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” »
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” »
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” »
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” »
A new invention from Germany’s University of Mainz is not only the world’s smallest engine by an enormous margin, it may have broken a theoretical limit for engine efficiency. The device, a so-called “atomic engine,” produces power thanks to the movements of just a single atom trapped and manipulated. It’s an incredible achievement that, while not particularly useful for engineering in the short term, could revolutionize our understanding of the quantum world. Plus, it’s really neat. Continue reading “A single-atom engine breaks the laws of physics and progress in quantum computing” »
New research shows that a remarkable defect in synthetic diamond produced by chemical vapor deposition allows researchers to measure, witness, and potentially manipulate electrons in a manner that could lead to new “quantum technology” for information processing. The study is published in the January 31, 2014, issue of Physical Review Letters.
Increasingly, quantum computers are predicted to be the next great leap in computational power — but in reality they are more likely to be the next next great leap. Right now we have to tailor experimental quantum chips to their particular mathematical process of interest, literally build them to solve a specific problem; today’s silicon solutions will reach the peak of their potential long before we can go buy Intel or AMD’s new plug-and-play quantum processor.
Continue reading “Scientists use DNA to shape graphene into the transistor of the future” »
Diamond is a semiconductor with extreme properties, such as high breakdown field, high saturation velocity, high carrier mobilities and the highest thermal conductivity of all materials. This makes diamond extreme in the group of wide-bandgap semiconductors, which includes e.g., silicon carbide (SiC) and gallium nitride (GaN).
Continue reading ““Valleytronics” – quantum electronics in diamond” »