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Willow, Our Quantum Chip

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Re: Willow, Our Quantum Chip

#301
post #133

Earlier quoted context omitted.

Is it really fair to call that "computation"? I am definitely not an expert, but it seems they are just doing a meaningless operation which happens to be trivial on a quantum computer but near-impossible to simulate on a classical computer. To me that sounds a bit like saying my "sand computer" (hourglass) is way faster than a classical computer, because it'd take a classical computer trillions of years to exactly si…

Yes, this is exactly what it is doing [1]. The area of research is Noisy Intermediate Scale Quantum, and has arisen specifically to prove that quantum supremacy is possible in practice. It is currently the focus of pretty much all quantum computing research because attempts to produce a generalized quantum computer have all failed miserably. Existing practical quantum computers (like DWave) perform various annealing…

Are DWave still in the running? They used my PerfectTablePlan table seating software back in 2007 as the front end to demonstrate solving a combinatorial seating problem: https://www.perfecttableplan.com/newsletters/newsletter10_we...

Re: Willow, Our Quantum Chip

#302
post #195
post #8

> It lends credence to the notion that quantum computation occurs in many parallel universes, in line with the idea that we live in a multiverse I see the evidence, and I see the conclusion, but there's a lot of ellipses between the evidence and the conclusion. Do quantum computing folks really think that we are borrowing capacity from other universes for these calculations?

The Schrödinger equation inherently contains a multiverse. The disagreement is about whether the wave function described by the equation collapses to a single universe upon measurement (i.e. whether the equation stops holding upon measurement), or whether the different branches continue to exist (i.e. the equation continues to hold at all times), each with a different measurement outcome. Regardless, between measurem…

> The Schrödinger equation inherently contains a multiverse.

Just to be clear, where in the Schrödinger equation (iħψ̇ = Hψ) is the "multiverse"?

Re: Willow, Our Quantum Chip

#303
post #137

Earlier quoted context omitted.

Science is not based on consensus seeking. Science is about coming up with the best explanations irrespective of whether or not a large chunk does not believe it. And best explanations are the ones that is hard to vary. Not the one that is most widely accepted or easy to accept based on the current world view.

Actually it is exactly based on hypotheses that are verified.

I think the idea here is that the choice on which hypothesis to verify is based on the risk assessment of the scientist whose goal is to optimize successful results and hence better theories are more likely to surface. In this way one does not need to form a consensus around the theory but instead make consensus on what constitutes a successful result.

Ideally this would be true, but funding agencies are already preloaded with implicit asssumptions what constitutes a scientific progress.

Re: Willow, Our Quantum Chip

#304
post #87

> It lends credence to the notion that quantum computation occurs in many parallel universes, in line with the idea that we live in a multiverse, a prediction first made by David Deutsch. Processing in multiverse. Would that mean we are inyecting entropy into those other verses? Could we calculate how many are there from the time it takes to do a given calculation? We need to cool the quantum chip in our universe, ho…

The many-worlds interpretation of quantum theory [1] is widely considered unfalsifiable and therefore mostly pseudoscientific. This article is way in over it's head in claiming such nonsense. [1] https://en.wikipedia.org/wiki/Many-worlds_interpretation

That depends on whether you think that MWI is making claims beyond what QM claims, or if you think that MWI is just a restatement of QM from another perspective. If the latter then the falsifiability of MWI is exactly the same as the falsifiability of QM itself.

Re: Willow, Our Quantum Chip

#305
post #8

> It lends credence to the notion that quantum computation occurs in many parallel universes, in line with the idea that we live in a multiverse I see the evidence, and I see the conclusion, but there's a lot of ellipses between the evidence and the conclusion. Do quantum computing folks really think that we are borrowing capacity from other universes for these calculations?

I was also really taken aback by this quote. I have no idea who put it there, but I can assure you the actual paper contains no such nonsense. I would have thought whoever writes the google tech blogs is more competent than bottom tier science journalists. But in this case I think it is more reasonable to assume malice, as the post is authored by the Google Quantum AI Lead, and makes more sense as hype-boosting buzzw…

There are compelling arguments to believe in the many-worlds interpretation.

No sign of a Heisenberg cut has been observed so far, even as experiments involving entanglement of larger and larger molecules are performed, which makes objective-collapse theories hard to consider seriously.

Bohmian theories are nice, but require awkward adjustments to reconcile them with relativity. But more importantly, they are philosophically uneconomical, requiring many unobservable — even theoretically — entities [0].

That leaves either many-worlds or a quantum logic/quantum Bayesian interpretations as serious contenders [1]. These interpretations aren't crank fringe nonsense. They are almost inevitable outcomes of seriously considering the implications of the theory.

I will say that personally, I find many-worlds to focus excessively on the Schrödinger-picture pure state formulation of quantum mechanics. (At least to the level that I understood it — I expect there is literature on the connection with algebraic formulations, but I haven't taken the time to understand it.) So I would lean towards quantum logic–type interpretations myself.

The point of this comment was to say that many-worlds (or "multiverses", though I dislike the term) isn't nonsense. But it also isn't exactly the kind of sci-fi thing non-physicists might picture. Given how easy it is to misinterpret the term, however, I must agree with you that a self-aware science communicator would think twice about whether the term should be included, and that there may be not-so-scrupulous intentions at play here.

Quick edit: I realise the comment I've written is very technical. I'm happy to try to answer any questions. I should preface it by stating that I'm not a professional in the field, but I studied quantum information theory at a Masters level, and always found the philosophical questions of interest.

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[0] Many people seem to believe that many-worlds also postulates the existence of unobservable parallel universes, but this isn't true. We observe the interaction of these universe's every time we observe quantum interference.

While we're here, we can clear up the misconception about "branching" — there is no branching in many-worlds, just the coherent evolution of the universal wave function. The many worlds are projections out of that wave function. They don't discretely separate from one another, either — it depends on your choice of basis. That choice is where decoherence comes in.

[1] And of course, there is the Copenhagen "interpretation" — preferred among physicists who would rather not think about philosophy. (A respectable choice.)

Re: Willow, Our Quantum Chip

#306

They opened the API for it and I'm sending requests but the response always comes back 300ms before I send the request, is there a way of handling that with try{} predestined{} blocks? Or do I need to use the Bootstrap Paradox library?

Write the catch clause before the try block

[deleted]

Re: Willow, Our Quantum Chip

#307

Earlier quoted context omitted.

I know Hartmut Neven personally and professionally, and have for decades. He's not anything like you claim he is. Attacking him for wearing a wristband? That's an ad hominem attack, and not worthy of my time to counter you on. The fact is that "Burners" are everywhere, nothing about Burning Man means someone is automatically a quack. Your distrust seems misplaced and colored by your own personal biases. The list of p…

> Attacking him for wearing a wristband? That's an ad hominem attack, and not worthy of my time to counter you on. I picked my words very carefully and I would appreciate if you responded to what I said, not what you think I implied. I specifically called out - I'm having feelings of bias. That in a field full of quack science and overpromises and underdelivery, I am extraordinarily suspicious of anyone who I feel mi…

>who I feel

You're basing things on your feelings, not personally knowing the person. I know you've alluded to that, but seriously, just stop.

> I worry when I see a person presented as an authoritative leader in the Quantum Computing domain demonstrate in their external presentation.

I'm not sure why how someone dresses makes you worry, especially since you aren't even involved in QC. Stop worrying about things you can't control, especially someone else's appearance. Has Burning Man taught you nothing? If you think it taught you to be biased towards someone based on their appearance, then I think you completely missed the point.

>as already happened with Google Glass

You may not know this, but he was tapped to lead the Google Glass project, and quickly got out of it. He felt that the silicon at the time was not capable of producing the results people wanted in the form-factor they were expecting. He was right. Of course tech has improved since then and better VR/AR glasses in a convenient form factor are just now starting to be a thing, but Google Glass is long since shuttered.

He didn't just come out of nowhere, he's been involved in actual AI (not LLMs) for decades. His company was bought by Google and is the basis for their computer vision systems, which is how he ended up at Google.

As for you supposing he's into "healing crystals" or any other wooo nonsense simply based on how he dresses, I have never known him to talk about such things at all, in all our conversations throughout the decades.

> This person's aesthetic reminds me of this.

You are barking up the wrong tree, and you should maybe tone down your judginess of others. I have news for you - you can't tell a book by its cover, but you sure are trying to. You just come off as being jealous that someone can have fun and also be a pioneer in QC. No doubt any person at the top of their field has plenty of haters, based on nothing more than "he doesn't dress like I expect him to".

Re: Willow, Our Quantum Chip

#308
post #264

Earlier quoted context omitted.

Uh, no? Not for large N. There are about 2^152 possible legal chess states. You cannot build a classical computer large enough to compute that many states. Cryptography is generally considered secure when it involves a search space of only 2^100 states. But you could build a computer to search though sqrt(2^152) = 2^76 states. I mean it'd be big--that's on the order of total global storage capacity. But not "bigger t…

Doing 2^76 iterations is huge . That's a trillion operations a second for two and a half thousand years if I've not slipped up and missed a power of ten.

Maybe 100 years from now we can do 2^18 quantum ops/sec and solve chess in a day, whereas a classical computer could do 2^36 ops/sec and still take longer than the lifetime of the universe to complete.

Re: Willow, Our Quantum Chip

#309
there is so much skepticism on quantum computing that instead of inflated marketing words one should always start by what the biggest problems are, how they are not still solved yet, and then introduce what the new improvement is.

Otherwise there is no knowing if the accomplishment is really significant or not.

Re: Willow, Our Quantum Chip

#310
post #226
post #205

Earlier quoted context omitted.

> Worth spending a little time doing some long tail strategizing I’d say. Yup, like Bitcoin going to zero.

> Yup, like Bitcoin going to zero. If the encryption on Bitcoin is broken, say goodbye to the banking system.

not really. banking systems have firewalls and access controls. quantum computations would be useless.
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