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| Tags: accounts, computer, free, program, quantum |
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On 1 May 2007 23:05:11 -0700, "
wrote: D-Wave Inc. (I read in the various news articles on the net) has demonstrated a quantum computer (and for sceptics, there are several technical articles in little-known journals, so says the web) and is planning to give free accounts to program a quantum computer. D-Wave's web-site is http://www.dwavesys.com This should be great for PhD hunters. Erach Contact D-Wave Systems Inc. 100 - 4401 Still Creek Drive Burnaby, British Columbia Canada V5C 6G9 Telephone: (604) 630-1428 Fax: (604) 630-1434 Everyone working on quantum computers is either a fraud or a fool or both. That includes the folk at D-Wave. Quantum physicists do not understand why the universe is probabilistic. David Deutsch has his infinite parallel universes crap he's been preaching for aeons while most others admit that they have no clue. Deutsch is a full blown crackpot of the worse kind in my book. His crap is no better than the time travel, paranormal crap of that other crackpot, Jack Safarti. Come to think of it, Deutsch believes in the possibility of time travel as well. How any of these lunatics get to be taken seriously by the mainstream physics community is a mystery. The truth is that the universe is probabilistic because it is discrete and there is only one fundamental discrete interval (i.e., a universal event counter). Since nature cannot calculate precise intervals for interactions, it is forced to use the only alternative: probability. In other words, all interactions have the same fundamental duration but the timing of interactions is probabilistic. BTW, this is the reason for the probabilistic decay of subatomic particles. What's important is that, in the end, all conservation laws are obeyed. Telling it like I see it. Louis Savain Why Software Is Bad and What We Can Do to Fix It: http://www.rebelscience.org/Cosas/Reliability.htm |
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Ben,
Actually programming a quantum computer should be quite simple ---- just map your problem's NP complete portion to the D-wave quantum computer's NP complete problem --- and do the non NP complete problem part (the mapping part) on a digital computer. There are papers saying (by researchers other than D-wave) that a quantum computer can do what a digital computer cannot. So you can never get digital computer hardware to emulate a quantum computer. A quantum computer (forgot how many qubits but very small) can handle 10^300 states, which is more than the number of protons in the known universe. I also read an article, which says that a quantum computer is like cold fusion ---- neither will happen. I met an employee of D-Wave a few months ago and I believe they're legit, but I don't think there's much practical value in this offer; you'd almost certainly get much better turnaround times from an emulator running on your local machine. The only advantage of using the real hardware is that you might find bugs in it (or in quantum mechanics, but I doubt that). -- Ben |
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On 2 Mag, 18:03, Traveler wrote:
Everyone working on quantum computers is either a fraud or a fool or both. Do you know what Quantum Computing is? What do you think of the Shor's algorithm, the Grover's Algorithm and quantum cryptography? All frauds? |
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On May 2, 10:03 am, " wrote:
Ben, Actually programming a quantum computer should be quite simple ---- just map your problem's NP complete portion to the D-wave quantum computer's NP complete problem --- and do the non NP complete problem part (the mapping part) on a digital computer. There are papers saying (by researchers other than D-wave) that a quantum computer can do what a digital computer cannot. So you can never get digital computer hardware to emulate a quantum computer. A quantum computer (forgot how many qubits but very small) can handle 10^300 states, which is more than the number of protons in the known universe. I also read an article, which says that a quantum computer is like cold fusion ---- neither will happen. I met an employee of D-Wave a few months ago and I believe they're legit, but I don't think there's much practical value in this offer; you'd almost certainly get much better turnaround times from an emulator running on your local machine. The only advantage of using the real hardware is that you might find bugs in it (or in quantum mechanics, but I doubt that). QP-solvable problems ( and the more technologically relevant BQP subcollection ) have not been shown to contain NP-complete problems also the D-Wave machines are allegedly hybrid architectures with only a handful (16?) of qubits available this only begins to allow a very restricted set of quantum simulations which is where the money for quantum computing is right now ( molecular conformation and drug binding, collision analyses and fusion, ... ) the banking industry will adapt to using complete encryption techniques as the need arises but that is already doable without full quantum computing -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- galathaea: prankster, fablist, magician, liar |
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On 2 Mag, 22:03, galathaea wrote:
the banking industry will adapt to using complete encryption techniques as the need arises but that is already doable without full quantum computing It is belived that as soon as a quantum computer with a significant number of qubits (thousands) becomes available, asymmetric cryptographic and key exchange algorithms such as RSA and Diffie- Hellman will be practically broken, forcing organization to move to other systems, possibly quantum key exchange protocols (that are considered the most feasible application of quantum computing for now). |
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On 2 May 2007 12:27:43 -0700, Vend wrote:
On 2 Mag, 18:03, Traveler wrote: Everyone working on quantum computers is either a fraud or a fool or both. Do you know what Quantum Computing is? What do you think of the Shor's algorithm, the Grover's Algorithm and quantum cryptography? All frauds? Do you know why quantum processes are probabilistic? Louis Savain Why Software Is Bad and What We Can Do to Fix It: http://www.rebelscience.org/Cosas/Reliability.htm |
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Can quantum computers be used to design quantum computers ?
The D-wave computers played Sudoku in the demonstrations. How difficult is that to program ? Is Sudoku a good comparison with text-search, video search, bio- informatics search ? Thanks, Erach On May 3, 2:52 am, Vend wrote: On 2 Mag, 22:03, galathaea wrote: the banking industry will adapt to using complete encryption techniques as the need arises but that is already doable without full quantum computing It is belived that as soon as a quantum computer with a significant number of qubits (thousands) becomes available, asymmetric cryptographic and key exchange algorithms such as RSA and Diffie- Hellman will be practically broken, forcing organization to move to other systems, possibly quantum key exchange protocols (that are considered the most feasible application of quantum computing for now). |
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On 3 Mag, 00:30, Traveler wrote:
On 2 May 2007 12:27:43 -0700, Vend wrote: On 2 Mag, 18:03, Traveler wrote: Everyone working on quantum computers is either a fraud or a fool or both. Do you know what Quantum Computing is? What do you think of the Shor's algorithm, the Grover's Algorithm and quantum cryptography? All frauds? Do you know why quantum processes are probabilistic? Not all of them. Anyway, what is the problem with that? Many algorithms implemented on classical computers are probabilistic, and it is usually difficult to properly simulate randomness with a deterministic machine. Louis Savain Why Software Is Bad and What We Can Do to Fix It:http://www.rebelscience.org/Cosas/Reliability.htm Ignorant rant. How are you going to run "non-algorithmic software" (whatever it means) on an algorithmic computer? Do you know that logic hardware circuits are Turing-complete? For each computer program there exist an equivalent digital hardware circuit and viceversa. |
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