Live data from Hacker News

Researchers have successfully teleported wave packets of light

abc.net.au

31–40 of 56 posts

Re: Researchers have successfully teleported wave packets of light

#31
post #24

Why are people assuming that 'teleportation' means instantaneous travel? To me, teleporting has always meant transferring the information that describes an object to another location, where the object is reproduced. This transfer of information occurs via light/radio waves or similar.

It may not be the word "teleportation" that triggers it. A lot of popular science fiction, e.g. the Commonwealth Saga, uses quantum entanglement as a plot device for instantaneous communication.

Re: Researchers have successfully teleported wave packets of light

#32
post #24

Why are people assuming that 'teleportation' means instantaneous travel? To me, teleporting has always meant transferring the information that describes an object to another location, where the object is reproduced. This transfer of information occurs via light/radio waves or similar.

I'm assuming this due to modern fantasy borrowing the term from sci-fi (ie, "teleport" as a way to magically whisk someone/thing from one location to another instantaneously)... which popular culture has adopted wholesale.

Re: Researchers have successfully teleported wave packets of light

#33

One thing that isn't clear in this article is whether they really teleportated it, meaning that they were able to transfer information instantaneously from point A to point B (which would go against Einstein's relativity law that states that nothing can go faster than the speed of light), or if they just transported a light beam from one point to another with regular means of communication. It sounds more like it's t…

and the word "teleportation" here is probably more a link bait than anything else.

One thing I like about HN is that if I see a link that sounds too, umm, bait-y, I can just look at the comments here and avoid wasting my time (or at least getting excited without cause).

Re: Researchers have successfully teleported wave packets of light

#34
post #26

Earlier quoted context omitted.

I hate to post what is nearly a "me too", but I'd also like to ask that question, with the clarification that I do not mean it as a rhetorical equivalent of "No, of course it's not instantaneous, duh", I am genuinely curious where the sheer confidence of the definition of "teleportation" as "instantaneous in violation of relativity" suddenly came from. Is there some scifi show on TV that I'm not watching that is prom…

Not sure how anyone could of missed the whole teleport = instantaneous thing... Thankfully Wikipedia is here to save the day! http://en.wikipedia.org/wiki/List_of_fiction_containing_tele...

You just got played. It was done very well but nevertheless.

Re: Researchers have successfully teleported wave packets of light

#36

One thing that isn't clear in this article is whether they really teleportated it, meaning that they were able to transfer information instantaneously from point A to point B (which would go against Einstein's relativity law that states that nothing can go faster than the speed of light), or if they just transported a light beam from one point to another with regular means of communication. It sounds more like it's t…

Quantum teleportation just means reproducing the entire quantum state of the system without physically transporting it. It's interesting to note that you can't do this without destroying the original (http://en.wikipedia.org/wiki/No-cloning_theorem).

Re: Researchers have successfully teleported wave packets of light

#37
post #24

Why are people assuming that 'teleportation' means instantaneous travel? To me, teleporting has always meant transferring the information that describes an object to another location, where the object is reproduced. This transfer of information occurs via light/radio waves or similar.

I have a vague impression from articles read in the past that quantum entanglement could allow for a signal to be transferred over an arbitrarily large distance, instantaneously, because somehow a change at point A was 'magically' reflected at point B. I admit that this doesn't necessarily have anything to do with teleportation (I honestly don't understand their usage of the word).

By the way, a quick Google search shows that I am not alone in my thinking, and that I am wrong. :-)

Re: Researchers have successfully teleported wave packets of light

#38
post #22

One thing that isn't clear in this article is whether they really teleportated it, meaning that they were able to transfer information instantaneously from point A to point B (which would go against Einstein's relativity law that states that nothing can go faster than the speed of light), or if they just transported a light beam from one point to another with regular means of communication. It sounds more like it's t…

The speed limit of the universe isn't just some hypothesis waiting to be disproven. It can't be broken. It's impossible.

Never underestimate the capacity of humans to be wrong. Science is made from people being willing to admit they're wrong: the evidence for speed limits is compelling, but not absolute.

It would just mean our current model is screwed if we're wrong...

Re: Researchers have successfully teleported wave packets of light

#40
Anyone found the DOI link yet? The explanation in the article is, I agree, awful, and I want to read what they actually did! If it was only moving a bit of information from RAM to a register (or the quantum equivalent) which it sounds like...then yea, no biggie.
Post reply on HN