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$100,000 Prize: Prove Quantum Computers Impossible
mikejuk writes "Quantum computing is currently a major area of research — but is this all a waste of effort? Now Scott Aaronson, a well-known MIT computer scientist, has offered a prize of $100,000 for any proof that quantum computers are impossible: 'I'm now offering a US$100,000 award for a demonstration, convincing to me, that scalable quantum computing is impossible in the physical world.' Notice the two important conditions — 'physical world' and 'scalable.' The proof doesn't have to rule out tiny 'toy' quantum computers, only those that could do any useful work."
Just point a gun at his head and ask him "Convinced?"
Err, uh,
Didn't D-Wave sell a commercial Quantum computer to Locheed Martin in 2010? Almost a year to the day?
Someone explain to me the difference between this quantum computer and the one they're trying to prove doesn't exist, please.
moox. for a new generation.
I will prove Quantum Computers both possible AND impossible at the SAME TIME!
So I guess the proof would be that they do exist, but only if you don't observe one.
Never answer an anonymous letter. - Yogi Berra
D-Wave uses quantum annealing. This works for minimization problems, although it's unclear whether it's better than "simulated annealing". This does not work for problems like factoring integers, which "real" quantum computers can do.
(T>t && O(n)--) == sqrt(666)
A similar question could've been asked years ago, back when transistors didn't exist: 'I'm now offering a US$100,000 award for a demonstration, convincing to me, that scalable personal computing is impossible in the physical world.'
Using only technology available then, the answer would've to scale down tubes to the minimal size and go "well this computer's too weak to do anything useful, ergo it's impossible to have a personal computer that isn't just a toy computer." Then transistors happened.
These kinds of things are stupid, because you're asking for a demonstration to an engineering problem, when engineering is always capped by scientific research. You could have a perfectly "convincing" proof today and tomorrow a new discovery crumbles it all to the ground.
Unless a theoretical and fundamental proof can be made that quantum computing is impossible, there's no reason to say that it is, and I have serious doubts such a proof can be made considering what has been accomplished thus far. Current limitations are engineering issues, but nothing fundamental is stopping a useful and practical quantum computer from existing.
Ever try proving something that is not going to happen?
Try it, and you'll know that it's impossible to prove something that is negative - like proving quantum computer impossible
Muchas Gracias, Señor Edward Snowden !
When the status quo was a room full of vacuum tubes, I doubt that the way forward (solid state transistors) was as clear as you suggest. Hindsight is 20/20 and all that. There is a vast world of difference between making smaller, faster, better vacuum tubes, and making a transistor. So I think GP's suggestion that we are in the vacuum tube era of quantum computing is reasonable, and we are waiting on the equivalent of a quantum transistor to make quantum computing feasible.
The physics of oscillating crystals, such as those used in microphones and phonograph needles as well as radio transmitters, indicates that quantum computing could never not exist. Matched oscillating crystals have been in use for thousands of years and the mathematical model is proven by hundreds of different laboratory and home appliances; eg. an infrared spectrophotometric detector. The emission and absorption frequencies predicted by the mathematical model of the particle in a box (the basis for calculating electron dispersion around the nucleus and the fundamental beginning for subatomic calculations).
Particle in a box model translates into equations known as the Hamiltonian and, in combination with Eigenvalues calculated from the variables used in particle in a box modeling, generates the Schroedinger equation. Quantum computing could never be nonexistent because the mathematics of matched oscillating subatomic particles already has been proven millions of times over.
The marathon runner was not reporting a successful war campaign. The marathon runner was part of a system proving that those crystals do indeed oscillate, matched, from across the universe (at least 26.2 miles), in real time. Begin counting, begin running, when you arrive, repeat what they said back to them and report your current number. They will determine if your number matches theirs and if you repeat the exact words they said.
One aspect of the inside joke is that, when the marathon runner arrived and made his report, the response from the priests was,"That's _NOT_ what we said!" and they promptly hit him over the head with a baseball bat in frustration over the not completely failed experiment. "Don't tell anyone that he made it."
the NPG electrode was replaced with carbon blac
People were already working on solid-state transistors in 1946. The main difficulty was growing pure enough crystals.
Even without solid state transistors, computers would have continued to get more powerful and require less maintenance per tube as vacuum tubes improved (nothing like what was possible with solid-state transistors, of course). Remember, vacuum tubes themselves were only about 35 years old at that time--lots of improvement in size, power and reliabililty was possible, but work on them stopped when it became clear that transistors were so much better.
In the case of quantum computers, there are lots of ideas floating around, but no one actually has any clear idea of what will be needed to maintain quantum coherence across a large number of bits. In fact, it is not yet clear that it is possible.
The D-Wave computer uses quantum annealing which does not require coherence across a large number of bits, but which is also a LOT less useful than one that does.
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Science isnt about being right or wrong, its about looking for the answer, whatever it may be. Schroedinger posed a fantastic, perspective-altering question, and you dismiss it as 'pseudo-science'
Good-bye
This is a gross misunderstanding of the Schrodinger's cat thought experiment, and something of a fallacious presentation of it.
I don't think there was ever any doubt that a cat locked in a box for a sufficient length of time would expire. That is neither in doubt nor interesting.
The formulation deals with the status of a cat in a box present with some measuring apparatus capable of detecting decay of some isotope, linked to a sealed capsule of some poison, in a sealed container with a cat. Supposing the isotope has a roughly 50% chance of decaying in the next five minutes, and iff it decays the poison is released (killing the cat), after five minutes is the cat alive or dead?
The "collapse the waveform pseudo-science b***s***" here is simply translating the simultaneous probabilistic states into a single actual one. The reason this is relevant is in quantum mechanics there are real, measurable effects that occur as a result of the probabilistic waveform that differ from the effects of the collapsed state -- once you know whether the cat is alive or dead, in other words, you have a fundamentally different system than before it was observed.
It's not logarithmic, it's sqrt(). For a given number of bits (n) adding 1 extra bit requires n additional entanglements. Thus for n-qubits you must have n(n-1)/2 = (n^2 - n) / 2 entanglements. Doubling that increases the difficulty quadratically instead of linearly, but it's not the exponential growth in difficulty that you're implying.