in silicon, with highly promising results that will enable scaling up to a full-scale... more
Photon superbunching from a generic tunnel junction  Science Magazine · 2 weeks
Generating time-correlated photon pairs at the nanoscale is a prerequisite to creating highly integrated optoelectronic circuits that perform quantum computing tasks based on heralded single photons. Here, we demonstrate fulfilling this requirement with a... more
A dance of two: tailoring interactions between remote fluids of excitons  PHYS.ORG · 2 weeks
An international collaboration involving European, Israeli, and US scientists realize for the first time strong and directionally dependent interactions in quantum liquids of excitons, which contrasts... more
Computing faster with quasi-particles  nanowerk · 2 weeks
Researchers have made an important step on the road to topological quantum computers. Whereas previous experiments in this field have mostly focused on one-dimensional systems, the team succeeded in going to two-dimensional systems. more
Designer defects in nanodiamonds  nanowerk · 2 weeks
New method for creating color centers - a pathway to quantum materials. more
Generating multiphoton quantum states on silicon  PHYS.ORG · 2 weeks
In a recent study now published in Light: Science & Applications, Ming Zhang, Lan-Tian Feng and an interdisciplinary team of researchers at the departments of quantum information, quantum physics and modern optical instrumentation in China, detailed... more
Discrete energy levels without confinement – a new quantum trick  PHYS.ORG · 2 weeks
Nanostructures can be designed such a way that the quantum confinement allows only certain electron energy levels. Researchers from IMDEA Nanociencia, UAM and ICMM-CSIC have, for the first... more
Researchers violate Bell's inequality with remotely connected superconducting qubits  PHYS.ORG · 2 weeks
The efficient generation of entanglement between remote quantum nodes is a crucial step in securing quantum communications. In past research, entanglement has often been achieved using a number of different... more
S-money: Ultra-secure form of virtual money proposed  PHYS.ORG · 3 weeks
A new type of money that allows users to make decisions based on information arriving at different locations and times, and that could also protect against attacks from quantum computers, has been proposed by... more
Quantum computing with graphene plasmons  PHYS.ORG · 3 weeks
A novel material that consists of a single sheet of carbon atoms could lead to new designs for optical quantum computers. Physicists from the University of Vienna and the Institute of Photonic Sciences in Barcelona have shown that... more
New all-fiber device simplifies free-space based quantum key distribution  SCIENCE DAILY · 3 weeks
Researchers have developed a simple and stable device to generate the quantum states necessary for quantum key distribution. The device could make it more practical to develop a global data... more
Quantum computing with graphene plasmons  SCIENCE DAILY · 3 weeks
A novel material that consists of a single sheet of carbon atoms could lead to new designs for optical quantum computers. Physicists have shown that tailored graphene structures enable single photons to interact with each other. more
New all-fiber device simplifies free-space based quantum key distribution  PHYS.ORG · 3 weeks
Researchers have developed a simple and stable device to generate the quantum states necessary for quantum key distribution. The device could make it more practical to develop a global data... more
High-Velocity Charged Particles Emit Cherenkov Radiation in Quantum Vacuum  SCI-NEWS.COM · 3 weeks
According to new research published in the journal Physical Review Letters, charged particles traveling through empty space can... more
First demonstration of antimatter wave interferometry  PHYS.ORG · 3 weeks
Matter waves constitute a crucial feature of quantum mechanics, in which particles have wave properties in addition to particle characteristics. This wave-particle duality was postulated in 1924 by the French physicist Louis de Broglie. The existence... more
New holographic technique opens the way for quantum computation  PHYS.ORG · 3 weeks
Photography measures how much light of different color hits the photographic film. However, light is also a wave, and is therefore characterized by the phase. Phase specifies the position of... more
Quantum computing with graphene plasmons  nanowerk · 3 weeks
In their proposed graphene quantum logic gate, scientists show that if single plasmons are created in nanoribbons made out of graphene, two plasmons in different nanoribbons can interact through their electric fields. more
Medical News Today: Using coal as a potent antioxidant  MNT · 3 weeks
According to innovative new research, quantum dots derived from coal could lessen the impact of strokes, heart attacks, and brain injuries. more
Researchers take a bottom-up approach to synthesizing nanodiamonds for bioimaging, quantum computing  nanowerk · 3 weeks
Researchers used extremely high pressure and temperature to dope nanodiamonds. They used this approach to dope nanodiamonds with silicon, causing the diamonds to glow... more
Antimatter keeps with quantum theory. It’s both particle and wave  SCIENCE-NEWS · 3 weeks
A new variation of the classic double-slit experiment confirms that antimatter, like normal matter, has wave-particle duality. more
Anti-Stokes excitation of solid-state quantum emitters for nanoscale thermometry  Science Magazine · 3 weeks
Color centers in solids are the fundamental constituents of a plethora of applications such as lasers, light-emitting diodes, and sensors, as well as the foundation of advanced quantum information and... more
First demonstration of antimatter wave interferometry  Science Magazine · 3 weeks
Interference of matter waves is at the heart of quantum physics and has been observed for a wide range of particles from electrons to complex molecules. Here, we demonstrate matter wave interference of single positrons using... more
High-pressure, high-temperature molecular doping of nanodiamond  Science Magazine · 3 weeks
The development of color centers in diamond as the basis for emerging quantum technologies has been limited by the need for ion implantation to create the appropriate defects. We present a versatile method to dope diamond... more
Holographic imaging of electromagnetic fields via electron-light quantum interference  Science Magazine · 3 weeks
Holography relies on the interference between a known reference and a signal of interest to reconstruct both the amplitude and the phase of that signal. With electrons, the extension of... more
Bottom-up approach can synthesize microscopic diamonds for bioimaging, quantum computing  PHYS.ORG · 3 weeks
Scientists are excited about diamonds—not the types that adorn jewelry, but the microscopic variety that are less than the width of a human hair. These so-called "nanodiamonds" are... more
A novel technique that uses quantum light to measure temperature at the nanoscale  PHYS.ORG · 3 weeks
Being able to measure, and monitor, temperatures and temperature changes at miniscule scales—inside a cell or in micro and nano-electronic components—has the... more
Quantum sensor for photons  SCIENCE DAILY · 3 weeks
A photodetector converts light into an electrical signal, causing the light to be lost. Researchers have now built a quantum sensor that can measure light particles non-destructively. It can be used to further investigate the quantum properties of light. more
Quantum sensor for photons  PHYS.ORG · 3 weeks
A photodetector converts light into an electrical signal, causing the light to be lost. Researchers led by Tracy Northup at the University of Innsbruck have now built a quantum sensor that can measure light particles non-destructively. It can be used... more
A quantum leap in particle simulation  PHYS.ORG · 3 weeks
A group of scientists at the Department of Energy's Fermilab has figured out how to use quantum computing to simulate the fundamental interactions that hold together our universe. more
Strongly correlated quantum walks with a 12-qubit superconducting processor  Science Magazine · 3 weeks
Quantum walks are the quantum analogs of classical random walks, which allow simulating large-scale quantum many-body systems and realizing universal quantum computation without time-dependent control. We experimentally demonstrate quantum walks... more
Electrical suppression of all nonradiative recombination pathways in monolayer semiconductors  Science Magazine · 3 weeks
Defects in conventional semiconductors substantially lower the photoluminescence (PL) quantum yield (QY), a key metric of optoelectronic performance that directly dictates the maximum device efficiency. Two-dimensional transition-metal dichalcogenides... more
Machine Learning paves the way for next-level quantum sensing  nanowerk · 3 weeks
Scientists have reached new heights of sophistication in detecting magnetic fields with extreme sensitivity at room temperature by combining machine learning with a quantum sensor. more
Machine learning paves the way for next-level quantum sensing  PHYS.ORG · 3 weeks
Researchers at the University of Bristol have reached new heights of sophistication in detecting magnetic fields with extreme sensitivity at room temperature by combining machine learning with a quantum sensor. more
Phonon-mediated quantum state transfer and remote qubit entanglement  PHYS.ORG · 3 weeks
Quantum information platforms are based on qubits that talk to each other and photons (optical and microwave) are the carrier of choice—to date, to transfer quantum states between qubits. However, in some... more
Scientists connect quantum bits with sound over record distances  PHYS.ORG · 3 weeks
Scientists with the Institute for Molecular Engineering at the University of Chicago have made two breakthroughs in the quest to develop quantum technology. In one study, they entangled two quantum... more
An atom in a cavity extracts highly pure single photons from weak laser light  PHYS.ORG · 4 weeks
Quantum physicists can now distil a kind of photon schnapps. When spirits are distilled, the alcohol content increases relative to... more
A science-themed escape room gives the brain a workout  SCIENCE-NEWS · 4 weeks
Quantum physicist Paul Kwiat reveals what it takes do well in LabEscape, his science-themed escape room. more
Physicists set a new record of quantum memory efficiency  PHYS.ORG · 4 weeks
Like memory in conventional computers, quantum memory components are essential for quantum computers—a new generation of data processors that exploit quantum mechanics and can overcome the limitations of classical computers.... more
Chemists manipulate the quantum states of gold nanoclusters  SCIENCE DAILY · 4 weeks
Researchers have found a way to control the lifetime of the quantum states of gold nanoclusters by three orders of magnitude, which could lead to improvements in solar cell and photocatalysis technologies. more
Chemists manipulate the quantum states of gold nanoclusters  PHYS.ORG · 4 weeks
Researchers from Carnegie Mellon University's Department of Chemistry have found a way to control the lifetime of the quantum states of gold nanoclusters by three orders of magnitude, which could lead to... more
Chemists manipulate the quantum states of gold nanoclusters  nanowerk · 4 weeks
Scientists have found a way to control the lifetime of the quantum states of gold nanoclusters by three orders of magnitude, which could lead to improvements in solar cell and photocatalysis technologies. more
Remote connections? Detangling entanglement in quantum physics  PHYS.ORG · 4 weeks
Quantum computers, quantum cryptography and quantum (insert name here) are often in the news these days. Articles about them inevitably refer to entanglement, a property of quantum physics that makes all these magical devices... more
Coffee machine helps physicists to make more efficient ion traps  PHYS.ORG · 4 weeks
Scientists from ITMO University have developed and applied a new method for analyzing the electromagnetic field inside ion traps. For the first time, they explained the field deviations... more
Surprising quantum effect in hard disk drive material  SCIENCE DAILY · 4 weeks
Scientists have further explored a new effect that enhances their ability to control the direction of electron spin in certain materials. Their discovery may lead to more powerful and energy-efficient materials for... more
Quantum EntanglementQuantum ComputersTheory of EverythingString Theory
Quantum world-first: Researchers reveal accuracy of two-qubit calculations in silicon
SCIENCE DAILY
New holographic technique opens the way for quantum computation
PHYS.ORG
How a Last-Ditch Hack Led to the Invention of Quantum Mechanics
SPACE.COM
Remote connections? Detangling entanglement in quantum physics
PHYS.ORG
Fresh