Posts tagged as:

quantum computing

Molecular Mechano-Electronics

June 21, 2010

Pulling on the ends of a cobalt complex that bridges an electrical junction (as illustrated) changes the geometry of the coordinating ligands, hence the energies of electronic spin states, hence (as it turns out) the low-temperature electrical resistance of the junction. The authors of the paper cited here look toward potential applications for devices that [...]

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Quantum Computing:
Sorry, no speedup in solving linear systems

November 10, 2009

In the science press, Big News often turns out to be hyped trivia, but the current Big News in quantum computing is something else — a self-hyping mutant of genuine big news, the discovery of an algorithm that promises exponential speedup in a class of problems where the result depends on the solution to a [...]

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Atomic Layer Deposition
for Atomically Precise Fabrication (1)

March 23, 2009

I recently posted on a surprising atomically precise fabrication process, and in a comment, Tom Craver remarked that
If a method like this could be combined with Single Layer Deposition , it seems like it’d be getting awfully close to allowing building 3D structures — embedded in a solid, so the next step would be [...]

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Condensed-Matter Physics Condensed

December 7, 2008

In reading up on metal oxides, spin systems, and computation, I found a wonderful 19-page “Perspective of Frontiers in Modern Condensed Matter Physics” [pdf], published in the AAPPS Bulletin last April by Caltech physicist Nai-Chang Yeh. Its scope ranges from symmetry, Landau, and intellectual history, to topological orders and spin liquids, even touching on solid-phase [...]

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