back to article Atomic clocks' ticks tamed by 3,000 entangled atoms

MIT and University of Belgrade boffins have taken a big step in applying the quantum property of entanglement to macro systems: they're claiming to have roped together more than 2,900 rubidium atoms with a single photon. In what lead author Vladan Vuletić says is a “new class” of entangled states, in work that they believe …

  1. frank ly Silver badge


    What I find interesting, and amazing, is that the act of detection of the photon (which has had its polarisation shifted by interaction with the atoms) seems to affect the entangled state of the atoms. Did I get that right?

    I'm still wondering how you can use that as a clock.

  2. Anonymous Coward

    Yes but....

    ...can it go a full day without be charged?

  3. Ashton Black


    Yet another story, with cool science bods NOT inventing my personal jetpack!!!

    It's almost like they're not interested!

    1. Crazy Operations Guy Silver badge

      Re: Boffinry!

    2. Bleu

      Re: Boffinry!

      Personal jet packs have long existed, been in movies and on TV, they just don't seem to have much staying power.

      The New Zealand crew attempting to do something similar with fans seem to have a good idea.

      One would imagine that it would still be as noisy as hell for the person mounted in the thing.

  4. Adolph Clickbait

    Ho much ..

    for the gold plated version

    1. Pascal Monett Silver badge

      For a ho ?

      About $50, I'd say.

      1. Crazy Operations Guy Silver badge

        Well, you could get plenty by way of electrolyzing laboratory-grade H20. Put it into a gas centrifuge to separate out the remaining Hydrogen and the trace elements.

  5. Nightkiller

    We will need this accuracy in order to build our a la Star Trek Transporters.

    1. Bleu

      There will never be such a thing in thy or my lifetime. Reasons are many, sure you are aware of most.

  6. Bleu

    Does the writer understand

    the difference between tic and tick?

    Apparently not.

    Shame on the Reg.

    1. Crazy Operations Guy Silver badge

      Re: Does the writer understand

      Well, the atoms are vibrating, and I suppose you could say that each tick of the clock is a tic of an atom...

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