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Quantum Entanglement possible instant communication over very long distances
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Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
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 |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Mystery of the 'Cheshire Cat' of quantum physics solved: Scientists manage to separate a particle from its spin 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... |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Mystery of the 'Cheshire Cat' of quantum physics solved: Scientists manage to separate a particle from its spin 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:) |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Thanks Lynn but my brain hurts totally lost me on that 1 . |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
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. Tullio |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Thanks Lynn but my brain hurts totally lost me on that 1 . Other Universes. Better? :-) |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
hehehe thank you LYN headace gone now brain stop'd hurting :) |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Maybe in another u-verse:) I like my me-verse... everything makes sense in it :) |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
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... :) |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Cris all i say is aaaaaahhhhhhhhhh what ? Brain hurting again no understand goobbly gook |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Cris all i say is aaaaaahhhhhhhhhh what ? Brain hurting again no understand goobbly gook My felicitations to your brain too Glenn :) |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
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. 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. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
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. Tullio |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
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. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
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 |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
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. Tullio |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
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." |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
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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