Category "n.edit" archive

Superconducting-silicon qubits: Using a bottom-up approach to make hybrid quantum devices

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Theorists propose a way to make superconducting quantum devices such as Josephson junctions and qubits, atom-by-atom, inside a silicon crystal. Such systems could combine the most promising aspects of silicon spin qubits with the flexibility of superconducting circuits. Continue reading “Superconducting-silicon qubits: Using a bottom-up approach to make hybrid quantum devices” »

Genetic approach helps design broadband metamaterial

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A specially formed material that can provide custom broadband absorption in the infrared can be identified and manufactured using “genetic algorithms,” These metamaterials can shield objects from view by infrared sensors, protect instruments and be manufactured to cover a variety of wavelengths. Continue reading “Genetic approach helps design broadband metamaterial” »

Innovative imaging technique clarifies molecular self-assembly

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A unique collaboration between chemists and mathematicians at Eindhoven University of Technology (TU/e) has led to a new imaging technique that enables the study of molecular self-assembly with an unprecedented level of detail. The researchers, led by TU/e professors Bert Meijer and Remco van der Hofstad, published their breakthrough last week in the leading journal Science. The new technique opens a world of unique opportunities for the study of complex self-assembling materials, not found in nature, with many potential applications in electronics, medicine and energy. Continue reading “Innovative imaging technique clarifies molecular self-assembly” »

Superconducting qubit array points the way to quantum computers

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Fully functional quantum computer is one of the holy grails of physics. Unlike conventional computers, the quantum version uses qubits (quantum bits), which make direct use of the multiple states of quantum phenomena. When realized, a quantum computer will be millions of times more powerful at certain computations than today’s supercomputers. Continue reading “Superconducting qubit array points the way to quantum computers” »

Progress made in developing nanoscale electronics: New research directs charges through single molecules

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Scientists are facing a number of barriers as they try to develop circuits that are microscopic in size, including how to reliably control the current that flows through a circuit that is the width of a single molecule. Chemical engineers have now figured out how to reliably control the current that flows through a circuit that is the width of a single molecule. Continue reading “Progress made in developing nanoscale electronics: New research directs charges through single molecules” »

The motion of the medium matters for self-assembling particles

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Earlier work assumed that the liquid medium in which certain self-assembling particles float could be treated as a placid vacuum, but scientists have now shown that fluid dynamics play a crucial role in the kind and quality of the structures that can be made in this way. Continue reading “The motion of the medium matters for self-assembling particles” »

New ‘switch’ could power quantum computing

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Using a laser to place individual rubidium atoms near the surface of a lattice of light, scientists have developed a new method for connecting particles — one that could help in the development of powerful quantum computing systems. The new technique allows researchers to couple a lone atom of rubidium, a metal, with a single photon, or light particle. Continue reading “New ‘switch’ could power quantum computing” »

Breakthrough in the field of graphene devices

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Samsung appears to have stumbled across the holy grail of commercial graphene production: A new technique that can grow high-quality single-crystal graphene on silicon wafers — graphene that is suitable for the production of graphene field-effect transistors (GFETs) Continue reading “Breakthrough in the field of graphene devices” »

Quantum dot laser paves the way for lower-cost photonics

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With the explosive growth of bandwidth demand in telecommunications networks, experts are continually seeking new ways to transmit increasingly large amounts of data in the quickest and cheapest ways possible. Photonic devices — which convert light to electricity and vice versa — offer an energy-efficient alternative to traditional copper network links for information transmission. Unfortunately, these devices are also almost always prohibitively pricey.

Continue reading “Quantum dot laser paves the way for lower-cost photonics” »

Orbital computing: An atomic-level tech for future computers

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There seems to be no end to the claims that the data storage technology of the future has just been found.  But that hasn’t stopped one researcher from suggesting that his new discoveries could lead to read-write speeds several thousand times faster than anything now imagined for fancy magnetics or spintronics. Continue reading “Orbital computing: An atomic-level tech for future computers” »

Petawatt ‘Death Star’ laser prepares to investigate quantum mechanics, chemistry, and more

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As high-power lasers have become increasingly important in scientific research, engineers have been working to build more powerful beam emitters. Now Lawrence Livermore National Laboratory (LLNL) in California is taking it to the extreme with a new laser project. If the High-Repetition-Rate Advanced Petawatt Laser System (HAPLS) lives up to its promise, it will be able to produce a laser with over 1 petawatt of power in extremely fast pulses. Continue reading “Petawatt ‘Death Star’ laser prepares to investigate quantum mechanics, chemistry, and more” »

Creating 3D maps with Google’s Tango smartphone

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Google has just unveiled Project Tango, a smartphone with built-in 3D computer vision technology. Think of it as a smartphone with built-in Kinect functionality — but rather than enable Leap-like gesture control, the computer vision tech is used to create a full 3D map of your current environment. At its most basic, you might use Tango to create a map of your house, or a 3D model of your favorite antique vase or your motorbike. Continue reading “Creating 3D maps with Google’s Tango smartphone” »

Switching with single photons: this is a step towards the quantum computer

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The idea to perform data processing with light, without relying on any electronic components, has been around for quite some time. In fact, necessary components such as optical transistors are available. However, up to now they have not gained a lot of attention from computer companies. Continue reading “Switching with single photons: this is a step towards the quantum computer” »