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seen Jul 13 '12 at 17:48

Jul
13
accepted Is it possible to send a single photon from a distant planet (say Mars) and detect its arrival at a site on Earth?
Jul
13
comment Is it possible to send a single photon from a distant planet (say Mars) and detect its arrival at a site on Earth?
Also, how in the world did they produce 10E6 entangled photons per second?
Jul
13
comment Is it possible to send a single photon from a distant planet (say Mars) and detect its arrival at a site on Earth?
Thanks straups. I still don't understand how a photon can really traverse 300km without being absorbed by one of the trillions of atoms it would possibly encounter along the way. If entanglement is perserved, it should mean that the photon did not interact with any atoms before reaching the detector. Is my reasoning correct? Isn't entanglement broken anytime there is a way to measure for certain the position of one photon of a pair? Even if we don't try to know the position?
Jul
7
asked Will an entangled idler electron induce a current in a conductor if the signal elctron's spin is measured?
Jul
5
awarded  Tumbleweed
Jul
3
comment Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
Hey thanks for the post, Ron. I understand what you mean about the correlations vanishing asymptotically with increasing distance, but I don't understand what you mean by "and then only as a power". Could you please clarify. Thanks
Jul
3
awarded  Commentator
Jul
3
comment Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
I can see the academic value of doing this, but I am also interested in a practical solution
Jul
3
comment Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
Thanks for your response, Peacefull World. This is exactly what I am looking for. I have read all of Hotta's publications. I am only now starting to try and learn quauntum physics because of my interest in Hotta's ideas. I appreciate your insight and I can see now the flaws of my scheme. I am determined to find a way, however, that this protocol for teleporting zero-point energy can be practical for arbitrarily large distances. It is obviously impractical to create a large near vacuum at mK temperatures between two locations just to teleport energy.
Jul
2
asked Is it possible to send a single photon from a distant planet (say Mars) and detect its arrival at a site on Earth?
Jul
2
comment Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
So instead of two subregions within one vacuum state system, there are two separate vacuum state systems. A measurement made in one and the squeezing observed in the other. Thanks
Jul
2
comment Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
Thanks Peter. I should probably be a little more specific though. I recently read a paper that shows that, in principle, two subregions within a single vacuum state system at roughly milliKelvin temps there is a correlation such that a measurement of the electric field in one subregion causes a local squeezing of the fluctuations in another subregion. What I am asking is wheter or not this same result would occur if the measurement was made in one vaccum state system and a separate vacuum state system was observed for the squeezing of the fluctuation. I appreciate your time.
Jul
2
awarded  Supporter
Jul
2
comment Is it possible to create an entangled pair of photons if they originate initially from operations at two separate sites?
Thanks Terry. That really clears up my thinking!
Jun
29
asked Is there any correlation between the energy density fluctuations of two separate systems in a vacuum state?
Jun
29
awarded  Scholar
Jun
29
accepted Is it possible to create an entangled pair of photons if they originate initially from operations at two separate sites?
Jun
28
asked Can two distinct spatially separated many-body systems in the ground state contain entangled particles?
Jun
28
comment Is it possible to create an entangled pair of photons if they originate initially from operations at two separate sites?
As I understand, the entangled state is destroyed if either photon of the entangled pair is measured. Since entanglement has some utility in cryptography and communication, this is necessarily a resource that must be replenished. So, after one round of entanglement swapping and subsequent destruction of the entanglement (for its utility), do Alice, Bob, and Carol have to then meet up and reset to the previous state of affairs? What I am looking for is a way to preserve a sort of "master" entanglement that is not destroyed that will serve to generate new entanglement (for utility) remotely
Jun
27
comment Is it possible to create an entangled pair of photons if they originate initially from operations at two separate sites?
Thanks alot to both Terry and Juan. You have both been very helpful. I understand now how this possible and to be honest I had a tentative notion that it would be something like what Juan has described here as entanglement swapping. Thanks again