Quantum Entanglement possible instant communication over very long distances

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Profile Lynn Special Project $75 donor
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Message 1549661 - Posted: 30 Jul 2014, 2:02:25 UTC - in response to Message 1548765.  

Mystery of the 'Cheshire Cat' of quantum physics solved: Scientists manage to separate a particle from its spin

Scientists separated a neutron from its magnetic moment for the first time
Research was carried out by a team from Vienna University of Technology
The groundbreaking study involved the so-called 'Cheshire Cat' experiment
This involves separating a particle from one of its quantum properties
It is likened to detecting a ball separately to its rotation in our 'macro' world

http://www.dailymail.co.uk/sciencetech/article-2709846/Mystery-Cheshire-Cat-quantum-physics-solved-Scientists-manage-separate-particle-spin.html
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Message 1549670 - Posted: 30 Jul 2014, 2:30:20 UTC - in response to Message 1549661.  
Last modified: 30 Jul 2014, 2:33:06 UTC

Mystery of the 'Cheshire Cat' of quantum physics solved: Scientists manage to separate a particle from its spin

Scientists separated a neutron from its magnetic moment for the first time
Research was carried out by a team from Vienna University of Technology
The groundbreaking study involved the so-called 'Cheshire Cat' experiment
This involves separating a particle from one of its quantum properties
It is likened to detecting a ball separately to its rotation in our 'macro' world

http://www.dailymail.co.uk/sciencetech/article-2709846/Mystery-Cheshire-Cat-quantum-physics-solved-Scientists-manage-separate-particle-spin.html


Ooooh - thanks Lynn :) separated my brain from my head for that one and actually understood it :) which probably means I haven't got a clue...
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Message 1549699 - Posted: 30 Jul 2014, 5:35:45 UTC - in response to Message 1549670.  

Mystery of the 'Cheshire Cat' of quantum physics solved: Scientists manage to separate a particle from its spin

Scientists separated a neutron from its magnetic moment for the first time
Research was carried out by a team from Vienna University of Technology
The groundbreaking study involved the so-called 'Cheshire Cat' experiment
This involves separating a particle from one of its quantum properties
It is likened to detecting a ball separately to its rotation in our 'macro' world

http://www.dailymail.co.uk/sciencetech/article-2709846/Mystery-Cheshire-Cat-quantum-physics-solved-Scientists-manage-separate-particle-spin.html


Ooooh - thanks Lynn :) separated my brain from my head for that one and actually understood it :) which probably means I haven't got a clue...


Ooooh - welcome Annie :)separated my brain from my head for that one and actually understood it :) which probably means I haven't got a clue...

Maybe in another u-verse:)
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Message 1549768 - Posted: 30 Jul 2014, 9:34:39 UTC

Thanks Lynn but my brain hurts totally lost me on that 1 .
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Message 1549805 - Posted: 30 Jul 2014, 12:51:52 UTC

I downloaded the article from Nature Communications and am trying to understand it. It seems to be based on the idea of "weak measurement" that is a measurement that, contrarily to what I was taught at university, does not alter the state of the system being measured.
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Message 1550336 - Posted: 31 Jul 2014, 5:56:51 UTC - in response to Message 1549768.  

Thanks Lynn but my brain hurts totally lost me on that 1 .


Other Universes. Better? :-)
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Message 1550391 - Posted: 31 Jul 2014, 8:16:47 UTC - in response to Message 1550336.  

hehehe thank you LYN headace gone now brain stop'd hurting :)
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Message 1550454 - Posted: 31 Jul 2014, 12:37:47 UTC - in response to Message 1549699.  
Last modified: 31 Jul 2014, 12:38:09 UTC

Maybe in another u-verse:)


I like my me-verse... everything makes sense in it :)
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Message 1551237 - Posted: 2 Aug 2014, 3:01:54 UTC - in response to Message 1551020.  
Last modified: 2 Aug 2014, 3:08:32 UTC

My-verse likes your me-verse :-))) We should con-verse about that without going into re-verse.


:)))

Oh, and by the way, weak measurement is defined as this



Okay! The Aw bit I get... and the = seems fine too. Where things might be getting fuzzy is when the: of a oi is divided by the ofoi... which if I'm right is functionally Greek to me :)

My version of weak measurement is when the distance between the beer glass and my lips is more than my brain thinks it is before tipping the glass, resulting in a wet lap. My brain hurts with either definition.


That IS a weak measurement! :))) champagne flutes and noses that don't fit inside them (or that don't extend far enough outside them) cause similar problems. They too are an example of weak measurements... :/

edit: my felicitations to your brain... :)
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Message 1551251 - Posted: 2 Aug 2014, 3:28:21 UTC - in response to Message 1551020.  

Cris all i say is aaaaaahhhhhhhhhh what ? Brain hurting again no understand goobbly gook
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Message 1551260 - Posted: 2 Aug 2014, 3:42:24 UTC - in response to Message 1551251.  

Cris all i say is aaaaaahhhhhhhhhh what ? Brain hurting again no understand goobbly gook


My felicitations to your brain too Glenn :)
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Message 1551445 - Posted: 2 Aug 2014, 14:32:28 UTC

Thinking more about it, if ET did leave behind a quantum communicator (assuming it is possible to make one) they probably would have left it on one of the more stable planets or moons. Stable meaning no tectonic activity. Mars is a candidate as well as our moon, or one of the outer moons of Jupiter. The earth changes it's surface too much to leave something for us to find. Also, leaving a means of communication somewhere other than earth would guarantee a certain level of development on our part.
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Message 1551774 - Posted: 3 Aug 2014, 9:03:20 UTC
Last modified: 3 Aug 2014, 9:03:48 UTC

I don't think that quantum entanglement can be used to transmit any information. This is not only my personal opinion but also that of Roberto Battiston, who was one of the proposers of the AMS-2 experiment on the ISS, together with Samuel Ting. He is now president of the Italian Space Agency.
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Message 1551810 - Posted: 3 Aug 2014, 12:21:36 UTC

I would put the use of quantum entanglement as a means of communication over vast distances in the same category as FTL travel. Very unlikely but not necessarily impossible given the right power source.
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
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Message 1581672 - Posted: 4 Oct 2014, 0:45:22 UTC - in response to Message 1551774.  

putting this article here.

Physicists Observe New Particle That's Also Its Own 'Antiparticle'

After decades of searching, physicists at Princeton University say they've observed an elusive particle that behaves both like matter and antimatter.

Yes, the discovery is an exciting step forward for particle physics, but it may also help advance the creation of powerful quantum computers.


http://www.huffingtonpost.com/2014/10/03/matter-antimatter-majorana-fermion_n_5926326.html
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Message 1581723 - Posted: 4 Oct 2014, 7:33:39 UTC - in response to Message 1581672.  
Last modified: 4 Oct 2014, 7:34:54 UTC

They were proposed by Ettore Majorana in 1937, one year before his disappearance that was never explained. He went from Naples, where he had the chair of theoretical physics and very few students, to Palermo, leaving a letter in which he announced his suicide. Then from Palermo he sent a telegram to a colleague saying he would be back but never arrived again in Naples. Enrico Fermi sent a letter to Mussolini asking that the police would search him amd Mussolini wrote on the letter "I want him to be found". Fermi had described Majorana as a genius and he was. Leonardo Sciascia wrote a book on Majorana describing him as someone feeling guilt for the development of nuclear weapons but Majorana had nothing in common with nuclear research. I believe that the reason for his suicide could be found in a book by Thomas Mann, "Doktor Faustus". After all, theoretical physics is very close to music.
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Message 1581765 - Posted: 4 Oct 2014, 10:35:40 UTC
Last modified: 4 Oct 2014, 10:53:08 UTC

On the topic:

To send information. it has to be entered (by typing, streaming etc.) So you would have to change the state of a whole bunch of ordered and tagged particles. Their remote partners might change state in instantaneous sympathy but you couldn't "Enter" the message faster than the speed of light.

"There was an old lady from the Isle of Wight, who traveled must faster than light.
She left one day in a relative way, and came back on the previous night."
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Message 1581885 - Posted: 4 Oct 2014, 16:13:22 UTC

Now the real question is can you generate a pair of entangled particles at a distance? Otherwise your issue is you have to move the particles apart slower than light to set up your data transmission.
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Message boards : Science (non-SETI) : Quantum Entanglement possible instant communication over very long distances


 
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