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News articles about "Quantum"

Shining a light on quantum dots measurement

Due to their nanoscale dimensions and sensitivity to light quantum dots are being used for a number of bioimaging applications including in vivo imaging of tumor cells detection of biomolecules and measurement of pH changes ... - Read More

Self-destructive effects of magnetically-doped ferromagnetic topological insulators

The discovery of topologically protected electrical conductivity on the surface of some materials whose bulk interior acts as an insulator was among the most sensational advances in the last decade of condensed matter physics with ... - Read More

Improved interface for a quantum internet

A quantum network requires efficient interfaces over which information can be transferred from matter to light and back In the current issue of Physical Review Letters Innsbruck physicists led by Rainer Blatt and Tracy Northup ... - Read More

Physicists observe light-matter interaction of two atoms for the first time

If two children splash in the sea high water waves will emerge due to constructive superposition Different observations are made for the microscopic world in an experiment at the University of Bonn where physicists used ... - Read More

Race of the electrons: Laser pulses can be used to track the motion of electrons in metals with attosecond precision

It is easy to measure electric current But it is extremely hard to watch the individual electrons which make up this current Electrons race through the metal with a speed of several million meters per ... - Read More

A new step towards using graphene in electronic applications

Few materials have received as much attention from the scientific world or have raised so many hopes with a view to their potential deployment in new applications as graphene has This is largely due to ... - Read More

New superconducting hybrid crystals

A new type of 'nanowire' crystals that fuses semiconducting and metallic materials on the atomic scale could lay the foundation for future semiconducting electronics Researchers at the University of Copenhagen are behind the breakthrough which ... - Read More

From the bottom up: Manipulating nanoribbons at the molecular level

Narrow strips of graphene called nanoribbons exhibit extraordinary properties that make them important candidates for future nanoelectronic technologies A barrier to exploiting them however is the difficulty of controlling their shape at the atomic scale ... - Read More

From the lab to your digital device, quantum dots have made quantum leaps

Outside his career as a noted nanochemist Lawrence Berkeley National Laboratory Berkeley Lab director Paul Alivisatos is an avid photographer To show off his photos his preferred device is a Kindle Fire HDX tablet because ... - Read More

Magic numbers of quantum matter revealed by cold atoms

Topology a branch of mathematics classifying geometric objects has been exploited by physicists to predict and describe unusual quantum phases the topological states of matter These intriguing phases generally accessible at very low temperature exhibit ... - Read More

Shedding light on why blue LEDS are so tricky to make

Scientists at UCL in collaboration with groups at the University of Bath and the Daresbury Laboratory have uncovered the mystery of why blue light emitting diodes LEDs are so difficult to make by revealing the ... - Read More

Quantum optical hard drive breakthrough

Scientists developing a prototype quantum hard drive have improved storage time by a factor of more than 100. The team's record storage time of six hours is a major step towards a secure worldwide data ... - Read More

A qubit candidate shines brighter

In the race to design the world's first universal quantum computer a special kind of diamond defect called a nitrogen vacancy NV center is playing a big role NV centers consist of a nitrogen atom ... - Read More

Glimpsing pathway of sunlight to electricity

Four pulses of laser light on nanoparticle photocells in a University of Oregon spectroscopy experiment has opened a window on how captured sunlight can be converted into electricity The work which potentially could inspire devices ... - Read More

Graphene 'cut and paste' with microwaves

Scientists in Russian Academy of Sciences Moscow have revealed a variety of transformations taking place on carbon surface under the influence of metal nanoparticles and microwaves Graphene cut and paste with metal nanoparticles was carried ... - Read More

The simplest element: Turning hydrogen into 'graphene'

New work from Carnegie's Ivan Naumov and Russell Hemley delves into the chemistry underlying some surprising recent observations about hydrogen and reveals remarkable parallels between hydrogen and graphene under extreme pressures Their work is the ... - Read More

Scientists measure speedy electrons in silicon

he entire semiconductor industry not to mention Silicon Valley is built on the propensity of electrons in silicon to get kicked out of their atomic shells and become free These mobile electrons are routed and ... - Read More

Theory details how 'hot' monomers affect thin-film formation

Like a baseball player sliding into third a hot monomer skids in a straight line along a cold surface until it's safely among its fellow molecules This is not what usually happens when scientists assemble ... - Read More

Physicists explain puzzling particle collisions

Composite subatomic structures created by powerful collisions of protons have fallen apart in unexpected ways within a detector in the Large Hadron Collider called LHCb The 'b' in the detector's name stands for beauty a ... - Read More

New way to plug 'leaky' light cavities demonstrated

Engineers at the University of California San Diego have demonstrated a new and more efficient way to trap light using a phenomenon called bound states in the continuum BIC that was first proposed in the ... - Read More
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