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Breakthrough for Quantum Measurement

Posted by ScuttleMonkey on from the states-from-your-stateless-news dept.

said_captain_said_wo writes to tell us that PhysicsWeb is reporting that two teams of physicists have developed a new method for measuring the state of quantum bits in a quantum computer without disturbing the state. From the article: "In the future, the Josephson capacitance could be used for operations in a large-scale quantum computer," says Mika Sillanpaa of Helsinki University. "The Josephson inductance and Josephson capacitance together would also allow us to build new types of quantum 'band engineered' electronic devices, such as low-noise parametric amplifiers."

12 of 201 comments (clear)

  1. Re:Heisenberg Uncertainty Principle? by Anonymous Coward · · Score: 5, Funny

    I'm not sure

  2. Re:Heisenberg Uncertainty Principle? by Centurix · · Score: 4, Funny

    Maybe. Maybe not, who can tell?

    --
    Task Mangler
  3. Shroedinger's cat? by mcrbids · · Score: 4, Funny

    Does this mean that we can find out if the cat is dead without opening the box? Sure sounds like it.

    IANASPP (I Am Not A Sub-atomic Particle Physicist) but this seems to be quite a breakthrough that might save millions of subatomic cats from untimely deaths...

    Anybody with some actual knowledge care to elucidate?

    --
    I have no problem with your religion until you decide it's reason to deprive others of the truth.
  4. Re:Heisenberg Uncertainty Principle? by Obvius · · Score: 4, Funny

    Heisenburg's Uncertainty Principle - DxDp>=hbar/2 Or as my old prof used to say "When you've got energy, you don't have the time. And when you've got the time, you don't have the energy."

  5. no fair by FidelCatsro · · Score: 3, Funny

    You changed the state of the quantum bits by measuring them

    --
    The only things certain in war are Propaganda and Death. You can never be sure which is which though
  6. Re:Is quantum computing useful beyond decryption? by smeek · · Score: 5, Funny

    Quantum computing is also good for solving problems in quantum mechanics. No, really.

  7. Crap! by werewolf1031 · · Score: 5, Funny

    I changed the article by reading it! Someone tell me what it says now...?

  8. Re:Heisenberg Uncertainty Principle? by Haydn+Fenton · · Score: 4, Funny

    Netcraft confirms it, Schrödingers cat is dead.

  9. Re:So what does Linus have to say about it. by kimmop · · Score: 2, Funny
    However I imagine debugging on a quantum computer will be no fun: After all, quantum programs will behave different when you look at them with a debugger!
    And how is that different from debugging C pointers? ;)
    --

    --
    Binaries may die but source code lives forever

  10. thank goodness by revery · · Score: 2, Funny

    The Josephson inductance and Josephson capacitance together would also allow us to build new types of quantum 'band engineered' electronic devices, such as low-noise parametric amplifiers.

    I'm very glad, as I have a current-model parametric amplifier and man is it LOUD....
    I should have figured as much, seeing as how it goes up to 11.

  11. Re:Implications in reverse order by Kagura · · Score: 2, Funny

    So, for example, whereas factoring a 64-bit prime number might take a fairly hefty digital computer a decent chunk of time

    I can factor even the largest Mersenne primes in under two seconds in my head. Maybe I can help these scientists out a little bit with factoring primes... :)

  12. They're so silly by jav1231 · · Score: 2, Funny

    Hey, it could be worse. Quantum Theorists could be using their imagination to sit around and dream about getting laid.