Quantum 'spooky action at a distance' becoming practical?
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Re: Quantum 'spooky action at a distance' becoming practical?
#2http://advances.sciencemag.org/content/4/1/e1701230.full
Original paper, in case you don’t want to slog through Phys.org’s brand of press release nonsense.
Re: Quantum 'spooky action at a distance' becoming practical?
#3"This was possible to achieve thanks to state of art photon source and detection technology"
What's a photon source thats not a lamp/laser?
Re: Quantum 'spooky action at a distance' becoming practical?
#4[deleted]
Re: Quantum 'spooky action at a distance' becoming practical?
#5"This was possible to achieve thanks to state of art photon source and detection technology" What's a photon source thats not a lamp/laser?
I have not read the full article, but usually you need a laser which can produce single photons and which can control their polarisation (Other sources produce quantum superpositions of having 1 photon, 2 photons, 4 photons, etc. It's a probability distribution containing all those numbers).
Re: Quantum 'spooky action at a distance' becoming practical?
#6"This was possible to achieve thanks to state of art photon source and detection technology" What's a photon source thats not a lamp/laser?
You usually need single photon sources or SPDC.
Re: Quantum 'spooky action at a distance' becoming practical?
#7Quantum entanglement is such a neat phenomenon, but secure communication feels like such a boring application. How much extra security would a quantumly protected communication channel provide over just using some really heavy encryption sent in a normal manner?
Re: Quantum 'spooky action at a distance' becoming practical?
#8Sadly even if we achieve quantum communication it will be only be for military and governments as we have already seen how government and law enfrocement all over the world has been against secure communication between people.
Re: Quantum 'spooky action at a distance' becoming practical?
#9Re: Quantum 'spooky action at a distance' becoming practical?
#10Quantum entanglement is such a neat phenomenon, but secure communication feels like such a boring application. How much extra security would a quantumly protected communication channel provide over just using some really heavy encryption sent in a normal manner?
That observation of the communication would break the link, versus capture and (attempt to) decrypt?