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» what are quantum computers and what does it mean for the future?
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post 1645649133 08-24-2021, 06:25 PM
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what are quantum computers and what does it mean for the future?

heard it means the collapse of crypto and financial banking
post 1645649533 08-24-2021, 06:31 PM
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Simple terms.


You're fukked.
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post 1645649683 08-24-2021, 06:33 PM
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I used to read quite a bit about quantum computing but I don't remember it all now. The one thing that stood out to me was that it's feasible that there could be a quantum computer in the not too distant future that would have more bits than there are atoms in the universe. In other words, the most advanced super computers of today would look like an Atari 2600 by comparison.
post 1645649853 08-24-2021, 06:35 PM
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There’s either 0 or 1 in binary digital code. 0’s and 1’s create data.

In a quantum computer, it can be both 0 and 1 at the same time. Or something like that. This apparently increases the computational ability drastically.
post 1645650883 08-24-2021, 06:52 PM
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Originally Posted By Ausaric
There’s either 0 or 1 in binary digital code. 0’s and 1’s create data.

In a quantum computer, it can be both 0 and 1 at the same time. Or something like that. This apparently increases the computational ability drastically.
Yeah, that's basically the gist of it - you go from having 2 labels per bit (0 vs. 1) to 3 (0, 1, or a third one), or maybe there's even >3 label implementations (not super familiar with the topic).

It seems small, but when you're talking about exponential effects applied over however many *illions of bits, it becomes massive.

Consider the difference between the exponentials 2^n and 3^n.
Say n = 100, which is pretty small obviously.
2^100 = 1.25*10^30
3^100 = 5.15*10^47
That's amultiplicativeincrease of ~4*10^17 (400 quadrillion). Chit adds up.
post 1645651203 08-24-2021, 06:57 PM
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In practical terms, the strongest encryption currently available would be child's play to crack with an advanced quantum computer.
post 1645651273 08-24-2021, 06:58 PM
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Originally Posted By legbroke
Yeah, that's basically the gist of it - you go from having 2 labels per bit (0 vs. 1) to 3 (0, 1, or a third one), or maybe there's even >3 label implementations (not super familiar with the topic).

It seems small, but when you're talking about exponential effects applied over however many *illions of bits, it becomes massive.

Consider the difference between the exponentials 2^n and 3^n.
Say n = 100, which is pretty small obviously.
2^100 = 1.25*10^30
3^100 = 5.15*10^47
That's amultiplicativeincrease of ~4*10^17 (400 quadrillion). Chit adds up.
Thanks for explaining it mathematically. I only watched a couple YouTube videos about it.

Some people think our brains are quantum computers via microtubules. What do you have to say about that?
post 1645651393 08-24-2021, 07:00 PM
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it's overhyped. it won't do anything to crypto
post 1645652953 08-24-2021, 07:27 PM
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Originally Posted By Ausaric
Thanks for explaining it mathematically. I only watched a couple YouTube videos about it.

Some people think our brains are quantum computers via microtubules. What do you have to say about that?
Sure thing brah, though really I've only just gotten the basics through my CS classes - haven't done any focused study on it.


P.S. Just did a quick search on "brain microtubules" after typing out my original answer, and I stumbled across what looks to be all the papers/info you must have come across for quantum microtubules. I think it's easy enough to consider the brain a computer [see my below answer], but I really have no clue on the quantum aspect. A quick skim makes it seem like actual quantum phenomena are causing the exchange of information [rather than electrical impulses in a traditional electronic computer]. I guess if that's happening, I'd agree that it's a quantum computer, but my only physics experience is 101 and 102 classes, so I have no idea how legit those phenomena are.


Original answer:
Re: microtubule quantum computers, (while I don't really have a clue what microtubules are) I'd think about what is any sort of computer first - imo, that's some sort of system composed of gated connections that are triggered by impulses. It's a machine of sorts that models a function; it is made of physical components and takes inputs and follows an algorithm to produce desired outputs.

I feel like with a definition like that, even with my limited neuroscience knowledge, calling the brain a computer seems easy - neurons are connected by synapses and selectively triggered by electrical impulses to produce predictable outcomes.


Whether it's a quantum computer, fuk if I know. Don't know enough about the definition of "quantum" or about biology/neuroscience in general to answer that. If the simple meaning of quantum is "bits have more than two possible values," then I'd probably place money on the human computer being "quantum." If anything, I'd wonder if neurons deal in bits with a continuous spectrum of values [e.g. all the infinite decimal values from 0 to 1] rather than a discrete 2-3 values.
post 1645654823 08-24-2021, 08:03 PM
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Originally Posted By ninetynine8
it's overhyped. it won't do anything to crypto
mirin' detailed concise argument

the nsa was looking to build their own then suddenly stopped, i wonder if they came to the same conclusion?
post 1645657753 08-24-2021, 08:49 PM
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Myth us humans are way too dumb to create something like that
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