Current Quantum Communication News and Events | Page 25

Current Quantum Communication News and Events, Quantum Communication News Articles.
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A good first step toward nontoxic solar cells
A team of engineers at Washington University in St. Louis has found what they believe is a more stable, less toxic semiconductor for solar applications, using a novel double mineral discovered through data analytics and quantum-mechanical calculations. (2019-07-26)

Virginia Tech researchers lead breakthrough in quantum computing
A team of Virginia Tech chemistry and physics researchers have advanced quantum simulation by devising an algorithm that can more efficiently calculate the properties of molecules on a noisy quantum computer. (2019-07-25)

Valleytronics core theory for future high-efficiency semiconductor technology
Professor Jae Dong Lee's team developed anomalous current and suggested a control mechanism by forming valley domain. Valley domain will become new killer contents of 2D semiconductor technology. (2019-07-24)

Army project may advance quantum materials, efficient communication networks
A US Army project exploring novel applications of superconducting resonators has discovered these systems may be used to simulate quantum materials impossible to otherwise fabricate. Additionally, they may provide insights to open and fundamental questions in quantum mechanics and gravity. (2019-07-24)

Physicists have let light through the plane of the world's thinnest semiconductor crystal
An international research team has studied how photons travel in the plane of the world's thinnest semiconductor crystal. The results of the physicists' work open the way to the creation of monoatomic optical transistors - components for quantum computers, potentially capable of making calculations at the speed of light. (2019-07-23)

When the pigeon and the letter do not travel together
In standard communication the pigeon always carries the message; the information is linked to a physical entity/particle. Counter to intuition, in a new counterfactual communication protocol published in NPJ Quantum Information, scientists from the University of Vienna, the University of Cambridge and the MIT have experimentally demonstrated that in quantum mechanics this is not always true, thereby contradicting a crucial premise of communication theory. (2019-07-23)

NIST physicists create record-setting quantum motion
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 100 packets of energy or 'quanta,' more than five times the previous record high of 17. (2019-07-22)

Quantum interference in service of information technology
Scientists from the Faculty of Physics, University of Warsaw, in collaboration with the University of Oxford and the NIST agency, have shown that quantum interference enables processing of large sets of data faster and more accurately than with standard methods. Their studies may boost applications of quantum technologies in e.g. artificial intelligence, robotics and medical diagnostics. The results of this work have been published in the Science Advances journal. (2019-07-19)

DistME: A fast and elastic distributed matrix computation engine using GPUs
DGIST announced on July 4 that Professor Min-Soo Kim's team in the Department of Information and Communication Engineering developed the DistME (Distributed Matrix Engine) technology that can analyze 100 times more data 14 times faster than the existing technologies. This new technology is expected to be used in machine learning that needs big data processing or various industry fields to analyze large-scale data in the future. (2019-07-17)

200 times faster than ever before: the speediest quantum operation yet
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 result of a vision first outlined by scientists 20 years ago. (2019-07-17)

A graphene superconductor that plays more than one tune
Researchers at the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a graphene device that's thinner than a human hair but has a depth of special traits. It easily switches from a superconducting material that conducts electricity without losing any energy, to an insulator that resists the flow of electric current, and back again to a superconductor -- all with a simple flip of a switch. (2019-07-17)

Limitation exposed in promising quantum computing material
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 that when the TI's insulating layers are as thin as 16 quintuple atomic layers across, the top and bottom metallic surfaces begin to destroy their metallic properties. (2019-07-16)

Researchers build transistor-like gate for quantum information processing -- with qudits
Purdue University researchers are among the first to build what could be a quantum version of a transistor -- with qudits. (2019-07-16)

Coupled exploration of light and matter
In quasiparticles known as polaritons, states of light and matter are strongly coupled. The group of Prof. Ataç ?mamo?lu at ETH Zurich has now developed a new approach to study nonlinear optical properties of polaritons in strongly correlated electronic states. In doing so, they opened up fresh perspectives for exploring both ingredients of the polariton: novel functionalities for photonic devices and fundamental insight into exotic states of matter. (2019-07-15)

NIST's quantum logic clock returns to top performance
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. (2019-07-15)

Robert Alfano team identifies new 'Majorana Photons'
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 and Engineering Robert R. Alfano and his research team are claiming another breakthrough with 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. (2019-07-15)

Which is the perfect quantum theory?
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 United States has now successfully deployed artificial neural networks for image analysis of quantum systems. (2019-07-12)

Engineers revolutionize molecular microscopy
Engineers of the University of Magdeburg have developed a method for measuring the electrical potentials of molecules and molecular surfaces with previously unattainable precision and speed. They have, for the first time, succeeded in creating high resolution maps of molecular electrical potentials, i.e. the electric fields that surround all matter, within just a few minutes. The research results have just been published in the internationally renowned journal, Nature Materials. (2019-07-11)

Dresden physicists use nanostructures to free photons for highly efficient white OLEDs
Thanks to intensive research in the past three decades, organic light-emitting diodes (OLEDs) have been steadily conquering the electronics market -- from OLED mobile phone displays to roll-out television screens, the list of applications is long. Current OLED research focuses in particular on improving the performance of white OLEDs for lighting elements such as ceiling or car interior lighting. These components are subject to much stricter requirements in terms of stability, angular emission and power efficiency. (2019-07-11)

NIST's compact atomic gyroscope displays new twists
Researchers at the National Institute of Standards and Technology (NIST) have upgraded their compact atomic gyroscope to enable multitasking measurement capabilities and measure its performance, important steps toward practical applications. (2019-07-11)

The best of both worlds: how to solve real problems on modern quantum computers
Researchers at the US Department of Energy's (DOE) Argonne National Laboratory and Los Alamos National Laboratory, along with researchers at Clemson University and Fujitsu Laboratories of America, have developed hybrid algorithms to run on size-limited quantum machines and have demonstrated them for practical applications. (2019-07-11)

Strange warping geometry helps to push scientific boundaries
Princeton researchers have built an electronic array on a microchip that simulates particle interactions in a hyperbolic plane, a geometric surface in which space curves away from itself at every point. (2019-07-11)

Quantum sensor breakthrough using naturally occurring vibrations in artificial atoms
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. (2019-07-10)

Terahertz technology escapes the cold
The group of Jérôme Faist in the Department of Physics at ETH Zurich 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. (2019-07-10)

Puzzling on a quantum chessboard
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 quantum particles would be sufficient to solve the mathematically difficult N-queens problem in chess even for large chess boards. (2019-07-10)

US Naval Research Laboratory 'connects the dots' for quantum networks
Researchers at the US Naval Research Laboratory 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. (2019-07-09)

Characterizing the 'arrow of time' in open quantum systems
Even in the strange world of open quantum systems, the arrow of time points steadily forward -- most of the time. A video details new experiments conducted at Washington University in St. Louis that compare the forward and reverse trajectories of superconducting circuits called qubits, and find that they largely tend to follow the second law of thermodynamics. The research is published July 9 in the journal Physical Review Letters. (2019-07-09)

Researchers discover semiconducting nanotubes that form spontaneously
EPFL researchers have discovered a way of making semiconducting, photoluminescent nanotubes form spontaneously in liquid solutions. The tubes, which consist of several walls that are perfectly uniform and just a few atoms thick, display optical properties that make them perfect for use as fluorophores or photocatalysts. (2019-07-08)

Screen size matters: Consumers less attentive to news content on small screens
If you're getting your news from a smartphone, size matters. (2019-07-08)

Mechanical vibration generated by electron spins
Micro mechanical elements are indispensable components of modern electrical devices but the actuation of them requires electrical current. It becomes harder to wire the element as further downscaling of device is pursued. As a way out of this issue, researchers demonstrated a new way to deliver a force to drive micro mechanics by spin current. (2019-07-02)

A new path to understanding second sound in Bose-Einstein condensates
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 around Ludwig Mathey from the University of Hamburg have put forth a new theory for this phenomenon. (2019-07-02)

Generation and sampling of quantum states of light in a silicon chip
Scientists from the University of Bristol and the Technical University of Denmark have found a promising new way to build the next generation of quantum simulators combining light and silicon micro-chips. (2019-07-02)

Redefining the limits of measurement accuracy
Scientists at the QUEST Institute at Leibniz University, Hannover, and the Physikalisch-Technische Bundesanstalt, have, together with colleagues in Florence, Italy, introduced a method based on a non-classical state adapted to two measurement parameters at once. This will enable precision measurements of molecules which could reveal interactions between conventional and dark matter. They report on their results in the current issue of Nature Communications (2019-07-02)

Tweeting while watching TV diminishes enjoyment
The most significant impact of two-screen experience was on viewers' ability to 'transport' into the narrative and become immersed in the televised story. (2019-07-02)

Researchers cast neural nets to simulate molecular motion
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 mechanical laws to describe the motions of molecules, supercharging simulations potentially across a broad range of fields. (2019-07-02)

Tiny supersonic jet injector accelerates nanoscale additive manufacturing
By energizing precursor molecules using a tiny, high-energy supersonic jet of inert gas, researchers have dramatically accelerated the fabrication of nanometer scale structures. The rapid additive manufacturing technique also allows them to produce structures with high aspect ratios. Now, a theory developed to describe the technique could lead to new applications for additive nanomanufacturing and new nanoscale materials. (2019-07-02)

Simulating quantum systems with neural networks
A new computational method, based on neural networks, can simulate open quantum systems with unprecedented versatility. The method was independently developed by physicists at EPFL, France, the UK, and the US, and is published in Physical Review Letters. (2019-07-01)

Theoretical physicists unveil one of the most ubiquitous and elusive concepts in chemistry
Even if we study them at school, oxidation numbers have so far eluded any rigorous quantum mechanical definition. A new SISSA study, published in Nature Physics, provides such a definition, based on the theory of topological quantum numbers, honored with the 2016 Nobel prize in Physics. This result paves the way to an accurate, yet tractable, numerical simulation of a broad class of materials that are important in energy-related technologies and planetary sciences. (2019-07-01)

World's smallest MRI performed on single atoms
IBS-QNS researchers have made a major scientific breakthrough by performing the world's smallest magnetic resonance imaging (MRI). In an international collaboration with colleagues from the US, they used their new technique to visualize the magnetic field of single atoms. (2019-07-01)

Catheters: Big source of infection, but often overlooked
Indwelling devices like catheters cause roughly 25% of hospital infections, but ongoing efforts to reduce catheter use and misuse haven't succeeded as much as health care workers would like. (2019-07-01)

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