Tag Archives | Quantum Computers
Laser Pulse Turns Glass Into a Metal

Laser Pulse Turns Glass Into a Metal

For tiny fractions of a second, quartz glass can take on metallic properties, when it is illuminated be a laser pulse. This has been shown by calculations at the Vienna University of Technology. The effect could be used to build logical switches which are much faster than today’s microelectronics. Quartz glass does not conduct electric […]

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Weird Magic Ingredient for Quantum Computing

Weird Magic Ingredient for Quantum Computing

A form of quantum weirdness is a key ingredient for building quantum computers according to new research from a team at the University of Waterloo’s Institute for Quantum Computing (IQC).   In a new study published in the journal Nature, researchers have shown that a weird aspect of quantum theory called contextuality is a necessary […]

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New ‘Switch’ Could Power Quantum Computing

New ‘Switch’ Could Power Quantum Computing

Using a laser to place individual rubidium atoms near the surface of a lattice of light, scientists at MIT and Harvard University have developed a new method for connecting particles — one that could help in the development of powerful quantum computing systems.   The new technique, described in a paper published today in the […]

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Einstein’s ‘Spooky’ Theory: Quantum Internet?

Einstein’s ‘Spooky’ Theory: Quantum Internet?

Einstein’s skepticism about quantum mechanics may lead to an ultra-secure Internet, suggests a new paper by researchers from Swinburne University of Technology and Peking University.   Associate Professor Margaret Reid from Swinburne’s Centre for Quantum and Optical Science said Einstein’s reservations about quantum mechanics were highlighted in a phenomenon known as “‘spooky’ action at a […]

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Electronics Based On a 2-D Electron Gas

Electronics Based On a 2-D Electron Gas

Usually, microelectronic devices are made of silicon or similar semiconductors. Recently, the electronic properties of metal oxides have become quite interesting. These materials are more complex, yet offer a broader range of possibilities to tune their properties. An important breakthrough has now been achieved at the Vienna University of Technology: a two dimensional electron gas […]

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‘Quantum Droplet’ in Semiconductor Discovered

‘Quantum Droplet’ in Semiconductor Discovered

JILA physicists used an ultrafast laser and help from German theorists to discover a new semiconductor quasiparticle — a handful of smaller particles that briefly condense into a liquid-like droplet.   Quasiparticles are composites of smaller particles that can be created inside solid materials and act together in a predictable way. A simple example is […]

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First Single-Molecule LED Created

First Single-Molecule LED Created

The ultimate challenge in the race to miniaturize light emitting diodes (LED) has now been met: a team led by the Institut de Physique et de Chimie des Matériaux de Strasbourg (IPCMS, CNRS/Université de Strasbourg), in collaboration with UPMC and CEA, has developed the first ever single-molecule LED. The device is formed from a single […]

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Natural 3-D Counterpart to Graphene Discovered: New Form of Quantum Matter

Natural 3-D Counterpart to Graphene Discovered: New Form of Quantum Matter

The discovery of what is essentially a 3D version of graphene — the 2D sheets of carbon through which electrons race at many times the speed at which they move through silicon — promises exciting new things to come for the high-tech industry, including much faster transistors and far more compact hard drives. A collaboration […]

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Topological Insulators: Breaking Symmetry for Faster Computers

Topological Insulators: Breaking Symmetry for Faster Computers

Ordinary insulating solids, such as diamond, have energy bands that are fully occupied by electrons. The conducting band is so far away from the valence band in diamond that electrons do not have sufficient energy to move — the ‘band gap’ is large — therefore no electric current can be carried.   In recent years, […]

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Giant Atom Eats Quantum Gas

Giant Atom Eats Quantum Gas

A team of experimental and theoretical physicists from the University of Stuttgart studied a single micrometer-sized atom. This atom contains tens of thousands of normal atoms in its electron orbital.   The interaction of electrons and matter is fundamental to material properties such as electrical conductivity. Electrons are scattering from atoms of the surrounding matter […]

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