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Categories: Physics: Quantum Physics

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Chemistry: Inorganic Chemistry Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Perturbations simplify the study of 'super photons'      (via sciencedaily.com)     Original source 

Thousands of particles of light can merge into a type of 'super photon' under suitable conditions. Physicists call such a state a photon Bose-Einstein condensate. Researchers have now shown that this exotic quantum state obeys a fundamental theorem of physics. This finding now allows one to measure properties of photon Bose-Einstein condensates which are usually difficult to access.

Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Novel diamond quantum magnetometer for ambient condition magnetoencephalography      (via sciencedaily.com)     Original source 

A highly sensitive diamond quantum magnetometer utilizing nitrogen-vacancy centers can achieve millimeter-scale resolution magnetoencephalography (MEG). The novel magnetometer, based on continuous-wave optically detected magnetic resonance, marks a significant step towards realizing ambient condition MEG and other practical applications.

Chemistry: Biochemistry Chemistry: General Engineering: Nanotechnology Physics: General Physics: Optics Physics: Quantum Physics
Published

Shining a light on molecules: L-shaped metamaterials can control light direction      (via sciencedaily.com)     Original source 

Polarized light waves spin clockwise or counterclockwise as they travel, with one direction behaving differently than the other as it interacts with molecules. This directionality, called chirality or handedness, could provide a way to identify and sort specific molecules for use in biomedicine applications, but researchers have had limited control over the direction of the waves -- until now.

Chemistry: Biochemistry Computer Science: Quantum Computers Mathematics: General Physics: General Physics: Quantum Computing Physics: Quantum Physics
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Groundbreaking progress in quantum physics: How quantum field theories decay and fission      (via sciencedaily.com)     Original source 

An international research team has sparked interest in the scientific community with results in quantum physics. In their current study, the researchers reinterpret the Higgs mechanism, which gives elementary particles mass and triggers phase transitions, using the concept of 'magnetic quivers.'

Chemistry: Biochemistry Computer Science: Quantum Computers Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

The coldest lab in New York has new quantum offering      (via sciencedaily.com)     Original source 

Physicists describe the successful creation of a molecular Bose-Einstein condensate (BEC). Made up of dipolar sodium-cesium molecules that were cooled with the help of microwave shielding to just 5 nanoKelvin and lasted for up to two seconds, the new molecular BEC will help scientists explore a number of different quantum phenomena, including new types of superfluidity, and enable the creation of quantum simulators to ecreate the enigmatic properties of complex materials, like solid crystals.

Chemistry: Biochemistry Chemistry: General Chemistry: Organic Chemistry Physics: General Physics: Optics Physics: Quantum Physics
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Scientists develop most sensitive way to observe single molecules      (via sciencedaily.com)     Original source 

A technical achievement marks a significant advance in the burgeoning field of observing individual molecules without the aid of fluorescent labels. While these labels are useful in many applications, they alter molecules in ways that can obscure how they naturally interact with one another. The new label-free method makes the molecules so easy to detect, it is almost as if they had labels.

Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

The thinnest lens on Earth, enabled by excitons      (via sciencedaily.com)     Original source 

Lenses are used to bend and focus light. Normal lenses rely on their curved shape to achieve this effect, but physicists have made a flat lens of only three atoms thick which relies on quantum effects. This type of lens could be used in future augmented reality glasses.

Computer Science: General Computer Science: Quantum Computers Mathematics: Modeling Physics: General Physics: Quantum Computing Physics: Quantum Physics
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Theoretical quantum speedup with the quantum approximate optimization algorithm      (via sciencedaily.com)     Original source 

Researchers demonstrated a quantum algorithmic speedup with the quantum approximate optimization algorithm, laying the groundwork for advancements in telecommunications, financial modeling, materials science and more.

Energy: Technology Offbeat: General Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Study is step towards energy-efficient quantum computing in magnets      (via sciencedaily.com)     Original source 

Researchers have managed to generate propagating spin waves at the nanoscale and discovered a novel pathway to modulate and amplify them. Their discovery could pave the way for the development of dissipation free quantum information technologies. As the spin waves do not involve electric currents these chips will be free from associated losses of energy. The rapidly growing popularity of artificial intelligence comes with an increasing desire for fast and energy efficient computing devices and calls for novel ways to store and process information. The electric currents in conventional devices suffer from losses of energy and subsequent heating of the environment.

Physics: General Physics: Quantum Physics
Published

Theory and experiment combine to shine a new light on proton spin      (via sciencedaily.com)     Original source 

Nuclear physicists have long been working to reveal how the proton gets its spin. Now, a new method that combines experimental data with state-of-the-art calculations has revealed a more detailed picture of spin contributions from the very glue that holds protons together.

Chemistry: Inorganic Chemistry Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

More than spins: Exploring uncharted territory in quantum devices      (via sciencedaily.com)     Original source 

Many of today's quantum devices rely on collections of qubits, also called spins. These quantum bits have only two energy levels, the '0' and the '1'. However, spins in real devices also interact with light and vibrations known as bosons, greatly complicating calculations. Researchers now demonstrate a way to describe spin-boson systems and use this to efficiently configure quantum devices in a desired state.

Chemistry: Inorganic Chemistry Engineering: Nanotechnology Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

How a tiny device could lead to big physics discoveries and better lasers      (via sciencedaily.com)     Original source 

Researchers have fabricated a device no wider than a human hair that will help physicists investigate the fundamental nature of matter and light. Their findings could also support the development of more efficient lasers, which are used in fields ranging from medicine to manufacturing.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Environmental: General Geoscience: Environmental Issues Geoscience: Geochemistry Physics: General Physics: Quantum Physics
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Shedding light on the chemical enigma of sulfur trioxide in the atmosphere      (via sciencedaily.com)     Original source 

Researchers discovered that sulfur trioxide can form products other than sulfuric acid in the atmosphere by interacting with organic and inorganic acids. These previously uncharacterized acid sulfuric anhydride products are almost certainly key contributors to atmospheric new particle formation and a way to efficiently incorporate carboxylic acids into atmospheric nanoparticles. Better prediction of aerosol formation can help curb air pollution and reduce uncertainties concerning climate change.

Physics: General Physics: Optics Physics: Quantum Physics
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New discoveries about the nature of light could improve methods for heating fusion plasma      (via sciencedaily.com)     Original source 

Scientists have made discoveries about light particles known as photons that could aid the quest for fusion energy.

Chemistry: Inorganic Chemistry Computer Science: General Computer Science: Quantum Computers Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

New crystal production method could enhance quantum computers and electronics      (via sciencedaily.com)     Original source 

Scientists describe a new method to make very thin crystals of the element bismuth -- a process that may aid the manufacturing of cheap flexible electronics an everyday reality.

Chemistry: Inorganic Chemistry Engineering: Graphene Engineering: Nanotechnology Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Enhancing superconductivity of graphene-calcium superconductors      (via sciencedaily.com)     Original source 

Researchers experimentally investigate the impact of introducing high-density calcium on the superconductivity of calcium-intercalated bilayer graphene.

Chemistry: Inorganic Chemistry Energy: Nuclear Energy: Technology Physics: General Physics: Optics Physics: Quantum Physics
Published

Magnetic imprint on deconfined nuclear matter      (via sciencedaily.com)     Original source 

Scientists have the first direct evidence that the powerful magnetic fields created in off-center collisions of atomic nuclei induce an electric current in 'deconfined' nuclear matter. The study used measurements of how charged particles are deflected when they emerge from the collisions. The study provides proof that the magnetic fields exist and offers a new way to measure electrical conductivity in quark-gluon plasma.

Computer Science: General Computer Science: Quantum Computers Offbeat: Computers and Math Offbeat: General Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

A simple quantum internet with significant possibilities      (via sciencedaily.com)     Original source 

It's one thing to dream up a quantum internet that could send hacker-proof information around the world via photons superimposed in different quantum states. It's quite another to physically show it's possible. That's exactly what physicists have done, using existing Boston-area telecommunication fiber, in a demonstration of the world's longest fiber distance between two quantum memory nodes to date.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
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Scientists create an 'optical conveyor belt' for quasiparticles      (via sciencedaily.com)     Original source 

Using interference between two lasers, a research group has created an 'optical conveyor belt' that can move polaritons -- a type of light-matter hybrid particle -- in semiconductor-based microcavities. This work could lead to the development of new devices with applications in areas such as quantum metrology and quantum information.

Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Speedy, secure, sustainable -- that's the future of telecom      (via sciencedaily.com)     Original source 

A new device that can process information using a small amount of light could enable energy-efficient and secure communications.