Quantum Mechanics
New optical device brings quantum computing a step closer  PHYS.ORG · 19 hours
An international team of researchers has taken a big step closer to creating an optical quantum computer, which has the potential to engineer new drugs and optimise energy-saving methods. more
Milestone for bERLinPro: Photocathodes with high quantum efficiency  PHYS.ORG · 22 hours
Teams from the accelerator physics and the SRF groups at HZB are developing a superconducting linear accelerator featuring energy recovery (Energy Recovery Linac) as part of the bERLinPro project. It accelerates an... more
A new 'spin' on kagome lattices  SCIENCE DAILY · 3 days
The kagome ferromagnet Fe3Sn2 exhibits an electronic state that couples unusually strongly to an applied magnetic field that can be rotated to point in any direction of a 3-dimensional space, revealing that magnetization drives -- in... more
A new 'spin' on kagome lattices  PHYS.ORG · 4 days
Like so many targets of scientific inquiry, the class of material referred to as the kagome magnet has proven to be a source of both frustration and amazement. Further revealing the quantum properties of the kagome... more
Scientists exchanged quantum information on daylight in a free-space quantum key distribution  SCIENCE DAILY · 4 days
Scientists have reported a successful free-space quantum key distribution (QKD) in daylight with the self-developed polarization encoding chip for the first time. QKD is... more
Harnessing the power of 'spin orbit' coupling in silicon: Scaling up quantum computation  PHYS.ORG · 4 days
Australian scientists have investigated new directions to scale up qubits—utilising the spin-orbit coupling of atom qubits—adding a new suite of tools to... more
Integrated photonic platform for quantum information with continuous variables  Science Magazine · 4 days
Integrated quantum photonics provides a scalable platform for the generation, manipulation, and detection of optical quantum states by confining light inside miniaturized waveguide circuits. Here, we show the generation, manipulation,... more
A quantum machine learning algorithm based on generative models  Science Magazine · 4 days
Quantum computing and artificial intelligence, combined together, may revolutionize future technologies. A significant school of thought regarding artificial intelligence is based on generative models. Here, we propose a general quantum... more
Scientists enter unexplored territory in superconductivity search  SCIENCE DAILY · 4 days
Scientists mapping out the quantum characteristics of superconductors -- materials that conduct electricity with no energy loss -- have entered a new regime. Using newly connected tools, they've uncovered previously inaccessible details of the... more
Molecularly thin hybrid perovskite for advanced optoelectronic applications  PHYS.ORG · 4 days
NUS scientists have discovered that the light emission properties of molecularly thin two-dimensional (2-D) hybrid perovskite can be tuned in a highly reversible way for ultrathin optoelectronic applications. A highly efficient photodetector... more
Atoms stand in for electrons in system for probing high-temperature superconductors  MIT · 5 days
Using new “quantum emulator,” physicists can observe individual atoms moving through these materials, and measure their speed. more
Bad metallic transport in a cold atom Fermi-Hubbard system  Science Magazine · 5 days
Strong interactions in many-body quantum systems complicate the interpretation of charge transport in such materials. To shed light on this problem, we study transport in a clean quantum system: ultracold... more
Using quantum entanglement to study proteins  PHYS.ORG · 5 days
For the first time, a University of Michigan chemist has used quantum entanglement to examine protein structures, a process that requires only a very small number of photons of light. more
Scientists enter unexplored territory in superconductivity search  PHYS.ORG · 5 days
Scientists mapping out the quantum characteristics of superconductors—materials that conduct electricity with no energy loss—have entered a new regime. Using newly connected tools named OASIS at the U.S. Department of Energy's Brookhaven National Laboratory,... more
Graphene may one day be used to test for ALS  NEWS MEDICAL · 5 days
The wonders of graphene are numerous -- it can enable flexible electronic components, enhance solar cell capacity, filter the finest subatomic particles and revolutionize batteries. more
Using graphene to detect ALS, other neurodegenerative diseases  PHYS.ORG · 6 days
The wonders of graphene are numerous—it can enable flexible electronic components, enhance solar cell capacity, filter the finest subatomic particles and revolutionize batteries. Now, the "supermaterial" may one day be used to... more
Brief reflections from a plasma mirror  PHYS.ORG · 6 days
When a dense sheet of electrons is accelerated to almost the speed of light, it acts as a reflective surface. Such a 'plasma mirror' can be used to manipulate light. Now an international team of physicists... more
Plasmonic quantum size effects in silver nanoparticles are dominated by interfaces and local environments  PHYS.ORG · 6 days
When metallic dimensions are reduced to the nanoscale, a phenomenon termed localized surface-plasmon resonance (LSPR) appears due to electron oscillations,... more
New building block in quantum computing demonstrated  SCIENCE DAILY · 6 days
Researchers have demonstrated a new level of control over photons encoded with quantum information. The team's experimental system allows them to manipulate the frequency of photons to bring about superposition, a state that enables... more
Researchers demonstrate new building block in quantum computing  PHYS.ORG · 7 days
Researchers with the Department of Energy's Oak Ridge National Laboratory have demonstrated a new level of control over photons encoded with quantum information. Their research was published in Optica. more
Colloidal quantum dots make LEDs shine bright in the infrared  PHYS.ORG · 7 days
The ideal optoelectronic semiconductor material would be a strong light emitter and an efficient charge conductor to allow for electrical injection in devices. These two conditions, when met,... more
Colloidal quantum dots make LEDs shine bright in the infrared  SCIENCE DAILY · 1 week
A group of researchers report on the development of a colloidal quantum-dot light emitting diode with unprecedented quantum and power conversion efficiencies in the infrared range. The study... more
New quantum materials could take computing devices beyond the semiconductor era  SCIENCE DAILY · 1 week
Scientists in industry and academia are looking for new materials to succeed highly successful semiconductor transistors. Scientists have hit on a very promising post-transistor technology: multiferroics,... more
Colloidal quantum dots make LEDs shine bright in the infrared  nanowerk · 1 week
Researchers have developed CQD infrared emitting LEDs, which have achieved unprecedented values in the infrared range, with an external quantum efficiency of 7.9% and a power conversion efficiency... more
New quantum materials could take computing devices beyond the semiconductor era  PHYS.ORG · 1 week
Researchers from Intel Corp. and the University of California, Berkeley, are looking beyond current transistor technology and preparing the way for a new type of memory... more
Will light be the basis for quantum computing?  SCIENCE DAILY · 1 week
Using a compact optical platform that exploits the quantum characteristics of light, scientists are one step closer to realizing the first powerful photonic quantum computer. The researchers revealed to have generated a... more
Great strides for carbon capture using earth-abundant elements as photocatalytic system  PHYS.ORG · 1 week
Researchers at Tokyo Institute of Technology have designed a CO2 reduction method based only on commonly occurring elements. Achieving a 57 percent overall quantum yield of... more
Great strides for carbon capture using earth-abundant elements as photocatalytic system  SCIENCE DAILY · 1 week
Researchers at Tokyo Tech have designed a CO2 reduction method based only on commonly occurring elements. Achieving a 57 percent overall quantum yield of CO2 reduction... more
Cavity quantum-electrodynamical polaritonically enhanced electron-phonon coupling and its influence on superconductivity  Science Magazine · 2 weeks
So far, laser control of solids has been mainly discussed in the context of strong classical nonlinear light-matter coupling in a pump-probe framework. Here, we propose... more
Qubit parity measurement by parametric driving in circuit QED  Science Magazine · 2 weeks
Multiqubit parity measurements are essential to quantum error correction. Current realizations of these measurements often rely on ancilla qubits, a method that is sensitive to faulty two-qubit gates and that... more
Probing quantum physics on a macroscopic scale  PHYS.ORG · 2 weeks
Why does quantum mechanics work so well for microscopic objects, yet macroscopic objects are described by classical physics? This question has bothered physicists since the development of quantum theory more than 100 years ago.... more
Artificial magnetic field produces exotic behavior in graphene sheets  PHYS.ORG · 2 weeks
A simple sheet of graphene has noteworthy properties due to a quantum phenomenon in its electron structure called Dirac cones. The system becomes even more interesting if it comprises two... more
Scientists find a way to enhance the performance of quantum computers  PHYS.ORG · 2 weeks
USC scientists have demonstrated a theoretical method to enhance the performance of quantum computers, an important step to scale a technology with potential to solve some... more
An important step towards completely secure quantum communication networks  SCIENCE DAILY · 2 weeks
The quest for a secure information network is on. Researchers have recently succeeded in boosting the storage time of quantum information, using a small glass container filled with room temperature... more
Exploring quantum computing for high-energy physics  CERN · 2 weeks
Exploring quantum computing for high-energy physics Andrew Purcell cagrigor Thu, 11/15/2018 - 10:13 Eckhard Elsen, Director for Research and Computing at CERN, at the... more
Hard limits on the postselectability of optical graph states  SCIENCE DAILY · 2 weeks
Since the discovery of quantum mechanics, in the early 20th century, physicists have relied on optics to test its fundamentals. more
An important step towards completely secure quantum communication network  PHYS.ORG · 2 weeks
The quest for a secure information network is on. Researchers at the Niels Bohr Institute, University of Copenhagen, have recently succeeded in boosting the storage time of quantum information, using... more
Hard limits on the postselectability of optical graph states  PHYS.ORG · 2 weeks
Since the discovery of quantum mechanics, in the early 20th century, physicists have relied on optics to test its fundamentals. more
Ultracold quantum mix  PHYS.ORG · 2 weeks
The experimental investigation of ultracold quantum matter makes it possible to study quantum mechanical phenomena that are otherwise inaccessible. A team led by the Innsbruck physicist Francesca Ferlaino has now mixed quantum gases of two strongly magnetic elements, erbium and... more
Quantum computing at scale: Scientists achieve compact, sensitive qubit readout  PHYS.ORG · 2 weeks
Professor Michelle Simmons' team at UNSW Sydney has demonstrated a compact sensor for accessing information stored in the electrons of individual atoms—a breakthrough that brings us one step... more
Why a chemistry teacher started a science board game company  SCIENCE-NEWS · 2 weeks
Subatomic is the latest game from John Coveyou, whose company Genius Games wants people to find the joy in science. more
Spotting nature's own evolution of quantum tricks could transform quantum technology  PHYS.ORG · 3 weeks
A new test to spot where the ability to exploit the power of quantum mechanics has evolved in nature has been developed by physicists at the... more
Spotting nature's own evolution of quantum tricks could transform quantum technology  nanowerk · 3 weeks
Physicists have developed a new test to spot where the ability to exploit the power of quantum mechanics has evolved in nature. more
Quantum sound waves to open doors for more powerful sensors  PHYS.ORG · 3 weeks
For the last decade, scientists have been making giant leaps in their ability to build and control systems based on the bizarre rules of quantum mechanics, which describe... more
Radical approach for brighter LEDs  PHYS.ORG · 3 weeks
Scientists have discovered that semiconducting molecules with unpaired electrons, termed 'radicals' can be used to fabricate very efficient organic-light-emitting diodes (OLEDs), exploiting their quantum mechanical 'spin' property to overcome efficiency limitations for traditional, non-radical materials. more
Scientists revolutionize cybersecurity through quantum research  PHYS.ORG · 3 weeks
Scientists at the RDECOM Research Laboratory, the Army's corporate research laboratory (ARL) have found a novel way to safeguard quantum information during transmission, opening the door for more secure and reliable communication for warfighters on the... more
New device for symmetry-breaking-induced optical nonlinearity  PHYS.ORG · 3 weeks
Second-order nonlinear optical processes play a pivotal role in both classical and quantum applications, ranging from extension of the accessible frequencies to generation of quantum entangled photon pairs and squeezed states. This nonlinearity is ruled out,... more
Model of quantum artificial life on quantum computer  SCIENCE DAILY · 3 weeks
Researchers have developed a quantum biomimetic protocol that reproduces the characteristic process of Darwinian evolution adapted to the language of quantum algorithms and quantum computing. The researchers anticipate a future in which... more
Error correction in the quantum world  PHYS.ORG · 3 weeks
Sebastian Krinner is the first winner of the Lopez-Loreta Prize at ETH Zurich. The physicist has a clear goal: he wants to build a quantum computer that is not only powerful, but also works without errors. more
Atomic scale, 2D electronic kagome lattice promises energy efficient devices, quantum computers  nanowerk · 3 weeks
Scientists have successfully created an atomic scale, two-dimensional electronic kagome lattice with potential applications in electronics and quantum computing. more
Scientists create atomic scale, 2-D electronic kagome lattice  PHYS.ORG · 3 weeks
Scientists from the University of Wollongong (UOW), working with colleagues at China's Beihang University, Nankai University, and Institute of Physics at Chinese Academy of Sciences, have successfully created an atomic scale, two-dimensional... more
Realization of flat band with possible nontrivial topology in electronic Kagome lattice  Science Magazine · 4 weeks
The energy dispersion of fermions or bosons vanishes in momentum space if destructive quantum interference occurs in a frustrated Kagome lattice with only nearest-neighbor... more
Which physical mechanism is responsible for magnetic properties of cuprates upon doping?  PHYS.ORG · 4 weeks
An international team of researchers has identified and proved that adding impurities with a lower concentration of electrons stabilizes the antiferromagnetic state of cuprates,... more
Quantum artificial life created on the cloud  PHYS.ORG · 4 weeks
A project by the UPV/EHU-University of the Basque Country has for the first time implemented a model of quantum artificial life on a quantum computer. more
New 'Quantum Sorter' provides information on demand at the atomic scale  nanowerk · 4 weeks
Radical techniques in electron microscopy could revolutionise studies in physics, biochemistry, materials and more. more
Quantum science turns social  SCIENCE DAILY · 4 weeks
Researchers developed a versatile remote gaming interface that allowed experts as well as hundreds of citizen scientists all over the world through multiplayer collaboration and in real time to optimize a quantum gas experiment in a lab. Both teams quickly... more
Quantum science turns social  PHYS.ORG · 4 weeks
Researchers in a lab at Aarhus University have developed a versatile remote gaming interface that allowed external experts as well as hundreds of citizen scientists all over the world to optimize a quantum gas experiment through multiplayer collaboration and in... more
Schrödinger's Bacteria? Physics Experiment Leads to 1st Entanglement of Living Organisms  LIVE SCIENCE · 4 weeks
A paper published in 2017 appeared to show a limited quantum effect in bacteria. Now scientists argue that something much weirder happened. more
Doubly-excited electrons reach new energy states  PHYS.ORG · 4 weeks
Positrons are short-lived subatomic particle with the same mass as electrons and a positive charge. They are used in medicine, e.g. in positron emission tomography (PET), a diagnostic imaging method for metabolic disorders. Positrons also exist... more
Quantum leap for mass as science redefines the kilogramme  PHYS.ORG · 4 weeks
Sealed in a vault beneath a duke's former pleasure palace among the sycamore-streaked forests west of Paris sits an object the size of an apple that determines the weight of... more
Physicists wrangled electrons into a quantum fractal  SCIENCE-NEWS · 4 weeks
The tiny, repeating structure could reveal weird behavior of electrons in fractional dimensions. more
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