What is Quantum Computing..

dizzie · Oct 13, 2019

Will it be the end of all encryption?

I kinda get what it is, but when it becomes a standard does the revolving door start all over again? You make it, we break it culture.

And just how much ahead is it? A jump or a step?

Do you think we will hit a brick wall in computing at some point?

The scary part is that big tech like facebook and google seem to be into this and fuck them.

Araxen · Oct 14, 2019

It's the end of non-quantum encryption. I've tried to wrap my head around quantum computing and I'm too dumb.

iannis · Oct 14, 2019

Q encryption cannot be broken in principle by conventional computing.

I don't see why it would render conventional encryption obsolete though. Qputers are, in principle, much worse at computation which our conventional computers are specialized for.

Just like everything there will be considerations of strengths and weaknesses. It's called a computer, but it models quantum states and computes outcomes rather than processes. It's a different kind of logic.

That's assuming we ever get one really working. I know they have one at MIT, but I first read about it in the late 90s and not a lot is different by 2015.

Zapatta · Oct 14, 2019

Why build em? We already know the answer is 42.

Borzak · Oct 14, 2019

Zapatta said:
Why build em? We already know the answer is 42.

Correct. High school quiz bowl question "Gallons in a barrel of oil", teacher always said guess "42". It was right.

wormie · Oct 14, 2019

Since my social media had been lit up for weeks about Quantum Computing and now it has appeared here I am going to go ahead and say that Quantum Computing is something that a recent start up is trying to get seeded and they hired the right PR firms.

Noble Savage · Oct 14, 2019

This is a good video to get started. I like it because the professor explains Quantum computing at 5 different educational levels. Plus I found myself wanting to bone her by the end so that was a positive.

Mist · Oct 14, 2019

Very good article:

The Case Against Quantum Computing - IEEE Spectrum.

Kiroy · Oct 14, 2019

Mist said:
Very good article:

The Case Against Quantum Computing - IEEE Spectrum.

can you tldr this for me, but like I have 148 iq

Jovec · Oct 14, 2019

Kiroy said:
can you tldr this for me, but like I have 148 iq

The article? That a useful quantum computer will need to monitor such a huge number of quantum states that it will not be possible. The key point in the article:

To repeat: A useful quantum computer needs to process a set of continuous parameters that is larger than the number of subatomic particles in the observable universe.

Attog · Oct 16, 2019

Araxen said:
It's the end of non-quantum encryption. I've tried to wrap my head around quantum computing and I'm too dumb.

To be able to wrap your brain around it you need your brain to be in two places and two states at the same time, which requires you to dip your brain into a vat of liquid hydrogen.

iannis · Oct 16, 2019

Jovec said:
The article? That a useful quantum computer will need to monitor such a huge number of quantum states that it will not be possible. The key point in the article:

That's true if you try to simulate quantum states computationally by solving schroendinger. If you construct a quantum state (possible) and isolate it to either measure or modify it you only need the same number of particles as what you are modelling.

At least that's what susskind said, and he's smart and shit!I

I'm not sure if you should call that a computer, but I'm not sure what else you would call it either.

Noble Savage · Oct 17, 2019

Jovec said:
The article? That a useful quantum computer will need to monitor such a huge number of quantum states that it will not be possible. The key point in the article:

I'm not sure I agree with the assessment from the article. Quantum supremecy, the point where quantum computers out calculate normal computers, is probably less then 5 years away. The problem is that quantum computers will be useful for a VERY niche set of calculations.

iannis said:
I'm not sure if you should call that a computer, but I'm not sure what else you would call it either.

This is probably the hardest part of wrapping your head around quantum computing. We are at such an infancy stage with it that the true nature and power of quantum computing won't be realized until we have several working ones in the world to play with and identify workloads that they excel at. Imagine the porn you could look at on quantum computers, you could look at a picture of a naked lady that Fedor posted and not have to wonder if it was a real women or a tranny. The naked lady would be both simultaneously.

Lendarios · Oct 17, 2019

this is as useful as string computing.

ie it isn’t.

khorum · Oct 17, 2019

Noble Savage said:
Quantum supremecy, the point where quantum computers out calculate normal computers, is probably less then 5 years away. The problem is that quantum computers will be useful for a VERY niche set of calculations.

With exactly that sort very narrow niche application, Google's Sycamore project claims to have achieved Quantum Supremacy with a calculation that Sycamore achieved in less than four minutes but would take the world's most powerful classical computer more than 10,000 years to complete:

Quantum Supremacy Using a Programmable Superconducting Processor.pdf

https://ntrs.nasa.gov/search.jsp?R=20190030475 2019-09-14T15:29:28+00:00Z. NASA/TP-2019-220319. Quantum Supremacy Using a Programmable Superconducting Processor Eleanor G. Rieffel NASA Ames Research Center. August 2019. NASA STI Program ... in Profile Since its founding, NASA has been dedicated...

www.docdroid.net

Furry · Oct 17, 2019

Quantum computing is based on the idea that QFD can produce concrete results. QFD is based on the theory that you can't achieve concrete results.

I've never understood why they're wasting their time, since they are trying to use a theory in a way that completely disproves it. There's a reason there's been no progress in the field.

Pharazon2 · Oct 17, 2019

I remember giving a presentation in my college speech class some ~20ish years ago on quantum computing based on an IEEE article I had read at the time. At a heavy engineering school, but I think there weren't a lot of engineers in that particular class. The other students in the class were looking at me like I was from another planet by the end of my short talk. I did say at the time that it was probably still 10-20 years away... will be interesting to see where it is in another 10-20 years. Not that it isn't interesting to track now, but a world where these are consistently applied towards problems is probably still a couple decades out at least.

Although there could be some chance its the fusion of computing that we'll be saying is always 20 years out for a long time. Tough problems.

iannis · Oct 19, 2019

It is hard for me to see how Quantum computing will be useful outside of those few problems that it is designed to be useful for. It's really hard to see how it would be useful for anything except encryption, research, and an extremely fancy toy for professional mathematicians.

But I don't know if it would have even been possible to predict a Nvidia graphics card looking at Babbage's contraption no matter how visionary you might be.

Punko · Oct 19, 2019

Jovec said:
The article? That a useful quantum computer will need to monitor such a huge number of quantum states that it will not be possible. The key point in the article:

Like all the porn on the web, and all the possible scenario's each could have?

Where do I donate.

Adebisi · Oct 23, 2019

I don't know much about computer science, but where I get stuck with quantum computer is how it can be used to its potential when it's all being built using (current year) computer systems and technology. Wouldn't you still be using good ole CPUs to administer these quantum systems, monitor them, and retrieve usable results?

Wouldn't that be a huge bottleneck for what they're saying these quantum computers are capable of?

What is Quantum Computing..

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