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Geek Culture / Quantum Computing

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AutoBot
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Posted: 11th Aug 2011 19:51
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http://news.yahoo.com/quantum-super-computing-sees-microwave-breakthrough-174007915.html

This looks pretty interesting in my opinion, of course it looks like it's in very early development... but if they could manipulate atoms like this in a compact way then there's definitely tons of value for it! Calculations in any sort of digital device could be a lot more flexible when manipulating atoms at this level, instead of the binary mechanisms we use today.

What are your thoughts?

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CoffeeGrunt
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Posted: 11th Aug 2011 20:26
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Just like "unlimited detail", nice in theory, impossible in practice.

Observing it to read the data changes the data, the very nature of quantum physics renders this impossible.

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Ocho Geek
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Posted: 11th Aug 2011 20:52
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Quote: "Just like "unlimited detail", nice in theory, impossible in practice."


no, quantum physics is definitely the future of computing, and if it's only 20% down on traditional computing (which has been around for 60 years) that's pretty impressive


Not Spanish, Not Eight, Just Ocho

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Grog Grueslayer
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Posted: 11th Aug 2011 21:14 Edited at: 11th Aug 2011 21:16
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We had a thread on this a while back but I couldn't find it. I still say if the quantum state changes when we look at it (sometimes it's 0 or 1 or both)... it cannot be reliable to store any data whatsoever. Until they figure out a way to stabilize the data or look at it without it changing it's useless to us despite the amazing abilities of quantum entanglement.

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Ocho Geek
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Posted: 11th Aug 2011 21:46
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ah, of course, I forgot about that nugget of ludicrous


Not Spanish, Not Eight, Just Ocho

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CoffeeGrunt
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Posted: 11th Aug 2011 21:49
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Schrodinger's cat I think it's called, observin quantum physics changes it.

So in theory we'd have this amazing and perfect system that would be flawless, the second you run it and try to read data from it, it collapses and goes haywire.

The link above seems like they concentrated on a tiny issue of using microwaves vs lasers, not the massive one that's stopping it from being feasible.

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Plystire
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Posted: 12th Aug 2011 00:25 Edited at: 12th Aug 2011 07:25
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If they did get this to work, there'd be new computer pranks to play on people!

"Hey! My drive got wiped! What happened?! A virus??"

"Nope, I looked in the case."





~Plystire

A rose is only a rose until it is held and cherished -- then it becomes a treasure.
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Neuro Fuzzy
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Posted: 12th Aug 2011 01:09
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Quote: " Schrodinger's cat I think it's called, observin quantum physics changes it.

So in theory we'd have this amazing and perfect system that would be flawless, the second you run it and try to read data from it, it collapses and goes haywire."


Ah, Okay Dr. CoffeeGrunt, thank you for opening the eyes of thousands of PhD. Physicists around the world to why quantum computers won't work. I'll alert anyone who hasn't heard immediately.


Why does blue text appear every time you are near?
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CoffeeGrunt
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Posted: 12th Aug 2011 01:17
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^Implying I was claiming absolute knowledge?

I mean, wow. That post was just all-round unnecessary. At least contribute to the topic rathering than getting antsy because your dreams of running Crysis 4 on these things won't come to fruition.

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Ocho Geek
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Posted: 12th Aug 2011 01:35 Edited at: 12th Aug 2011 01:36
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Quote: ""Hey! My drive got whiped! What happened?! A virus??"
"Nope, I looked in the case.""


That almost made my day, but you misspelt 'wiped'. Return to start, do not collect $200


Not Spanish, Not Eight, Just Ocho

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ionstream
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Posted: 12th Aug 2011 01:47
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Quote: "^Implying I was claiming absolute knowledge?

I mean, wow. That post was just all-round unnecessary. At least contribute to the topic rathering than getting antsy because your dreams of running Crysis 4 on these things won't come to fruition."


Eh he's kind of right on this one, this is something that is heavily researched by many brilliant scientists, you can't just pass it off as impossible in half a post. Especially considering that it's fundamental knowledge to know that a quantum state changes when observed, so I'm sure that the people behind this were well aware of this when they started.

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Diggsey
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Posted: 12th Aug 2011 02:17
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I think the point is that you *don't* directly observe it. Instead, you build up a complicated series of entangled states so that when you observe the final result, the only possible state it can collapse to is the result of the calculation.

[b]
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Wolf
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Posted: 12th Aug 2011 04:07 Edited at: 12th Aug 2011 04:07
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Quote: "
So in theory we'd have this amazing and perfect system that would be flawless, the second you run it and try to read data from it, it collapses and goes haywire."


OR we would have this perfect system that only pretends to run flawless, but as soon as we turn our back, it does something else.
I name it HAL.



-Wolf

I make serious coffee - so strong it wakes up the neighbors.
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Neuro Fuzzy
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Posted: 12th Aug 2011 04:52
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Quote: "Observing it to read the data changes the data, the very nature of quantum physics renders this impossible."

(= you claiming a fact)

Quote: "^Implying I was claiming absolute knowledge?"

You were making a statement that opposes the view of thousands of incredibly smart people.


Why does blue text appear every time you are near?
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Grog Grueslayer
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Posted: 12th Aug 2011 06:51
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@ Diggsey:

Now that's an interesting solution. But doesn't the entanglement go both ways? If you look at one and it changes it's current state doesn't the other entangled particle change likewise and vice versa?


@ Wolf:

Hahaha

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Plystire
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Posted: 12th Aug 2011 07:20 Edited at: 12th Aug 2011 07:20
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Quote: "but you misspelled 'wiped'."


Don't worry, I got your back since you got mine.


~Plystire

A rose is only a rose until it is held and cherished -- then it becomes a treasure.
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Ocho Geek
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Posted: 12th Aug 2011 12:13
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ahem...


Not Spanish, Not Eight, Just Ocho

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Fallout
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Posted: 12th Aug 2011 13:24
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Quote: "Don't worry, I got your back since you got mine. "


Misspelt is all good, as is misspelled. They're interchangeable. But don't worry, cos I got your back cos you got his back and hopefully he got my back too.

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Ocho Geek
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Posted: 12th Aug 2011 13:39
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no, it's misspelt. Don't rub salt in the wound


Not Spanish, Not Eight, Just Ocho

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CoffeeGrunt
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Posted: 12th Aug 2011 19:06
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Quote: "You were making a statement that opposes the view of thousands of incredibly smart people."


I'm pretty sure not the entire scientific community is working on this, sure, some of them will be working on workarounds, but not a solution to the problem itself.

When I say impossible, I mean "Glasses-Free 3D" impossible. I.e., it's capable of working small scale at the moment, but so far any attempt to upscale it to the necessary level will result in it becoming unfeasible, for the time being.

Also reread my post. I never said it was impossible anyway.

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Libervurto
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Posted: 12th Aug 2011 20:20
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So basically it's a cat in a box?

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AutoBot
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Posted: 12th Aug 2011 20:20 Edited at: 12th Aug 2011 20:36
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I think they're probably aware of the problems that are keeping this from working, thus the "many hurdles to overcome" statement. I could imagine this being feasible for computers some time in the future though, and they're still making some pretty profound steps toward this. In this case they've found out how to manipulate ions with gold electrodes, which I find to be a fairly big step. Although they still need to find an alternative for keeping the ions cool.

Quote: "So basically it's a cat in a box?"

If you're referring to the Schrödinger's cat experiment... I think the concept of applying quantum entanglement to a cat being "alive and dead" is a bit of an error on our part in observing how quantum physics really works. If a qubit is both 0 and 1 then it's the device's job to interpret that value correctly, not conjure some sort of paradox. But then again I'm not an expert on quantum physics, and there's still a lot of experimentation to be done in this field.

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Slow Programmer
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Posted: 12th Aug 2011 20:47 Edited at: 12th Aug 2011 20:49
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Quote: "Quote: "You were making a statement that opposes the view of thousands of incredibly smart people."

I'm pretty sure not the entire scientific community is working on this, sure, some of them will be working on workarounds, but not a solution to the problem itself.

When I say impossible, I mean "Glasses-Free 3D" impossible. I.e., it's capable of working small scale at the moment, but so far any attempt to upscale it to the necessary level will result in it becoming unfeasible, for the time being.

Also reread my post. I never said it was impossible anyway.

"


Second post in this thread:
Quote: " Just like "unlimited detail", nice in theory, impossible in practice. Observing it to read the data changes the data, the very nature of quantum physics renders this impossible. "


There are two kinds of computer users. Those that use Macs and those that wish they did.
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CoffeeGrunt
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Posted: 12th Aug 2011 21:12
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Oh yeh that post.

Eh, if you really care in ten years time, I'll make an appointment for you to say "I told you so."

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bruce3371
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Posted: 12th Aug 2011 21:33
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Have a read of this BBC news article from June this year;

http://www.bbc.co.uk/news/science-environment-13626587

Not directly connected with quantum computing, but relevant nonetheless, as it shows that Heisenberg's Uncertainty Principle doesn't always hold true in certain circumstances.

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Slow Programmer
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Posted: 13th Aug 2011 02:41
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Quote: "Oh yeh that post.

Eh, if you really care in ten years time, I'll make an appointment for you to say "I told you so."

"


I will buy the beer

There are two kinds of computer users. Those that use Macs and those that wish they did.
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