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Physicists Create Quantum Link Between Photons That Don't Exist at the Same Time

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Sam Wormley

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May 22, 2013, 3:40:07 PM5/22/13
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Physicists Create Quantum Link Between Photons That Don't Exist at the
Same Time
> http://news.sciencemag.org/sciencenow/2013/05/physicists-create-quantum-link-b.html?ref=em

> Now they're just messing with us. Physicists have long known that
> quantum mechanics allows for a subtle connection between quantum
> particles called entanglement, in which measuring one particle can
> instantly set the otherwise uncertain condition, or "state," of
> another particle -- even if it's light years away. Now, experimenters
> in Israel have shown that they can entangle two photons that don't
> even exist at the same time.
>
> "It's really cool," says Jeremy O'Brien, an experimenter at the
> University of Bristol in the United Kingdom, who was not involved in
> the work. Such time-separated entanglement is predicted by standard
> quantum theory, O'Brien says, "but it's certainly not widely
> appreciated, and I don't know if it's been clearly articulated
> before."
>

> Now Eli Megidish, Hagai Eisenberg, and colleagues at the Hebrew
> University of Jerusalem have entangled two photons that don't exist
> at the same time. They start with a scheme known as entanglement
> swapping. To begin, researchers zap a special crystal with laser
> light a couple of times to create two entangled pairs of photons,
> pair 1 and 2 and pair 3 and 4. At the start, photons 1 and 4 are not
> tangled. But they can be if physicists play the right trick with 2
> and 3.


Y.Porat

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May 22, 2013, 11:40:08 PM5/22/13
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==========================
it seems that untill now
no one really understand waht is a single photon

E = hf
is not the formula for a single photon !!
and i proved it long ago
so
before talking about photons and their properties

BETTER LEARN WHAT IS A SINGLE PHOTON ENERGY
AND MASS !!
it starts with my new definition I

of the single photon energy
it is not E =hf
---
but

hf times n
while

0 > n <<< 1.00000
(copyright Y Porat
----
and while you understand that

A NEW WORLD IS OPENED FOR YOU

ATB
Y.Porat
=================================

Yousuf Khan

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May 23, 2013, 3:30:11 AM5/23/13
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How can they even prove that these particles are entangled if they're
separated by time?

Yousuf Khan

Sam Wormley

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May 23, 2013, 9:51:45 AM5/23/13
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What about the techniques used to prove that spatially separated
particles are entangled? Why should they be different?


alie...@gmail.com

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May 23, 2013, 6:13:35 PM5/23/13
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On May 23, 6:51 am, Sam Wormley <sworml...@gmail.com> wrote:
> On 5/23/13 2:30 AM, Yousuf Khan wrote:
>
> > On 22/05/2013 10:40 PM, Sam Wormley wrote:
> >> Physicists Create Quantum Link Between Photons That Don't Exist at the
> >> Same Time
> >>>http://news.sciencemag.org/sciencenow/2013/05/physicists-create-quant...
Entangled temporally separated particles have consequences for
causality, that's why.


Mark L. Fergerson
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