Nice! First we see the effect of gravity on time dialation in synchronizing GPS satellites…

By | December 2, 2011
Nice! First we see the effect of gravity on time dialation in synchronizing GPS satellites (their clocks run slower than ours), and now the effect of quantum entanglement on the macroscopic level with lasers and diamonds. What's next? When is the Alcubierre time travel bubble coming?

/via +Kristian Köhntopp

Reshared post from +Matt Mastracci

Quantum entanglement on a visible scale!

"The two diamonds, it seemed, were so connected they reacted as a single entity, rather than two individual objects."

Two Diamonds Linked by Strange Quantum Entanglement | Spooky Action at a Distance | Quantum Mechanics Macroscopic Objects | LiveScience
Physicists have linked two macroscopic diamonds in a state of quantum entanglement usually only seen in particles in the microscopic world.

6 thoughts on “Nice! First we see the effect of gravity on time dialation in synchronizing GPS satellites…

  1. Sophie Wrobel

    +David Jacobs I agree – the implications are bigger than the article itself calls out.

    On the quantum scale, introduced randomness does play a role. However, transmission across copper wires does also occasionally include 'bit flipping' – cyclic redundency algorithms and acknowledge protocols and fingerprinting are established techniques for dealing with this effect. Thus coherent information transfer, even with randomness, should not be a large issue.

  2. David Jacobs

    This seems to be much, much, much bigger news than the article explicitly states. This is HUGE. It could have immediate applications to engineering if large scale replication can be made cost effective.

    This begs for immediate follow-up research. How long can entanglement be preserved? Can it be sustained indefinitely under the right conditions? What is the maximum observed distance between entangled pairs (so far)?

    It doesn't take much imagination to realize innumerable ways this could be harnessed for remote data transmission that is unrestricted by proximity to traditional communication hubs and unaffected by typical causes of interference.

    Obviously this has been the subject of thought experiments for many years, but this is an actual macroscopic component capable of instantaneous information transfer.

    And I don't buy into the weak argument that entanglement can't enable transfer of coherent information because of the randomness involved in the bit flipping. A diamond illustrates this better than photons, since there are more properties to work with. Even with a single bit as the signal (on or off — fired or didn't fire), choices of time delay can create a meaningful signal by using a built-in error correction system. Imagine, perhaps, a time signature where a bit is sent on even beats, and if it fails by triggering locally, only odd beats will get the signal until it "gets through" as a cancel message, then even beat transmission continues. Many pairs in coordination could enable much more sophisticated systems.


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