Quantum Entanglement Lab - by Scientific American 

Finally wrapping my head around this concept thank you!

Your explanation is gradual and clear, I only wish you got into the actual data of the tallies/coincidence rate

[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.

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!

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.

one of the best spooky explanations yet thx

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

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

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!

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.

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

Doesn’t this just prove that when a photon is “split”, both halves maintain the same polarization?

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.

I came looking for a quantum entanglement explanation, but I’m as lost as before I started watching this video.

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.

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 !

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.

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?

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?

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?

"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?

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?

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.

Why can't television channels, like discovery and the science channel, show anything remotely intelligent like this?

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"

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

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?

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.

Maybe this goes some way to explaining why twins feel each others pain even thought they're both estranged.

A new article on entanglementsolved pointed out a flaw in quantum mechanics, EPR paradox, and Bell’s theory.

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 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.

Hello I have researched on quantum entanglement and explain the medium between them will it be proceed?

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

Great video

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.

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?

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)...

thank you for nice video !

If "photons are indivisible", then what is meant by "spontaneously dividing" into two polarized photons? What am I missing here?

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.

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?

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

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.

entanglement is also valid for electrons (regarding spin for example).....

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

This explains a lot about what is going on with these Mandela/ Quantum effects.

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.

What's the music at the end? 6:50

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.

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?

Recent papers show that human brain uses the quantum entanglement technique in molecules inside the neurons.

What at minute 1:17 is real? or is it animation? (I mean the discontinuous laser)

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

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.

So what is quantum entanglement?

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.

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.

good description........entangled particles are kind of freed from the bandages of spacetime...............

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?

Im not great with math. But the filters are clearly overlapping and like a diaphragm of double slits. The filters are still influencing data

A place where we can see a mistake that no one corrects

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.

So how do particles get entangled to start with?

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?

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?

amazinggg

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

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

My chirper @quantumphysics brings me to here loll

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

how do they that it is only one line of photons?

IS INSTANT COMMUNICATION POSSIBLE WITH QUANTUM ENTANGLEMENT? If it's possible, then it would be an excellent mode for faster communication.

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.

Why can’t they be connected threw the Higgs field?

Enjoy.

So cool to see a Hispanic working in Quantum Entanglement

PART ONE is here: link is not working..

The photons pass through the two crystals one by one? Then, sometime the photons get split in two? Photons can’t be split into two. Can’t do it. Wouldn’t be prudent! The photons themselves don’t know what position they are in until they are measured. Photon KNOW THINGS? REALLY? That’s amazing. Just as amazing, they are somehow conscious that someone just measured them, 😮 So, he has a”polarizer” that what, forces the photons to align, or just measures the alignment? Two by two photons? How does he know when an photon coming through is an entangled one? Whether or not it gets through. I’m getting boggled, because I’m trying to follow you when my questions concerning things I should know to enable me to keep following are unanswered. At that point, if I can’t stop you, then I must begin to simply go along with everything you say, including your conclusions. Therein lies the problem.v There have been social experiments by psychologists that show that 75% of people will believe and agree with the majority, despite what they may or may not have observed right in front of them. LAST BUT NOT LEAST, those percentages of the results are too perfect. You ran the tests over and over and always got perfect splits of 50% and 25%. Yeah, right. All nice and neat in perfect little packages. You really think we’re stupid, don’t you?

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 .

Connection! and barrier!

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)

quantum entanglement happens for massive particles as weell. You have a harder time claiming there's no time here.

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

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?

I think it has already been implemented in quantum encryption.

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.

How can indivisible particles like photons be split in two?

Doesn't this violate poli's exclusion principle

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.

Colgate University invented the first quantum toothbrush.

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 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.

Does this mean faster than light communication is possible?

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.

Where do we see this in nature?

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...

If photons change on measurement, how do you know its previous state when you can only know the state its in by measuring?

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.

Discovering time waves we will find the answer to a unified field.