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InvisibleStonehenge
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Talk about quantum computing
    #22150277 - 08/27/15 08:20 AM (8 years, 5 months ago)

Lets talk about the new field of quantum computing. What are the latest advances, what are the implications to society if this is brought about?  Will we lose our privacy, will we be spied on 24/7? or will it usher in a new golden age?

i'll share the little bit I know about the hardware part. A qubit is supposed to be a pair of particles either sub atomic or near atomic in size, or could be a photon even. What they have found is that particles can be in more than one place at a time. When we go to look at them, they are in one place but until checked, they could be in either or both. This is seen in particles put through a beam splitter or diffraction grating. A photon can be split and may take one of two routes.

So they seem to be using these qualities to make logic gates. However, the gates for the most part don't seem to be regular computer logic gates like and, or, nor, etc. They say an array of qubits can be used to solve very complex problems or brute force problems in a short time. The software itself seems to be very complicated.

One problem I know they have is how to make sure they are in the right state before operation and how to detect the result. Also, qubits seem unstable and don't last very long. D wave claims to have a working quantum computer but what it can do is questionable

If govt gets the power to decrypt any message no matter how good the code, using present coding systems like pgp, will we have any privacy? Or will we use the same computers to create unbreakable code? Will science advance rapidly being able to simulate new molecules, new machines and so on?


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InvisibleDividedQuantumM
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Re: Talk about quantum computing [Re: Stonehenge]
    #22150362 - 08/27/15 08:46 AM (8 years, 5 months ago)



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InvisibleStonehenge
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Re: Talk about quantum computing [Re: DividedQuantum]
    #22150440 - 08/27/15 09:05 AM (8 years, 5 months ago)

Yeah, that has all the standard stuff in it. I hear the same language over and over but they don't explain a lot of the details. Possibly because its secret or perhaps because they are still working on it. Do the working computers use liquid helium to cool the parts? Do any of them work at room temps? How do the gates work? Whats this about calculating all possible solutions at once? They repeat those things over and over but never say how. I suspect there is a lot of hype at work here.

Why is a 512 qubit computer only costing $15 mill? If it works why haven't they demonstrated it? Will the uncertainty principal pop up and make it impossible to do the advanced stuff? As many years as this has been worked on you would think they could give more specific information.


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“A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.” (attributed to Alexis de Tocqueville political philosopher Circa 1835)

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InvisibleDividedQuantumM
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Re: Talk about quantum computing [Re: Stonehenge]
    #22150540 - 08/27/15 09:26 AM (8 years, 5 months ago)

That's a good point, I have actually wondered the same thing.  They're curiously silent about the details for some reason.


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Offlineberdinwall
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Re: Talk about quantum computing [Re: DividedQuantum]
    #22158315 - 08/28/15 08:30 PM (8 years, 5 months ago)

this is kinda cool. Yalls convo had me search "wiki leaks quantum computer" and returned this...

there are more links at the bottom with other documents

http://www.wikileaks-forum.com/nsa/332/snowden-leak-nsa-quantum-computer-part-i/26543/

So in part II it states that one of the purposes (in 2011) was for the NSA was to explore whether it is even practical or to their benefit to further research/develop QC possibilities. This is a top secret document by the NSA which I assume is at the head of the game in research about quantum computing, so I doubt theres too much going on in terms of having one already built and working as they'd like being it only 4 years later

Oh part of the document literally says

"Much of the research in quantum computing is still very basic and is most effectively pursued in NSA-funded open research programs"


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Edited by berdinwall (08/28/15 08:38 PM)


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InvisibleStonehenge
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Re: Talk about quantum computing [Re: berdinwall] * 1
    #22159952 - 08/29/15 09:57 AM (8 years, 5 months ago)

We have to wonder if there is actually anything to it at all. They make all these big promises of how it can work a zillion times faster than a conventional computer. The part about it being able to try all possible solutions at once caught my eye as likely bs. Meanwhile, the biggest problem I heard of it solving to date is to factor the number 15. A kid can do that with paper and pencil.

If it works why don't they demonstrate it? That would not reveal any secrets, except the fact they have a working model which would be a huge feather in the cap of whatever govt or company did it. So they have a lot of motivation to demonstrate but have not done so leading one to think there is no fruit on that tree.

It sounds interesting in theory but we are talking about atomic scale and very delicate conditions. It likely has to be done near absolute zero temps since heat produces noise that would screw up the process. It might be just as well if it doesn't work, that would put too much power in the hands of known psychopaths.


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“A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.” (attributed to Alexis de Tocqueville political philosopher Circa 1835)

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OfflineBrendanFlock
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Re: Talk about quantum computing [Re: Stonehenge]
    #22243412 - 09/15/15 09:13 PM (8 years, 4 months ago)

A quibit is a quantum code for a specific set of particles..in a standard of non standardize notation..which in that if shapely and formidable in shape..and set...that to line up the quibits..not only in during their quantum indeterminancy..but in things..that only become what they are meant to become..to study that natural destiny of particles..and then from there figure out if there is a way to route them into particular veins..of technology..like micro chips..photon ray scanning..and then informational collection on a quantum load..a full Roll..so to speak..could contain a massive amout of digital information in the notation of a moving image..that can and will relate in partiality to the quantum bits themselves...so the collection is one of data, and information load..and then the execution of that information that can fullfil arrays in quantum bits..and then with the necessary logic of the destiny and density..is that it is equal to a quantum bit..and then through fulfilment of order logics.. would be where logic gates are definately incorporated...the thing is that all things are equal(in aspect of relational basics) to each other in some way..a true riding of intelligent information on a zero span...or a super coordinate system..in which..much like a cartesian plane..we relate quantum bits in a natural mapping scale..like drawing a line say of a negative electron..in say -5,-1 space mapped on a cartesian plane..and then figuring out if a wave can be connected and then collapsed only with the correct digital map of information..and say its connected to proton at +5,+5 notation..so the whole thing is like a super system..but the key is not to force these particles into situations they dont want to be in..but to go along the lines of their natural interactions and force..

So to speak following the natural laws of nature and physics..we could produce marvelous machines..


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InvisibleStonehenge
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Re: Talk about quantum computing [Re: BrendanFlock]
    #22244909 - 09/16/15 08:59 AM (8 years, 4 months ago)

Yeah, I read all that myself before posting. It all sounds feasible on paper, but in reality nothing is happening. I hope they cashed that $15m check for the so called quantum computer they sold before the buyer finds out they were scammed. Maybe some day it will work as predicted but that day is not today.

I suspect the uncertainty principal will pop up in some form. That and the fact its like herding hundreds of cats and expecting them to behave will probably doom it but lets hope for the best.

We may get it right after they start making small efficient fusion generators.


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“A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.” (attributed to Alexis de Tocqueville political philosopher Circa 1835)

Trade list http://www.shroomery.org/forums/showflat.php/Number/18047755


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