Quantum Entanglement Lab - by Scientific American
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- เผยแพร่เมื่อ 19 มี.ค. 2013
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SA editors George Musser and John Matson pay a visit to Professor Enrique Galvez of Colgate University, who has built a machine to observe quantum entanglement, the strange phenomenon that Einstein called "spooky action at a distance."
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Finally wrapping my head around this concept thank you!
Hello I have researched on quantum entanglement and explain the medium between them will it be proceed?
whats the size of the photon and whats the size of the polorizers opening ? i have dough we have the technology to manufacture a polorizer with an opening the size of a photon.
I been reading and seeing a lot about this entanglement and I cannot figure out why paired photons could not have been the same from the start?! The that I measure one obviously makes the other the same since they were the same from the start.
I think Bell's Experiment did confirm that they had an uncertain polarization at the start, but I don't really get how this had been done... Explanation would be great if someone has one!
I think ,minutephysics vedio may clear your ambiguous
Watch the video called "Bells Inequality" by DrPhysicsA. It perfectly explains that
This is what I’m trying to understand. This proves that both “split” photons have the same polarization... it doesn’t prove anything else. What am I missing?
Entanglement could just be present versions of a particle interacting with the past version of itself, that would confirm the existence of tachyons. Tying lose ends
Yes, quantum states with the same energy have the same probability. The energies and momenta of the photons from the entangled pair are free to take on any values as long as they sum to the energy and momentum of the original photon.
In this case, the quantum states are all the possible combinations of energy values and momentum values that the two entangled photons can make that sum up to the same total energy and momentum.
3:33 - I would like to know more in detail by the phrase "the entangle partner snaps into place", you're saying that there is a delay when counting the pair of each photon individually?
around 5:35 they start to say bell discovered it's not done by proximity, i don't really understand? how is reality not defined by proximity
how do they that it is only one line of photons?
one of the best spooky explanations yet
thx
What at minute 1:17 is real? or is it animation? (I mean the discontinuous laser)
[This is my reply to a comment earlier but thought others would find it useful] I know this is late but the best explanation comes from quantum mechanics founding principles which more or less says particles don't have a definite state unless measured. Particles aren't what we think of particles as when they aren't being observed but rather a wave that allows them to exist in multiple states. This video addressed it with Schrodinger's cat which IS BOTH alive and dead at the same time. the act of observation is what makes it become one of the two states. So even if they have the same conditions, they don't have to have the same measured observations because quantum mechanics in nature is probabilities not exact positions. Quantum entanglement is having both the observations linked. The example given is that two particles have a 50/50 chance of passing through the lens; So, you flip a coin and heads it goes through and tails it doesn't. A pair of entangled particles means if one decides to flip the coin (on its way through the lens where it has to) the other has gets the same coin flip. This is important for what shown in the video because if the particle passes through A then the entangled partner has the same chance of passing though B (even though this is the only lens it goes through) as if it went through A first.
this video needs more detail to explain it. Make some block diagrams of the experiment. THe video practically goes from saying the laser is uv to then talking at a whiteboard - without "breaking it down" as promised". could try harder 3/10
"These photons bounce-Off mirrors into crystals that are stacked against eachother" - huh?
whole quantum theory is a religion
still nonsense 7 years later
I came looking for a quantum entanglement explanation, but I’m as lost as before I started watching this video.
They didn't give the full picture.
So what is quantum entanglement?
What's the music at the end? 6:50
deez nutz
"As with any coupling,entanglements are generated between the system & environment, These have the effect of sharing quantum information with,or transferring it to, the surroundings" Wikipedia on Quantum Decoherence. If this be taken at face value, [is it true?] what does it say about the Gaia Hypothesis, for example? Or any interaction in the material world?
the fact that you entertained the possibility that brains are entangled, tells us something, the fact that other's have come to the same conclusion, and even other's have been playing with this, suggests that all information is shared, when conditions are right what you propose or extrapolate is possible, developing an ability to focus and recognize what has been there all along. - my comment is in direct response to the question posed by the two guys at the beginning of the video !
9 years later and I am responding to you... My theory always was proven correct and every 4 and 1/2 years, We go through yet another mental cycle. You think the same things, same patterns, even same people, but with different variables. You seem to have a very deep understanding And I will just keep it at that as things like this keep me awake at night for years on end!
Why can’t they be connected threw the Higgs field?
Your explanation is gradual and clear, I only wish you got into the actual data of the tallies/coincidence rate
I'm lost. If speed is distance over time then how can we say that time stands still as light travels. Does it not take time for it to get somewhere? Isn't that what a light year is?
I think what you're explaining here is more of a matter of we as people defining the difference between "one photon in two places" and "two photons in two places". Classical mechanics tells us that one object (a better word to use here would be Particle) exists in only one place at one time. But quantum mechanics tells us that that quantum particle actually exists, at the same time, in every possible instance it could exist in. This concept is known as superposition...really interesting stuff
Meybe those particals use radio waves,internet waves,earth is having every possible waves,so they remain conected,what if they were separeted in space with no waves inbeetwen,what i wana say is maybe particals comunicate with each other indirectly troguh something we use om earth like internet waves,radio waves or something,question is why are they staying conected
Doesn't this violate poli's exclusion principle
Maybe there is an unseen "negative" photon (like holes in electric flow) that moves in the opposite direction that influences the origin of the fired photons hence influence the other.
That would have implications on the direction of time! i.e. What must still happen has already happened. Its just that we view time in a "forward" flow with no way of knowing that it actually flows both ways!
PART ONE is here: link is not working..
6:03 We measure the state of the first particle but how can we know the second one's state without measure it as well?
+Ronan D. That's the part they always leave out, because they're trying to be "scientist magicians." Information cannot be transferred faster than light. There is no immediate effect. One scientist has to call, email, or visit the other to be able to compare. It's a little bit infuriating, isn't it?
They have NO IDEA WHAT THEY ARE TALKING ABOUT
@@jamesrick3524 Yes, we do.
the second particle is measured and that's how the coincidences are generated.
I would have been nice to get a diagram. The explanation is loose.
I understood that you have to thin crystals "stacked up"? If they have different polarisation light won't go throw both, so I don't really understand what is going on here.
Search the video: creating entangled photons George Musser
A 58 sec video animation.
The input pump laser is diagonally polarized via half wave plate not shown, however there are better setup videos if interested, unfortunately many popular informative videos contain just fragmentary explanations of the most technical details.
what i mean is: if there would be something in the atom actually waving (hidden variable) - but we would not know how to observe it.
so when a seemingly random thing would happen we would presume it is totally random, but in fact it would actually be a consequence of this hidden wave.
- so the fact that two particles far apart "know" for each other state on distance - is because the waves of those two objects are synchronized.
How does this experiment prove wrong Einstien's analogy of a pair of gloves? What if at the time of entanglement, the spins were already determinate or opposite, so act of measuring has nothing to do with the outcome of the other?
Also, in this experiment, what information is passed instantaneously from one entangled particle to other, which confirms spooky action?
Sumit Pal i don't know why doesn't any one come up and answer this question. me too bro waiting for answer to this question. please let me know if you get the answer.
+Sumit Pal That's exactly what is happening. The particles are fields. There's a mapping of "everything," and all they're doing is changing "universes" when they alter one particle. There is no "immediate effect" on the entangled particle. We know this because we know information is not being transferred faster than the speed of light.
In other words why not the 2 entangled photons were in a deterministic state in first place? (ex: both initially started with vertical polarization instead of superposition.)
Any one?
Fully my opinion. The whole Qteleportation is a scam only.
How can indivisible particles like photons be split in two?
Don't think of it as "split in two", think of it as "stretched across the room".
Quantum Entanglement is pervasively known as The God Effect, it’s the synchronicity between spatially separated particles on an infinitesimally subatomic scale regardless of their distance. When entanglement occurs, there’s a correlation between their momentum, velocity and spin in their state of entanglement, and their speed in which information propagates between particles seem instantaneous, regardless of their fluctuation in space. An inseparable relationship first introduced by Erwin Schrodinger in 1935.
This is a scam only. The states are defined at the moment of entanglement. and won´t change at measurement on the other particle.
@@rainertheraven7813 Dr. Bell proved you wrong in the 1970's.
I think the problem we are facing now is how we always interpreted their (sub particles) world the way/ the best we can explain. I mean quantum world is far I'm concern is more complicated than we're expected.
For example, me and my buddy had this discussion about how viruses are so resilient in hard condition temperature. Now, I'm thinking how on earth we could tested this validity but our species are evolved from their point of perspective.
I mean, these viruses had "more experience" dealing with hard condition temperature than we are possibility know. That is why we are here today. It is like trying to solve a problem with the answer in limited domain. I think getting an opinion from outside the box is really crucial.
Doesn’t this just prove that when a photon is “split”, both halves maintain the same polarization?
Yes but which one? Check out the Bell Inequalities.
The scientist at (3:17) states that photon's can't be split!
My thought exactly. how did they prove there is a super position in the first place
What do you mean with "hidden variables"? Schrödingers cat itself is an example of quantum entanglement. The state "atom has not decayed and the cat is alive" is entangled with the state "the atom has decayed and the cat is dead"
Coincidences sounds like another way to say "I don't know".
@ time 4:54. there is no particle but just a wave. The filters are breaking up a single wave and reflecting or deflecting the parts in the new direction. If the filters are at proper distance and angle then the wave will be in sync with it's twin. If not then it will be out of phase. Measuring the wave will change it because your either absorbing some of it's energy or adding to it.
This video is great. I know very little about physics , nevertheless, It seems to me that the interpretation of the experiment results depends entrily on the uncertainty principle like Heisenberg thought it worked (particles form is unditerminate until they are measured). In my view, if we do this experiment with no previous conceptions et all, the results could be interpreted differently, for instance, afirming that the uncertinty principle is wrong and simply every photon had a determine form since the biguinning, there is no entanglement and what we have left to find out is why sometimes there are two phonton. Maybe my point of view is just the resistance to 2 suppose consequences of quantum mechanics : 1) believe that reality doesn't exist until it is measured 2) accepting that we can forget about causes to affirm somthing in a complete scientific way. What do you thing?
i wonder: doesn't entanglement prove that there are hidden variables in quantum physics?
this would solve the Schrodinger's cat paradox without the multiple universe interpretation...
am i missing something here? someone?
clearly describes entanglement from 6:10 onwards
information between entangled particle does travel faster than light and is actually instantaneous
Einstein should not have said "information" cannot travel faster than light. Only that matter (mass or energy) cannot.
This is beyond my wheelhouse but I remember scientists showing that it's not information being transmitted, I forget how they did it but it made sense at the time.
Basically it is impossible to transfer any information , faster than light. Entanglement only proves non-locality. To trust me, you may go through the limitations of quantum teleportation protocol.
No, no, and No.
This has perplexed me for a long time. When the pair is produced how can you prove that their polarization isn't already determined at the time of production? Like any measurement, You don't know what it is until you measure it. Because of the law of conservation they are produced in accordance with that law. If you measure one then you will know the other by deduction. How can you say that measuring one changes the other when they were initially produced to obey the conservation law?
This is a good point. The reality is that even though the Bell inequality is hopelessly confusing, it actually does not rule out all local hidden variables that could exist in these experimental arrangements.
entanglement is also valid for electrons (regarding spin for example).....
This is not so hard to understand- which means i might have got it wrong...
But this is waves we talk about. so if you toss a stone into the water- you get circular waves. and if you at one end detect the wave- of course you imidatly know the position of the wave at the other side as well- no matter how far away it is- and given it has been able to move freely.
So how do particles get entangled to start with?
proximity.....spin relations...
@@maxodgaard1335 So once entangled with each other, how do they un-entangle? Or do they?
Modern entanglement is achieved with polarized lenses. When the experiment was first developed(1892), it used a beam splitting crystal.
@@95TurboSol Yes, measuring or manipulating them breaks the entanglement.
My Theory : The photons don't split in pairs but join in fourth dimension hence creating a four dimensional photon. Obviously if you change the polarization of one will change it for other , by re twisting itself through the fourth dimension.
+Vinay Srivastava Wow I have that same theory!
I think dimensions surely play a role here...
Except answers like have already been proven to be wrong.
Vinay Srivastava Can you point me in the direction of what you think that fourth dimension is?
Vinay Srivastava When do you want your Nobel
So I am trying to come up with simple analogy using spinning coins. Please correct me if I am wrong!
Imagine having two coins on table. Face one Head up and the other Tail up. Now start them spinning at the exactly same time with the same force. It is not Head or Tail till its spinning, so to stop them you slam your palm on bot of them at the same time. Now when they are not spinning any-more you can see one is Head and other is Tail (or one Tail other Head depending on moment you stopped them). Makes perfect sense.
Now the interesting part... Spin the coins again, take one coin far away from the other but make sure the coin doesn't fall and keeps spinning. Then slam your palm on only one of the coins and strange thing will happen, the second coin (no matter how far away) will fall at the exactly same time no mater the distance . Also once you stop the coins the entanglement is gone and they are now just ordinary coins.
Am I right?
No. It's more like this,
Spin the two coins, when you slam your hand down on the first coin and find it to be heads, you KNOW the second coin will always be tails.
Even if you spin them in different rooms(one of them is on the moon), the two coins will always be opposite.
Even when you stop one coin and look at it WHILE THE OTHER COIN IS STILL SPINNING, the second coin will still always be opposite the first.
If "photons are indivisible", then what is meant by "spontaneously dividing" into two polarized photons? What am I missing here?
The UV photon react in the crystal, causing it to emit two entangled IR photons
The photon is passed through a crystal and is then converted into to photons whos energy levels sum up to the energy level of the initial photon in a process called parametric downconversion.
th-cam.com/video/2Ut0F4a9dQk/w-d-xo.html
think of the photon as "stretched" rather than "divided"
@@snarzetax yeah, that's a better metaphor. It's counter-intuitive, but...intuitive.
Does this mean faster than light communication is possible?
no
Im not great with math. But the filters are clearly overlapping and like a diaphragm of double slits. The filters are still influencing data
Where do we see this in nature?
@@collinwys7891 Robins use it to detect the Earth's magnetic field th-cam.com/video/jepgOQEvWT0/w-d-xo.html
Can you capture and store some of those entangled photons, ship them off, then use the filter to measure them? That way you can turn the filter horizontal to measure a horizontal photon and you know its pair is also horizontal. Encode that with 0. Then turn the filter vertical to measure a vertical photon, while its pair is also vertical. Encode that with 1. Then you can transmit bits and bytes faster than the speed of light.
I have wondered the same thing.
Can we capture an individual, entangled photon in order to "read" it later?
No, we cannot. If you figure out how, they'll probably give you a nobel prize.
There is linearly polarized light, but there are no linearly polarized photons the photons are left or right handed depending on the direction of their spin with respect to their motion.
What is not fuzzy and indeterminate is quantum physics and how we can predict the structure of atoms thru mathematics. Written in my book on the theory of everything
I randomly thought of this question. What is the maximum number of particles that can be entangled? 10, 1k, 1e6? It makes me wonder at what point do wavefunctions collapse as a consequence of number of particles. Maybe there is no limit, but then why isn't everything in the universe entangled?
that is a very good thought. how would one go about testing the limit of particles entanglement relative to the number of particles present in the experiment.
Think of it like a computer. Higher being controls keyboard and mouse( Forces) that send signals through wire (time particles/entanglement fabric) into components (particles,waves), which use more "wire" to communicate with each other. The ending result is what ever the higher being intended (us being his intentions.)These components can operate by different means separately and even as a whole (quantum mechanics), then the program (our "reality") operates (regular physics)...
I'm mad at you that you didn't asked for a link to the paper to put in description that would describes exactly how the experiment was done.
I have a strong suspicion he made a mistake or hiding some manipulations.
Why can't television channels, like discovery and the science channel, show anything remotely intelligent like this?
too few viewers, and of thees....e even fewer could comprehend the essence....
A new article on entanglementsolved pointed out a flaw in quantum mechanics, EPR paradox, and Bell’s theory.
can you point me to this article? I'd like to read it.
This doesn't explain anything. Even if the photons were not entangled, there would be no coincidence on orthogonal polarizing filters as their polarization was parallel from the very beginning when they were generated. Can anyone explain or correct me If I am missing something
If non entangled photons were, for example - - or | | and polarizers set orthogonal between them \ / (+/-45 deg) there is a 50 50 chance for each photon to pass through, hence 25% coincidences, as explained after 2min, precisely after 3:30 see the two cases of Entangled and Not Entangled combinations passing through +/-45 deg polarizers and their coincidence count. 0% for entangled, 25% for not entangled.
@@car103d thanks bro. Now I can wrap my head around this
Interesting thought but actually photons don't travel at the speed of light through a medium, such as air and filters in this case . This is why we have diffraction though lenses - due to velocity changes. So presumably time isn't infinitely slow for these slowed photons and of course the corollary to this that is space will therefore exist in the photons' universe.
It does explain entanglement. Think of photons as gloves. If one of the pair is left handed, the other is right handed. Now as it is explained in the video, 50% of the times a glove will pass a diagonal filter no matter it is left handed or right handed. So you should get 50% x 50% = 25% of cases where they both pass. However this is not what you get! Even if the source plays nice and honestly emits gloves having an already set relation e.g. one left and one right handed gloves together like this: LR, LR, RL, RL, RL, LR, RL, etc. will not change the fact that the two gloves should pass the filters simultaneously in 25% of the cases. You can also understand it another way too. See the upper part of the board describing the entangled case when both filters are set to "North-East". You got coincidences (both gloves passing simultaneously). Now without changing the upper filter, you turn the lower filter to "North-West" direction and what happens? You got no coincidence. Just by changing the lower filter you magically changed the number of gloves passing through both filters. So measuring the glove flying toward the lower filter changed the number of simultaneous passes through the filters. The gloves could not possibly negotiate it at the source: "Hey, by the time you arrive to your filter, and your filter was turned to "North-East", I promise I will not pass, otherwise I will pass". The other glove would certainly ask: "OK, but how shall I know the position of your filter?" The kind of negotiation taking place between the gloves is therefore immediate when they arrive at their respective filters or our fundamental conception of time is absolutely wrong, which latter I believe very much.
This explains a lot about what is going on with these Mandela/ Quantum effects.
No
Maybe there is no separation of the particles as they are thinking but they are one and same -its just their point of view that they are separate in space -different aspect of same thing. All points in space are equal and there is no distance. Its just the point of view in space of the observer If something is here why must they assume that something is somewhere else, it maybe just a matter of perception. I think this type of physics is getting into a realm of consciousness which they have little understanding of.
I actually saw this comment after i left another response on you. But there's actually an experiment(google "bounding the speed of spooky action at a distance") where they proved that the exchange of information between entangled particles is actually faster (by at least 10,000 times) than light.
Mallory Knox
its not fast. fast means movement. from one location, to another. therr is no movement. there is no transferring. there is no connection between the two particals thru space between then. infact there is no two particals.
its one partical in all space in all time.
simple no. but it happens
IS INSTANT COMMUNICATION POSSIBLE WITH QUANTUM ENTANGLEMENT? If it's possible, then it would be an excellent mode for faster communication.
Apparently teleportation may be possible
no
nope, and neither with entanglement either.
Recent papers show that human brain uses the quantum entanglement technique in molecules inside the neurons.
I still don't understand how this contradicts the "Gloves" idea of Einstein. I mean if we measure one we know that the other is in the same state or polarize in the same fashion.
But as Einstein said that only means that if you find a "right glove" then you know that its match it would be a "left glove"
I know that there are scientist that said this approach is wrong but still I haven't heard any clear explanation of why is the case. If any one can explain this for dummies let me know
I am not sure from the experiment yet, but giving it a thought I realize this:
every photon that is created get the wave function till measurements disrupts its quantum state.
so for example, if you measure one photon, it would have a certain polarization, if you measure the one behind this photon it would have a different polarization, and so on, as photons appearing one after the other are not entangle in the moment they measure them and the wave function collapses, they will not have same polarization, it would be random.
But with particles that are created entangled.
Both photons have the wave function, and every time they measure one the other gets same polarization.
which doesn't happened with the other particles that are created one after the other.
I am not sure if is how I explained it here, but if it is then sure einstein is wrong.
Hongyi Xin
*photons always go straight lines*
yeah, but I guess here we are measuring polarization not the particle property of the photon, I mean here we are measuring how it passes through some filters, and not how it smashes agains a wall per say.
But yeah, still not sure tho. it was just a thought.
Pablo Rozzotto For me, this just proves that when particles are twin particles, they have the same polarization. And that is not strange at all and doesn't contradict anything known.
This experiment isn't a way to measure whether spooky action is going on, it's a way to examine whether entanglement is going on. Entanglement could occur without spooky action (i.g Einstein's gloves); however, Bell's experiment indicates that spooky action is actually occurring with entangled particles.
Pablo Rozzotto right bro but i will believe in this experiment when this is true - " two polarized are entangled when we measure it our first measurement told us that both are horizontal by measuring the one and again when we measured the same entangled photons after passing through polarizers we get both as vertical photons ,i.e,. we get different result every time by measuring same entangled photons;" by the way is this experiment is the proof of quantum entanglement /
Maybe this goes some way to explaining why twins feel each others pain even thought they're both estranged.
Nope!!!!
ok this was the experiment done in a diffrent way, what id like to see and can't seem to find is the double slit experiment where they sent 1 photon at a time at two slits and observed it was creating interference pattern but when they wanted to see which slit it was going through and put a detector it went back to creating a single pattern ??? that id like to see instead of only hearing ppl describe it or showing animated clip on it,, id love to see how it makes multiple fringes and then becomes one fringe as soon as the detector is turned on
there are a couple of videos about this if you search
@@JB_inks i have searched and not found any, how about you leave me links to even just one? and i do not want to see animated vid but actually real life footage of this experiment
@@ARCSTREAMS there are at least 2
@@ARCSTREAMS m.th-cam.com/video/h53PCmEMAGo/w-d-xo.html
@@ARCSTREAMS no idea if TH-cam has blocked the links I've sent
If photons change on measurement, how do you know its previous state when you can only know the state its in by measuring?
It was like why did they add that in. Does a tree make a sound bullshit. Should have spent more time explaining instead of essentially saying if you dissolve salt in water, and measure the amount of Na, you can deduce how much Cl there is. What is the point of this video?
Right now it sounds like they’re playing with kaleidoscopes and saying if they see blue there will be green on the other side.
That doesnt mean it horizon or verticle at the same time. It just mean it could be one of the two and we dont know until we observe it. It never was horizon or verticle at the same time.
So if one entangled photon doesn't go through, the other doesn't go through. Where is the mystery in that?
Sure since they are both polarized the same way....
What? Did I miss something?
This seems contrary to what I have read. If two photons are entangled and you measure one to be horizontally polarized then the other one should be vertically polarized. Same with electronics, one will be spin up, the other spin down.
Hi Eric. Thanks for clearing this up.
thank you for nice video !
Great video
Quantum Entanglement is real not only at microscopic/subatomic scale but also at macroscopic cosmic scale. We now have a working Quantum Theory of Gravity that is testable and complete with reproducible empirical experiments with the same results if repeated over and over again and again, confirmed by empirical observations in nature with 7-Sigma level results, guided by empirical laws and physical/mathematical equations that are predictive and precise. FYI: Quantum Gravity or Quantum Gravitation have three types that are equivalent to and manifested by Quantum Gravitational Entanglement - a Quantum Entanglement at Macroscopic Cosmic Scale namely: 1. Quantum Anti-Gravity = Spin Up Quantum Entanglement State; 2. Quantum Neutral Gravity = Superposition Quantum Entanglement State; and 3. Quantum Gravity = Spin Down Quantum Entanglement State. More detailed information could be found on the published papers 2 years ago in London, Paris, and Zurich, online and at the two scientific Journals ACADEMIA and REAL TRUE NATURE or alternatively, you can google the name of the author ROEL REAL ROVIRA
I think it has already been implemented in quantum encryption.
If two cars leave St. Louis. One car is red and the other is blue. One of the cars (we don't know the color) drives to NYC, the other drives to LA. If I see the blue car in NYC, I can automatically assume the LA car is Red.
if two photons are created with the same properties, then of course, I can measure one and the other will have the same properties as the first. What am I missing?
You comparing apples and oranges, when we are dealing with the very "small" like photons "things" are in superposition, the photon is red and blue at the same time. Now let's say that when a photon is polarized horizontally it is blue and when it is polarized vertically it's red. In St. Louis you did not look at the entangled photons they are still in superposition, red and blue at the same time, when the photons are at their destinations and you still have not looked at one of them the photons are still in superposition. When you look at the photon in NYC the superposition will immediately stop and the photon will be blue or red. When it is blue, the one in LA will also be blue, when it is red the one in LA will also be red, spooky action at a distance!
The Sundays Music
Once again, I don't think I understand your analogy. When these particles are created, we have a priori knowledge of their "identicalness". If I don't know what color the cars are that are leaving St. Louis, but they are both painted the same color before leaving St. Louis, when one arrives in New York and I see that it is blue. I can assume the other is blue.
The two photons are created to be identical and so it is no surprise that when I measure the properties of one, the other will have those same properties. OR if two electrons are created having opposite spin then the measurement of one should tell me the properties of the other.
What am I missing?
James Murray A quantum particle exists in all it's possible states, when a particle interacts it will have only one state, measuring or looking is an interaction. Like your cars are blue and red at the same time, only when you look they are red or blue. So when particles get entangled they still exists in all their possible states, we do not have a priori knowledge of their state, when one of the entangled particles gets measured, both will have one state as result depending on the one measurement.
ahh, but we DO have a priori knowledge that the particles were created identically. We cannot apply entanglement to any two photons (or other small particles). They have to be created in a special way that gives us a priori information about the pair. So I don't know what color my cars are, but once I see the blue one, I already know the other is blue BECAUSE of how I created them. Same with the particles, I'm creating them as a "matched" pair, why would that change over distance?
(I'm not trying to be obtuse, but I don't see how distance would ever change the property of the identical particle. So I can think of the particles having the same wave function that collapses the same way as the other one.)
James Murray No not at all obtuse it's very interesting and you might very well be right, they might have the same wave function but still replace LA with Alpha Centauri, mind blowing to think that the wave function collapse for the photon at Alpha Centauri and NYC when you take a look in NYC, although you have to wait 4.37 years in NYC to take a look, and provided you can keep your photon "alive" plus entangled. Thanks for the discussion, btw have you seen this:
www.extremetech.com/extreme/156673-the-first-quantum-entanglement-of-photons-through-space-and-time
good description........entangled particles are kind of freed from the bandages of spacetime...............
Yes, but only because conservation of energy and momentum creates this link. Of course, quantum interference (comes in a symmetric form - bosonic statistics or in an antisymmetric one - fermionic statistics) can also create a link like that, but between identical particles.
What happens when you alter one photon that is entangled in the past? Is it possible to alter the past, information wise? Think of it, the pho-tonic light that we see from stars far way is really billions of years old. So what if someone alters one of those photons' material composition that is on earth, is it possible that alteration can effect the photon on the other end of the entanglement? hmm
I may be wrong, but I believe that's how time machines work.
By measuring you cannot control how you alter the state.
everything in the universe is connected because everything came from the big bang , even time. or did it ?
quantum entanglement happens for massive particles as weell. You have a harder time claiming there's no time here.
I am sure this is ignorant on my part, but I find it hard to believe that the polarization is not already determined, in some fashion, before it is measured.
Dr. Bell proved it is not predetermined in 1972.
@@snarzetax I believe you.
Quantum entanglement does not prove faster than speed of light. It does imply a connection at the sub atomic level OUTSIDE SPACE TIME. On a side note, check out Fredkins theory on the universe as a gargantuan quantum computer generating information. You actually need 0 dimensions to run a computer program which generates information. Fredkins called this "THE OTHER" for lack of a better word.
Researches have shown that Mars didn't survive because it has no magnetic field around it's core, and that Earth's super magnetic field is a important factor in the Earth's survival. Can that magnetic field be created on Mars? I mean if a great amount of magnetic rock are buried in Mars's core, will that magnetic field be able to be created? And will life finally be possible on Mars? thanks.
we produce an output, small, but never the less, an output, 1.63 x 10 to the negative 23 coulombs at approximately 7 hertz. yes a frequency Electrons share information !
if we resonate at the same frequency 7 hertz physics tells me that it's not only possible but that more and more people will develop the ability and be sensitive enough to discriminate Identical twins all life resonates between 6 - 8 hertz. I will not discuss this with the main stream tools who think they know something .
Time travel on a quantum level they are able to change because of time travel to be at every destanation and every possible out come or state they are ment to be in till observed not because we observed it but at that point is what and were it was ment to be also think they should look at quantum energy as dark energy might find something
Here's where I'm having issue with in this experiment: What exactly is 'splitting' the photon.
Because if the very act of passing through a polarizing crystal splits the photon into two photons of the same polarization (through the very act of 'splitting') then you would always get the same results when they do hit in such a way as to split ala einstein's hidden variable theory. Non-coincidental photons would just be the raw photons that managed to pass through the crystal without performing the 'splitting' interaction. The crystal would have bestowed a variable upon the split photons leaving the entire experiment explainable without entanglement. (the photons could have split on one crystal or the other or neither, but if they hit one then they both took on its polarization, meaning that when measured they'd always be the same)
Can someone please explain to me what these 'crystals' are doing? Ideally send it as a message to my account so I'm sure to get it and post it as a reply for others with the same question. I'm really curious. I'm going to hunt elsewhere for the answer too and reply to myself with any findings :) (like this if you're curious and want to pin it near the top of the comments)
Yeah, I also dont understand how two particals being generated by the same filter and theirfore having the same polerization is the same as "entaglement", where one partical magicaly changes in response to the other. Maybe I am misunderstaning the explanation. Please correct me if I am wrong.
Not bad thinking. Nevertheless, rather abstract indeed. Here are some solid facts. Firstly, for two objects, particles - with or without mass - to occupy the same space ("in the same place") violates a fundamental condition of this universe. Secondly, for photons (or any particle) to exist without time or space is a contradiction in terms. Without time or space nothing can exist, not even in your head. If you don't believe it try it.
No, it does not mean that faster than light communication is possible in the universe. As far as it is known Information cannot travel faster than the speed of light in a vacuum.
Maybe the photon went back in time to communicate with the entangled photon. So it's not really spooky action at a distance but more like time travel. :D
No, it's not that complicated.
This is cool. It seems (to a layman like myself) that they have demonstrated only that the 'entangled' particles are coordinated in state but not that their states continue to be entangled after one of the states has changed. I think I must be missing something?
Again another explanation video but no live experiment video I wanna see one rather than explain me one
this shit is so interesting. the greatest thing about all this is the non locality seems to occur faster than the speed of light! WOW ! I mean how can that be? that is the question that came to my mind after watching this. sort of like why is all the energy in the universe tied up as matter? could entanglement and its un-entanglement release the energy in say a grape? great way to produce energy and not have to use a nuclear rxn.
In that case we will never find the answer as there are no time waves to be discovered.
Enjoy.
Connection! and barrier!
A place where we can see a mistake that no one corrects
So there are 2 earths??? If everything could be entangled with another thing then there would be a possibility that the atoms that made up everything in the milky way were entangled with atoms light years away creating another milky way. The odds are astronomical lol get it?
No, the "many worlds" theory is hogwash. ;)
At 1:27 the narrator says the photon gets split in two.
At 3:09 the professor says that photons are indivisible.
Please pick one or the other.
BTY I keep hearing the word filter used with a polariser, who says this is so? Might something more complex be going on in those molecules.
Overall this is a totally useless video that demonstrates/explains nothing, I would think that SA could do much better.
I agree. There is an inconsistency. Something which is indivisible can't be split, by definition. I think these physicists are spending lots of time and energy to look for what they want to see, and then see it. They construct machines that should prove what they imagine it should prove. They prove that they are brilliant mechanical engineers. But they don't prove anything else. And money is lost for nothing. They should stop thinking in terms of particles and start to admit that our entire world is only made of energy waves. If you think about entanglement in this way (all is energy waves) all becomes much clearer (without machines to experiment material events that are only a matter reflexion made by our five senses). Machines can only be extensions of our five common senses. And these senses are designed to experiment matter. But we have a sixth sense which is intuition, that can connect to consciousness which is made of electromagnetic waves (from brain and heart). Search how our pineal gland works and you will understand. Search about memory of water (and how electromagnetic waves are caught by crystals of water). Waves in an "empty" space defined by others waves... That's beautiful! And that makes sense. Matter does not exists until we make it exist in our brain. Matter is just a concept, a useful concept but that limits our understanding of our world. There are so many things to discover...
+C Glenn Right. The entanglement is clearly created "locally," and then they act like Bell's work cannot be questioned. "Indivisible" means they exist in the same universe, no matter how far you separate them. They are one "thing," which is interesting, but it's not inexplicable. There is no "non-locality" in terms of an immediate effect if you change one particle. The particles exist as fields. There is simply a field with "multiversal" information at any point. When you observe one measurement, you are also placed into a "universe" and the other possibilities are made LOCALLY inaccessible. You exist as one of a "group of versions" of yourself.
We know information cannot be transferred faster than the speed of light. I've been reading about this for a few years, and I don't understand the difficulty with the majority of scientists. I think it's related to ego (?). Read Hugh Everett III's thesis from 1957 (not easy, but worth it). I'm not suggesting we've even scratched the surface in terms of understanding, but it won't help to fool ourselves into believing in magic.
ucispace.lib.uci.edu/handle/10575/1097
C Glenn I think you understand quantum superposition now
Energy of photon each pocket is=hf,h=plank universal,f=frequency,
At specific frequency energy of each photon is as hf
But it splits means energy of two daughter must be half of hf, means here frequency differs
Thought about something. If this particle was real it would have to be faster then light.irrational. But what if this particle wasn't, a particle...what if it was a connection. The connection between entangled particles and non-entangled particles. The particle connection would act as a universal "mail-person" who takes short cuts (through space), It relays universal command codes to particles that tell them what to do, where to go,even how to react to forces and particles around them...
I think, you should go back to the txt books and check them over again and find something you have misunderstood, my friend.
Discovering time waves we will find the answer to a unified field.