- #1
iamconfuzed
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Hello I just have some questions about quantum teleportation.
So generally you see the Alice and Bob explanation for it with the entangled particles a, b and the c which is being teleported.
Firstly in regards to entanglement let's say polarization of a photon, some places say both entangled particles are the same so if you measured vertical polarization on a then you know b has vertical polarization, but I have read other articles that say they are opposite so if you measure vertical polarization on a then you know b has horizontal polarization. Which one is correct? I'm guessing they are the same as I have read many more that say they are the same.
Alot of articles using it say in it that after the Bell measurement of ac both particles are destroyed and b then contains that information just that it is not useful information or randomized so it hasn't broken the FTL rule.
Even if it is randomized though isn't that still breaking the FTL rule since randomized information is still... well... information?
In other articles I see they say that information has not been instantly transferred only a quantum state has been instantly transferred (so no FTL breaking) but has it?
E.g. if I measured b before the Bell measurement of ac I would get result X. If after the Bell measurement on ac I measure b (but I don't modify it from the information they sent about ac) would I get the same X result that I would have gotten had I measured it before the ac measurement, meaning nothing (not even a quantum state) has been instantly transferred or would I get a different result (but still not nkowing if it is the correct one or not) meaning that something has?
Some articles lead me to believe that just measuring b would always yield the same result no matter if you have done anything to ac or not but then others imply that it would infact be different just that you have no way of knowing if it's the result that they were sending or not.
Now if you do get the same result no matter when you measure b (without modifying it) then could you measure b before the ac measurement and record it then say fly off on holiday, they perform the Bell measurement on ac and send you the result of that while your on holiday, and you use that reults and the result of your measurement of b to come up with the same result as if you were in the lab and used the ac information to modify b and get a result?
Hence my name, it's just so confusing when you read what should be the same story from different people but some are saying a different story but saying it's the same one.
So generally you see the Alice and Bob explanation for it with the entangled particles a, b and the c which is being teleported.
Firstly in regards to entanglement let's say polarization of a photon, some places say both entangled particles are the same so if you measured vertical polarization on a then you know b has vertical polarization, but I have read other articles that say they are opposite so if you measure vertical polarization on a then you know b has horizontal polarization. Which one is correct? I'm guessing they are the same as I have read many more that say they are the same.
Alot of articles using it say in it that after the Bell measurement of ac both particles are destroyed and b then contains that information just that it is not useful information or randomized so it hasn't broken the FTL rule.
Even if it is randomized though isn't that still breaking the FTL rule since randomized information is still... well... information?
In other articles I see they say that information has not been instantly transferred only a quantum state has been instantly transferred (so no FTL breaking) but has it?
E.g. if I measured b before the Bell measurement of ac I would get result X. If after the Bell measurement on ac I measure b (but I don't modify it from the information they sent about ac) would I get the same X result that I would have gotten had I measured it before the ac measurement, meaning nothing (not even a quantum state) has been instantly transferred or would I get a different result (but still not nkowing if it is the correct one or not) meaning that something has?
Some articles lead me to believe that just measuring b would always yield the same result no matter if you have done anything to ac or not but then others imply that it would infact be different just that you have no way of knowing if it's the result that they were sending or not.
Now if you do get the same result no matter when you measure b (without modifying it) then could you measure b before the ac measurement and record it then say fly off on holiday, they perform the Bell measurement on ac and send you the result of that while your on holiday, and you use that reults and the result of your measurement of b to come up with the same result as if you were in the lab and used the ac information to modify b and get a result?
Hence my name, it's just so confusing when you read what should be the same story from different people but some are saying a different story but saying it's the same one.
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