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Message 1367488 - Posted: 13 May 2013, 14:58:28 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


You know tullio when the Military Industrial Complex
invests in any company enough to take them out of
the Global economy, they have a technology that
governments don't want to share.
I'm sure you can dot the i's and cross the t's on that.

lol

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Message 1367493 - Posted: 13 May 2013, 15:23:55 UTC - in response to Message 1367449.

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

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


No Glenn i defer to you.

Please explain what you meant in your earlier statement.

what did you mean by
the whole system is fully entangled (quantum entanglement) and fully coherent.

and what means,

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

You appear to be the Expert.
Enlighten us.

Oh and i shouldn't have to explain Adiabatic.
Any halfwit would know that any high speed Quantum Computer would have to be
Adiabatic, Anisotropic, Isotropic, and a whole bunch of other Tropies,
all at the same time.
But you already knew that right?

lol...
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Message 1367509 - Posted: 13 May 2013, 15:57:50 UTC

As you said I copied the article from a web site but to explain it I would have to put the whole article up and the mathematical problem he was talking about
and you have already advised me that I should not do that right !

What I will tell tho is I was looking for a layman's explanation of your post about "Adiabatic Qbits". level crossing is one of the problems with it

so I say again take your own advise

I'm shore Tullio would be understanding it after all he is a retied astronomer and why you wish to discredit him or make fun of him is beyond me

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Message 1367517 - Posted: 13 May 2013, 16:07:35 UTC - in response to Message 1367509.

As you said I copied the article from a web site but to explain it I would have to put the whole article up and the mathematical problem he was talking about
and you have already advised me that I should not do that right !

What I will tell tho is I was looking for a layman's explanation of your post about "Adiabatic Qbits". level crossing is one of the problems with it

so I say again take your own advise

I'm shore Tullio would be understanding it after all he is a retied astronomer and why you wish to discredit him or make fun of him is beyond me


NO Tullio is not a retied astronomer.

Heard of spell check?

Tullio is a physicist who still engages with morons like you and me.
Big difference.


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Message 1367526 - Posted: 13 May 2013, 16:17:29 UTC - in response to Message 1365618.

I think that teleportation of photons is already being done. But they are massless particles.
Tullio

An interesting particle is the photon, especially when split for each half
manages to stay in communication with the other.



Yep Tullo is correct it is Qantum Entangled yes there spooky action but Einstein didn't believe it he said God doesn't throw dice

However resent experiment with Teleportion in Hawai proves it does happen and teleportation would invole 3 protons
Again you need to watch Professer Brain Green doco Fabric of the cosmos episode 3 Qantum Leap



This one of my earlier posts so please tell me again that I don't understand what Quantum Entanglement is even if I could not explain it scientifically
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Message 1367528 - Posted: 13 May 2013, 16:20:12 UTC

umm you shore because i'm shore he said to me he was he may also be a physicist he didn't tell me that
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Message 1367536 - Posted: 13 May 2013, 16:23:58 UTC

good night everyone very late here i'll leave the ummmmm to debate things with you guys
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Message 1367561 - Posted: 13 May 2013, 16:49:40 UTC - in response to Message 1367526.
Last modified: 13 May 2013, 16:53:58 UTC

This one of my earlier posts so please tell me again that I don't understand what Quantum Entanglement is even if I could not explain it scientifically


Yes Einstein did say that God does not play dice with the Universe,
to which someone replied,
Stop asking God.

I have no idea what you're babbling about half of the time, if not more.

So in the vein of babbling i posit this,
at the moment of the Big Bang,
all of space, time, energy, and maybe no matter, was condensed within a Planck Unit of Space-Time and here we be.
Surely all of space-time is entangled on a quantum level given its origin.
And what ...i have no idea.

Please enlighten me.
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Message 1367562 - Posted: 13 May 2013, 16:49:55 UTC

I have cooperated with an engineer who is doing research on quantum computers and we published an article in 1996 on the Italian version of MIT Technology Review. Then I used my computer to run a BOINC project, AQUA@home, where AQUA stood for Adiabatic QUantum Algorithm. The project was started by D-Wave and I learned something about this firm from its message boards. Then they sold a quantum computer (D-Wave One) to Lockheed Martin and the project was abruptly terminated. I am still following the field especially on "Nature" magazine but I have also downloaded lectures by David Deutsch of Oxford University on the theoretical foundations of quantum computing. I have learned a new aspect of quantum mechanics from these lectures.
Yes, I had read about Google reaching some agreement with D-Wave, but the only computers they (D-Wave) have claimed to have sold are those sold to Lockheed Martin.
Tullio
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Message 1367610 - Posted: 13 May 2013, 19:12:49 UTC - in response to Message 1367562.
Last modified: 13 May 2013, 19:16:47 UTC

I have cooperated with an engineer who is doing research on quantum computers and we published an article in 1996 on the Italian version of MIT Technology Review. Then I used my computer to run a BOINC project, AQUA@home, where AQUA stood for Adiabatic QUantum Algorithm. The project was started by D-Wave and I learned something about this firm from its message boards. Then they sold a quantum computer (D-Wave One) to Lockheed Martin and the project was abruptly terminated. I am still following the field especially on "Nature" magazine but I have also downloaded lectures by David Deutsch of Oxford University on the theoretical foundations of quantum computing. I have learned a new aspect of quantum mechanics from these lectures.
Yes, I had read about Google reaching some agreement with D-Wave, but the only computers they (D-Wave) have claimed to have sold are those sold to Lockheed Martin.
Tullio


I too dedicated processing power to Aqua@home.
I believe i even tried communication with you through their message board, though i doubt you would remember.
My take on the Aqua@home fiasco is that they managed to monetize the low hanging fruit in Quantum Computing and got bought up by Bigger Fish.
Even a low efficiency Quantum Computer, with limited applicability, was orders of magnitude more productive than anything that could be achieved through digital means.
Call me a conspiracy lunatic.
i've been called much worse.
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Message 1367641 - Posted: 13 May 2013, 20:45:57 UTC - in response to Message 1367610.
Last modified: 13 May 2013, 20:49:37 UTC

Here's my take on Quantum Computers and what appears to be mistaken implications and hype. We all know that the speed of a computer is limited by the energy that it takes to switch states and the distance between logic gates which has been shrinking steadily somewhat in accord with Moire's law. It is thought that to go much faster we will have to eventually get down to the atomic level--hence the use of the term quantum computer. There are of course other considerations for computing speed with today's technology such as pipelining, parallel processing and use of implicit parallelism in computer programs.

Another boast is that a quantum computer can be in many states at once--really ? how do we know which state is the correct one ? For my money an electron is in a plus spin state or a minus. If you like the Schrodinger cat idea of neither state then maybe you have three states --but don't look.

It is stated that a digital computer can only be in one state at a time. While that is true 64 or 128 bits can be processed at once and this is only limited by word structure and packing in so many floating point representations.

So I say. Lets see the hardware, logic, and programs that can make use of the so called quantum computer.

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Message 1367653 - Posted: 13 May 2013, 22:50:21 UTC - in response to Message 1367641.

Here's my take on Quantum Computers and what appears to be mistaken implications and hype. We all know that the speed of a computer is limited by the energy that it takes to switch states and the distance between logic gates which has been shrinking steadily somewhat in accord with Moire's law. It is thought that to go much faster we will have to eventually get down to the atomic level--hence the use of the term quantum computer. There are of course other considerations for computing speed with today's technology such as pipelining, parallel processing and use of implicit parallelism in computer programs.

Another boast is that a quantum computer can be in many states at once--really ? how do we know which state is the correct one ? For my money an electron is in a plus spin state or a minus. If you like the Schrodinger cat idea of neither state then maybe you have three states --but don't look.

It is stated that a digital computer can only be in one state at a time. While that is true 64 or 128 bits can be processed at once and this is only limited by word structure and packing in so many floating point representations.

So I say. Lets see the hardware, logic, and programs that can make use of the so called quantum computer.



As i understand it a Quantum computer could never give you greater than a
100 % guesstimation of anything, probably a bit short of that guesstimate.
How that is more complete that an estimate based on incomplete information i don't know.
Where Quantum computers distinguish themselves is that given the variable
starting conditions they invariably exhibit the probabilistic outcome of their
calculation rather quickly.
A Quantum computer could never give a definitive answer, but you'd get it really fast.
Maybe 99.99999999999999999999999999999999999999999999999 % is good enough.
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Message 1367661 - Posted: 13 May 2013, 23:30:47 UTC - in response to Message 1367561.

This one of my earlier posts so please tell me again that I don't understand what Quantum Entanglement is even if I could not explain it scientifically


Yes Einstein did say that God does not play dice with the Universe,
to which someone replied,
Stop asking God.

I have no idea what you're babbling about half of the time, if not more.

So in the vein of babbling i posit this,
at the moment of the Big Bang,
all of space, time, energy, and maybe no matter, was condensed within a Planck Unit of Space-Time and here we be.
Surely all of space-time is entangled on a quantum level given its origin.
And what ...i have no idea.

Please enlighten me.


Morning GF I see you waited till I went to bed before posting your message .you statement as usual is rubbish you don't understand the beginnings of the Universe .
Was there matter in the first unit of Planck time ?
Do you even know what a Planck unit of time is ?
How can protons be Entangled if there wasn't any matter to Entangle ?
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Message 1367716 - Posted: 14 May 2013, 4:34:26 UTC - in response to Message 1367561.

This one of my earlier posts so please tell me again that I don't understand what Quantum Entanglement is even if I could not explain it scientifically


Yes Einstein did say that God does not play dice with the Universe,
to which someone replied,
Stop asking God.

I have no idea what you're babbling about half of the time, if not more.

So in the vein of babbling i posit this,
at the moment of the Big Bang,
all of space, time, energy, and maybe no matter, was condensed within a Planck Unit of Space-Time and here we be.
Surely all of space-time is entangled on a quantum level given its origin.
And what ...i have no idea.

Please enlighten me.


WTH is your problem?
Glenn clearly has trouble expressing himself to us, but it seems pretty clear he has tried to learn some things, pass on what he's learned, and then learn some more, including from us.
Aren't you the guy who's profile said a month ago that you're from Zambia and how you were going to stop posting and crunching, followed by a brief lament about those who have disappeared?
Well, keep it up. Maybe you can help a few more disappear.

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Message 1367770 - Posted: 14 May 2013, 8:21:10 UTC

at the moment of the Big Bang, all of space, time, energy, and maybe no matter, was condensed within a Planck Unit of Space-Time and here we be.

I disagree with that view and I have my own theory about the Universe, although I've never known anyone yet to agree with me :-)

The universe is infinite, it goes on forever in all directions, has always been there, and always will be. That is a difficult concept for humans to grasp because we live in a finite world where there is a beginning and an end. People get born and die, if I pick up a book, I can see the length, width, thickness, all four sides, and the front and back. i.e. I can see it in its entirety. The concept of in-finite things is alien to us.

I think black holes are areas in space where a star has collapsed onto itself and where gravity is so strong that not even light can escape, hence the name black hole. Over time it absorbs so much matter that at some point it cannot take any more and just blows up. It's like someone sitting down to dinner and eating so much food that the stomach rebels, and they are violently sick. There are black holes exploding in "big bangs" all the time everywhere in the universe, and what we are observing now is the aftermath of our own local big bang. In time the remnants of our explosion will be swallowed up by other black holes somewhere else,and then another local big bang will happen.

Time isn't an entity in itself or even a dimension, for something that has always existed, it doesn't stop or stand still. What it is, is a method of measuring the durations of events and the intervals between them. That is how we can say that the age of the earth is roughly 4.5 billion years, or circuits around the sun, and that the age of our bit of the observable universe is roughly 13.8 billion years from our local big bang. Time dilation is not a slowing up or slowing down of time, it is a difference in duration of observed events from differing viewpoints due to gravitation and velocity.

Planck Units and Quantum Mechanics are too scientific for me to fully understand, but if they help the physicists to understand things better, then fine. Finally I still think that FTL travel must be possible, but not within the constraints of the scientific knowledge that we currently have. Maybe in a few hundred years we might have cracked it, and the LHC at full power will be aa small step towards that. I can't prove a single word of the above, and never will be able to, but it makes some sort of sense to me :-)




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Message 1367779 - Posted: 14 May 2013, 9:03:56 UTC

I tend to agree with you on a FTL system when they get the LHC going again and find out how and the Higgs field does what it's suppose to do there mite be a way to get around it.

I recently heard of a experiment that some boffins where doing measuring how fast neutrino's where traveling from I think it was a galaxy and they found one of two neutrino's had travelled faster than light and has thrown a spanner in the works for physicists and no I don't know how they measured this but does make you think that FTL mite be possible in a another couple of decades .

Tullio have you heard anything about that and weather they stuffed up there calculations ?
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Message 1367807 - Posted: 14 May 2013, 10:42:53 UTC - in response to Message 1367779.

I tend to agree with you on a FTL system when they get the LHC going again and find out how and the Higgs field does what it's suppose to do there mite be a way to get around it.

I recently heard of a experiment that some boffins where doing measuring how fast neutrino's where traveling from I think it was a galaxy and they found one of two neutrino's had travelled faster than light and has thrown a spanner in the works for physicists and no I don't know how they measured this but does make you think that FTL mite be possible in a another couple of decades .

Tullio have you heard anything about that and weather they stuffed up there calculations ?

Yes, the faster than light neutrinos measured at Gran Sasso National Laboratories were simply the result of a measurement error due to a faulty cable. The neutrinos from the 1987A supernova arrived before the photons simply because neutrinos escape more easily from a supernova core than photons.
Tullio
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Message 1367814 - Posted: 14 May 2013, 11:19:00 UTC

Glen you may have meant this?

Neutrinos

For any particle to travel FTL means a zero or negative mass. The neutrino has half-integer spin (½ħ) and is therefore a fermion. Neutrinos interact primarily through the weak force. The discovery of neutrino flavor oscillations implies that neutrinos have mass. An experiment done by C. S. Wu at Columbia University showed that neutrinos always have left-handed chirality.

Quite what all that means I'm not at all sure, but it seems to suggest that neutrinos cannot travel faster than light, thus substantiating Einsteins theories.

Even assuming that some sort of FTL speed warp drive was invented, how do you protect the occupants of a craft from the G forces that would be involved in accelerating from rest? We've all seen the Star Trek opening sequences, going into warp drive, why weren't they all squashed to jelly?

Warp drive




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Message 1367823 - Posted: 14 May 2013, 11:56:13 UTC

Thanks Chris and Tullio that was what I was talking about.

Now all we gotta figure out is like Chris said how to stop being squished when the captain says Engage...
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Message 1367856 - Posted: 14 May 2013, 13:42:23 UTC

If memory serves, when Alcubierre worked out his theory for a real space warp, some years ago, it showed that those riding inside the warp would not be affected by inertia or time dilation effects.

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