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Quantum Computing and Optically Controlled Electrons

Posted by samzenpus on from the greased-lightning dept.

eldavojohn writes "Researchers have released a new paper on quantum computing theorizing how to use optically controlled electrons to make an ultrafast quantum computer. From the article, "Scientists have designed a scheme to create one of the fastest quantum computers to date using light pulses to rotate electron spins, which serve as quantum bits. This technique improves the overall clock rate of the quantum computer, which could lead to the fastest potentially scalable quantum computing scheme of which the scientists are aware.""

3 of 74 comments (clear)

  1. Did a similar thing... by Anonymous Coward · · Score: 5, Insightful

    this summer...
    But different. I was working with electron spin resonance in solids. The set up used a superconducting magnet and a microwave source. We could actually measure absorption changes when the microwave energy matched the Zeeman split.
    There was even some talk about using the set up as a component for quantum computers.

    However, the people at the lab have started the discover that the primary relaxation method is fast phonon interactions. This must in fact be the case, otherwise the entire upper band would be overpopulated quicker than detectable. Anyway, as things stood, the materials we worked with proved to be ineffective as quantum switches. The spin property was far too transient.

  2. But will it run by AkumaReloaded · · Score: 2, Insightful

    But will it run the new 3d engine of Carmack?

    Seriously, if we ever get as far as a well working quantum computer it would have a huge impact. Imagine IBM super computers that are a hundred times faster then the ones they build now. I wonder what kind of impact it would have on research that needs to calculate lots of huge formulas.

  3. We might make this work now by Steeltoe · · Score: 4, Insightful

    this summer...
    But different. I was working with electron spin resonance in solids. The set up used a superconducting magnet and a microwave source. We could actually measure absorption changes when the microwave energy matched the Zeeman split.
    There was even some talk about using the set up as a component for quantum computers.

    However, the people at the lab have started the discover that the primary relaxation method is fast phonon interactions. This must in fact be the case, otherwise the entire upper band would be overpopulated quicker than detectable. Anyway, as things stood, the materials we worked with proved to be ineffective as quantum switches. The spin property was far too transient.

    In our tests, we have been working with another component. Preliminary tests found the electronic reflection change to be adequately measured within the interaction timeframe. Although none of our instruments were powerful enough to keep up with the fastest cycles, the information bits could be stored in cubic fashion, and then looked-up in strange cubit pairs after the fact. We theorize that a switch can be made, if only the energy is high enough to be reliably detected and stored.

    So if we can somehow correlate the high energy of the absorption and readability of the reflection, we can combine the power of the two methods to enhance eachother and cancel out the negative aspects, I think we can have something that will finally work! When properly set up, it should only be a matter of phase-adjusting the two polarities of the photon switches to be in exact oposition to eachother, while making sure no interference can be made across the photon shields. You may have to distort the angle by a tiny fraction due to stellar polarity in our locality, but that should be easy as pie once you have the two photon switches ready.

    --
    http://www.debunkingskeptics.com/