Warp drive continues to be tested


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Glenn savill
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Message 1366569 - Posted: 11 May 2013, 0:21:54 UTC - in response to Message 1366510.

you can 'test' all possible solutions simultaneously.


That's implied by Feynman's interpretation in that all paths are traversed from A to B. I still don't see how that relates to logic or to a computer program that could make use of the stated fact.

Exactly how could all possible paths through a network be tested at once?


William you asked for Quantum computers to be explained so I and Tullio have done our best to do that so do yourself a faver please before commenting and watch Brian Greens program just because you don't understand it does not make it wrong .
You are like a lot of people that go to uni you become trained to not open your mind at things we do not yet fully understand the old black and white attitude
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Message 1366652 - Posted: 11 May 2013, 5:39:29 UTC

As I said earlier, it is difficult to explain quantum computing in a message board. I suggest to any interested person to go to www.qubit.org, you can find courses and tutorials there.
A qubit can have 2 possible states, |0> and |1> It is in a linear combination of these states a|0> + b|1> until you make a measurement on it and collapse it on either |0> or |1>. a square plus b square = 1. This is standard quantum mechanics.
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Message 1366738 - Posted: 11 May 2013, 12:57:24 UTC
Last modified: 11 May 2013, 12:57:36 UTC

My understanding of what the quantum computer is all about is that it could
mimic the operation of the human brain, itself a quantum computer. Hence the
difference then between the quantum computer and that of a conventional computer
will be that you programme the conventional computer to carry out tasks but
with the quantum computer you actually have to educate it to do the same...as
you do with the human brain....anyone come across this aspect regarding the
quantum computer/human brain relationship?
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Glenn savill
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Message 1366754 - Posted: 11 May 2013, 13:56:49 UTC - in response to Message 1366738.

My understanding of what the quantum computer is all about is that it could
mimic the operation of the human brain, itself a quantum computer. Hence the
difference then between the quantum computer and that of a conventional computer
will be that you programme the conventional computer to carry out tasks but
with the quantum computer you actually have to educate it to do the same...as
you do with the human brain....anyone come across this aspect regarding the
quantum computer/human brain relationship?



Yes Nick I read a article a long time ago about the brain being a Quantum computer but it was a while ago so I can't be shore of all the facts it said .It was a study of neurons on the atomic scale.
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Message 1366756 - Posted: 11 May 2013, 14:28:30 UTC

Yes Nick I read a article a long time ago about the brain being a Quantum computer but it was a while ago so I can't be shore of all the facts it said .It was a study of neurons on the atomic scale.

Possibly Glen there may be two lines of research/development with reference to
quantum computers. One down the conventional lines in line with conventional
computer technology but much-much more advanced. The other line following the
development of cell like structures, kind of neurocell in nature, that will be
used inside this quantum computer. Like you, I came across this article many
years ago...I think it may have appeared in the New Scientist magazine.
The article went on to say that once developed this computer would be able to
operate a robot that would be capable of virtually mimicking a human in operation.
It may all seed a bit scifi but actually no....all the bits are there, scientist's
just have to put them all together which as we know they are really good at
doing, eventually.

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Message 1366791 - Posted: 11 May 2013, 16:37:08 UTC - in response to Message 1366738.

My understanding of what the quantum computer is all about is that it could
mimic the operation of the human brain, itself a quantum computer. Hence the
difference then between the quantum computer and that of a conventional computer
will be that you programme the conventional computer to carry out tasks but
with the quantum computer you actually have to educate it to do the same...as
you do with the human brain....anyone come across this aspect regarding the
quantum computer/human brain relationship?

Read "The emperor's new mind" and "Shadows of the mind" by prof.Roger Penrose of Oxford University. The first is easier, the second requires some understanding of quantum mechanics.
Tullio
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Message 1366885 - Posted: 11 May 2013, 22:03:30 UTC - in response to Message 1366791.

The brain is not a quantum computer. It is an analog, highly parallel image processor.

It's not that I don't understand quantum computers, it's just that I have never heard an explanation of what one is and how it works. I venture that no one posting here has either. ALso, so how would you write a program for it.

Glenn savill
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Message 1366926 - Posted: 11 May 2013, 23:38:22 UTC - in response to Message 1366885.

The brain is not a quantum computer. It is an analog, highly parallel image processor.


Well William for a 20mhz parallel computer our brain's seem to be able to do what a gigaflop parallel computer can't so i'll ask you to now explain why that is so please
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Message 1366958 - Posted: 12 May 2013, 0:34:49 UTC - in response to Message 1366926.

The brain is not a quantum computer. It is an analog, highly parallel image processor.


Well William for a 20mhz parallel computer our brain's seem to be able to do what a gigaflop parallel computer can't so i'll ask you to now explain why that is so please

Hey Will'....your in the docks here. As far as I'm aware our brain is classed
as a quantum computer.


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Message 1366977 - Posted: 12 May 2013, 3:01:20 UTC - in response to Message 1366885.
Last modified: 12 May 2013, 3:17:28 UTC

The brain is better at some tasks and the computer is far better at others. Today I taught graduate stats and used statcrunch on a computer to do in seconds what might take a person with pencil and paper half a day or longer. This evening I cooked a splendid dinner which I don't expect to see a machine do in my lifetime. Perhaps we should resurrect the old argument "can machines think"? In time the distinction will blur further.

I did research on artificial neurons a long time ago. Even took graduate courses from Ross Ashby (Design for a Brain) and Heinz Von Forster of early Cybernetic fame. Mostly, I wound up debunking those who thought what they were doing was different from Boolean Logic and circuitry. We think we know roughly how a neuron works and that there are perhaps 10^12 of them in the brain. But each of these may have a thousand synaptic connections. We worked on Threshold Logic but though we could build simple logic circuits you could do the same with a few flip-flops and counters. No one was able to take these structures and build anything like a brain nor develop a logic to assist in the design. Look at the "Perceptron" to see how far they got. Also, the Avian retina was reproduced functionally in logic (edge detectors, bug detectors etc)

I don't know how the brain works, nor does anyone else. It is processing electro-chemical waves,images and storms via slow, chemical reactions that may resemble single sideband frequency modulation for transport. Where is the screen upon which we play consciousness ? How does memory work and where? Most brain research is at a macro level we map electrical activity in different areas of the brain and attempt to associate it with certain moods and experiences.

My daughter is a recent Neuro-science graduate and there are neurologists but they are concerned with manifestations of macro brain functions and not how the hardware, logic and interconnections work. So I don't know how a quantum computer works and I don't know how the brain works and If I did I would likely be the first.

I do know how a digital computer works and how to build one and how to program it to do amazing things. The brain remains better at many things now--it will not always be--perhaps a quantum computer will speed up this process but first we have to have one that offers an advantage over todays vastly sophisticated computer architectures and programs.

I apologize for this discussion as I note that this thread was about warp drives. I don't know how those work either so I will await a working model with baited breath.

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Message 1367075 - Posted: 12 May 2013, 11:22:44 UTC
Last modified: 12 May 2013, 11:23:33 UTC

The advantage these Quantum computers would have was the ability to think,
something the standard computer can not do. When I read the article on
the quantum computer, somewhere around 9 years ago, an example was given
regarding what the quantum computer could achieve. The example was set aginst
the simple process of completing a jigsaw puzzle. The article stated that
with the most powerful conventional computer this task would take that computer
around 360 million years to complete. The average intelligent human would take
about a day to achieve this task, the quantum computer around 4 minutes.
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Message 1367133 - Posted: 12 May 2013, 14:03:43 UTC - in response to Message 1367075.

I still believe there is not yet a real digital quantum computer, despite D-Wave selling two of them fore ten million dollars each. They might be analog computers, a kind which still exists, even if nobody mentions them.
Tullio
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Message 1367363 - Posted: 13 May 2013, 1:57:20 UTC - in response to Message 1367133.

I still believe there is not yet a real digital quantum computer, despite D-Wave selling two of them fore ten million dollars each. They might be analog computers, a kind which still exists, even if nobody mentions them.
Tullio


I agree with you Tullio 100%
Somebody is foolish enough to part with there cash as the saying goes there's a sucker born every day .....lololol
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Message 1367378 - Posted: 13 May 2013, 4:31:29 UTC
Last modified: 13 May 2013, 4:46:10 UTC

Well we seem to be veering off topic at greater than the speed of light but no one seems to care.

The concept of a "digital quantum computer" is an oxymoron.

Quantum computers are never digital.

D-Wave pursued the concept of "Adiabatic Qbits".

There is no inherent flaw in this approach, though it does result in a slow Quantum computer.

It does validate the concept of Quantum Computers, and achieves a working "Prototype"
from which future programming and design can evolve.

D-Wave achieved a working multi-Qbit computer and is the only company to do so.

Quantum computers are one technology that governments will do their best to contain.

just me two-fifths of a nickels worth.

lol
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Message 1367426 - Posted: 13 May 2013, 10:08:50 UTC - in response to Message 1367378.



Quantum computers are never digital.


What about Peter Shor's algorithm?
AFAIK the only customer of D-Wave is an armament industry which builds costly Stealth aircraft for the US Gov and others (including the Italian Gov unfortunately).
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Message 1367449 - Posted: 13 May 2013, 12:43:51 UTC
Last modified: 13 May 2013, 12:48:07 UTC

Certainly D-Wave has a working device, but no one is sure if it has much in the way of quantumness associated with it. Now, if these results require that the whole system is fully entangled (quantum entanglement) and fully coherent, then expanding the number of qubits to prevent level crossing may come at such a cost that solutions to NP-hard problems remain out of reach


or in other words it has yet to be proved it works
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Message 1367469 - Posted: 13 May 2013, 13:59:51 UTC - in response to Message 1367449.
Last modified: 13 May 2013, 14:33:28 UTC

Certainly D-Wave has a working device, but no one is sure if it has much in the way of quantumness associated with it. Now, if these results require that the whole system is fully entangled (quantum entanglement) and fully coherent, then expanding the number of qubits to prevent level crossing may come at such a cost that solutions to NP-hard problems remain out of reach


or in other words it has yet to be proved it works


Glenn please don't quote sources on the "Web" and make them sound like words from your mouth. The people here at Seti aren't stupid enough for that.
Do you even know what Quantum entanglement means? I Doubt it.
For one the spelling is accurate. Not your strong point.

LOL.
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Message 1367475 - Posted: 13 May 2013, 14:06:12 UTC - in response to Message 1367426.



Quantum computers are never digital.


What about Peter Shor's algorithm?
AFAIK the only customer of D-Wave is an armament industry which builds costly Stealth aircraft for the US Gov and others (including the Italian Gov unfortunately).
Tullio


I'm pretty sure i read that Google invested in a 28 Qbit quantum computer from d-Wave to explore facial recognition.
I'd be happy to be proven wrong.

LOL.

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Message 1367486 - Posted: 13 May 2013, 14:54:24 UTC

No I guess I don't know what quantum entanglement is .

I am not going to get into another word game with you .

Google are in partnership with D-wave and Lockheed martin

if I didn't know much about Quantum mechanics I would not have understood what the article was saying but you can tell us what Adiabatic Qbits is then

if you can't explain it then take your own advise
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