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Author Topic: NASA developing Warp Drive, "Alcubierre Drive"  (Read 27560 times)

MetalSlimeHunt

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #150 on: December 02, 2012, 12:58:00 pm »

Can't transfer classical information that way, sorry. Any attempt at modifying the system in a way that is measurable as a definite 'bit' on the other side will break the entanglement, since the particles have to be in thermodynamic equilibrium.
I believe the idea was that you would rapidly break and replace the entanglement to transfer the data, much in the same way it could be used for functional teleportation, but quicker.
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Virex

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #151 on: December 02, 2012, 02:31:30 pm »

How would that result in the transfer of data?
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MetalSlimeHunt

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #152 on: December 02, 2012, 02:35:43 pm »

The bit is modified when the entanglement breaks. Enough of this will result in parsable communication.
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kaijyuu

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #153 on: December 02, 2012, 02:58:12 pm »

You can't determine when the entanglement breaks, iirc.
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Virex

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #154 on: December 02, 2012, 03:07:46 pm »

The bit is modified when the entanglement breaks. Enough of this will result in parsable communication.
You can't distinguish between modification of the bit upon breaking the entanglement or modification of the bit upon measuring it, so I don't see how you're going to actually extract that information?
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Solifuge

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #155 on: December 02, 2012, 04:58:35 pm »

I don't know much about how one observes the state of quantum entanglement. Don't suppose there's a byproduct of entanglement, such as released energy or whatnot, that's measurable, and which wouldn't interfere with the source?

If so, you could probably use frequency of entanglement breaks to communicate data, yeah?
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Virex

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #156 on: December 02, 2012, 05:01:08 pm »

I don't know much about how one observes the state of quantum entanglement. Don't suppose there's a byproduct of entanglement that's measurable, which wouldn't interfere with the source?

If so, you could probably use frequency of entanglement breaks to communicate data, yeah?
You can't actually measure entanglement itself. The only way to determine if two particles are entangled is to measure the state of both particles and see if they're correlated. But to do that comparison you need to transfer classical data through another channel, which is limited by the speed of light (and it defeats the whole purpose of having communication through entanglement)
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Eagle_eye

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #157 on: December 02, 2012, 05:59:34 pm »

Is there any way to force a pair of particles to become entangled, so that you can be sure that the data on your end is an accurate reflection of what's on the other end, even if it is FTL?
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Virex

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #158 on: December 02, 2012, 06:26:15 pm »

Yes, that's how normal entanglement works. Entanglement works because of conservation laws. For example, if two spin-1/2 particles have been formed from a spin-0 particle, their spin states must add up to 0, since spin has to be conserved. This means that if one particle is measured to be <+1/2|, the other particle must be <-1/2| to keep the universe sane. The problem is that you cannot influence the probability function of only one of the particles and keep the entanglement, because if you do, conservation of spin no longer applies to the two-particle system. You also can't determine if particle 1 has been measured by measuring particle two, because the end result of measuring both particles in succession is independent of the order in which you measure them.
« Last Edit: December 02, 2012, 06:31:35 pm by Virex »
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olemars

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #159 on: December 02, 2012, 07:37:31 pm »

I learnt from Mass Effect 2 that a hundred entangled particles is enough for full 3D video transmission.
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Virex

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #160 on: December 02, 2012, 07:41:31 pm »

I learned from the Mass Effect series that there are at least 10 people out there that want to bone me. Somehow I don't think it's all that trustworthy :P
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Helgoland

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #161 on: December 02, 2012, 09:03:34 pm »

I learned from N that I can prolong my life by collecting little square gold pieces.
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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #162 on: December 03, 2012, 05:39:45 am »

I learnt from Pacman that I should wander around large buildings while repetitive modern music plays, eating consciousness-altering pills and attacking 'ghosts' so that their eyeballs fly away.

That stood me in good stead for those Raves, I tell you.
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DJ

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #163 on: December 03, 2012, 07:06:05 am »

OK, is it just me, or does anyone else keep reading the title as Albuquerque Drive?
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Starver

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Re: NASA developing Warp Drive, "Alcubierre Drive"
« Reply #164 on: December 03, 2012, 07:58:06 am »

OK, is it just me, or does anyone else keep reading the title as Albuquerque Drive?
I didn't, mainly because I probably would have spelt it "Albequerque" (or maybe even worse than that  "...kirkie"?), but now I doubtless will.

As well as humming the tune to go with "Warp Drive // Breaking Light // Al... Bu... Querque!".  Doubtless sung by Prefab Spacestation. ;)
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