Quantum Computing: A processor, inside a processor, inside an atom, inside the North Pole, inside an inverted North Pole, inside your brain. Got it coach.

I have a theoretical degree in physics.

(Year 2050) QC users "console peasants can only calculated 200 quadrillion outcomes per second, they can't even emulate 15 parallel universes in the Sims, they had to limit it to 12 parallel universes".

I once tried to drink the cooling liquid stuff out of my computer.

0:18 illuminati comfirmed

But can it run minecraft?

Half Life 3 will run on a quantum processor

4:29 "violent video games" = GTA V 4:31 "sexually explicit videos" = Game of Thrones 4:34 "violent sexually explicit video games" = Arthur

its funny because the "spin up and down" is only a small part of heisenberg's probability function. You need shape, size, spin, and hybrid information to get the probability of a VECTOR. The output of a qubit is not a probability up or down. its the probability that its in a specific location relative the core of the atom. So the output instead of a 0 or 1, is a 0 or a 1 plus the Vector location where it has the highest probability it can be. Yes the primary usage of the Vector is to get the percentage of up or down, but the percentage is not the output. to get the percentage you need to know the highest probability of where it is first.

4:35 why Arthur?? lol

DISCLAIMER : This video is extremely dangerous and may result in brain damage. Watch at your own risk.

Ok one day we get faith healing videos then quantum physics, come on this is all over the place.

If your still confused after this video, I read a book that really helped me understand this topic. Look up A Shortcut Through Time the Path to a Quantum Computer. Its a small book and can be read relatively quickly (that's assuming you comprehend what the author is saying; however he does use tons of examples, analogies, and restates technical language in layman's terms). It's definitely worth a read if you're interested in this subject. Hope it helps! :)

*tries learning something new* *linus talks to fast to allow me to remember everything*

gravity doesn't pull you harder when you're at the top :p

I've been watching this video over and over for the past year, and still only understand 10% of Linus' extremely simplified summary of what quantum computing is. I'll keep trying, probably will achieve understanding in about 20 years.

I can usually understand all the techquickie content but this one is over my head maybe I'm dumb or maybe its just a lot to learn in just one short video.

There have been plenty of Techquickie's that I didn't understand the concepts of before, but this one is a whole 'nother level of confusing.

Not atomic size. Subatomic size.

There is one fundamental concept missing from quantum computing. The act of measuring, collapses all the super positioned states. You may be able to get data super positioned inside qubits for processing, but the final result HAS to result in classical format.

Does that mean a quantum computer can brute force the sh*t out of any encryption method and just output the answer?

I cannot wait until this technology becomes available to your average consumer.

I love how Linus says "against". "Agaeenst"

Quantum computer + supercomputer = Quantum supercomputer (AKA Terminator)

As a physicist, I will say this is a very well explained video for the masses

ĤΨ=EΨ amirite? Honestly, I'm a little concerned about the ever growing chasm between how advanced our technology is and how much most people understand it, and that's not the technology's fault, it's the people's fault.

I love the thumbnails of every techquickie video, they are always as epic as they can get.

This video needs an update, 3 years is a long time in the tech world

Wow linus... your neck actually changes color in this vid :O . Awsome

Quantum computing got me thinking like "Me hoy me noy"

Brother I have to say, you deserve a cookie. Your creative jokes cleverly leading to your sponsors and the entire idea of this work is most impressive. You deserve some clear recognition for this stuff, for real. F'n genius man, BRAVO

From Computers to Quantum Computers, I think they are all a giant calculator calculating so fast .

Yeah quantum computers are cool. Does it get good fps on CSGO?

I love these videos, I feel like I'm learning so much!

basically it would be really slow for games/videos but amazing for working out algorithms and complex math equations

"What does theoretical physics have to do with improving processor performance?" Pretty much everything. There'd be no transistors without the discovery of quantum mechanics c. 1926, which is part of theoretical physics. I'm sure physics (condensed matter physics, too) helps improve non-quantum processors. Also helps with hard drive space. Electrical engineers make use of theoretical physics -- in particular, Maxwell's equations and the Lorentz force law, and their consequences. And there's a lot more, but that would veer off topic too much.

So, given my limited understanding of this please feel free to correct me if I am wrong, but quantum computers will never be consumer-grade capable, due to the need to supercool the atoms involved, and because a consumer won't be interesting in more accurately researching weather patterns. But then, what is the future of consumer grade computing? We're reaching the peak of Moore's law soon, with maybe 8 years left before it simply becomes impossible to shrink the manufacturing process down any further because of electron resistance and quantum tunneling. What comes after that? Will we just be stuck at that level of processing power? I guess it's not such a terrible thing, it'll still be fast, but there's got to be a way to breakthrough this barrier.

0:17 You think we're blind?? ;d

@0:20 this stock photo matches that talk bubble so terrifyingly well 😂

I love how much the stuff written on the board looks complicated at first with a quick look, but is actually really simple stuff x) 0:17

gordon freeman never told me quantum computers are the next logical step, linus.

Well, Linus its a cool Video!! And You covered almost all questions that most people have on quantum computer!!!! Awesome Episode as always. Thanks Linus and team for making these amazing informative episodes its really helpful!!!

>sees thumbnail; you had my interest >watches video; now you have my attention

Keeping a definite watch on the quantum computer, could be very revolutionary..

squidward: FUTURRRREEEE!

Make a video about contrast ratio of displays

Ambitious attempt to explain spin and the concept of superposition under three minutes. I have to wonder if someone who didn't already understand would after watching this.

one scary thing they can be used for is breaking the encryption that keeps you information safe online

I am here just after 3 years this video was uploaded.

Oh yes, my 420 GHZ processor will come soon, but I'll settle with 69 GHZ for now

These are always fun even when I already know what's up :)

Linus, quantum spin is not the same as "the electrons spinning" in the literal way you describe. It refers to the way a spherical shell of spinning charge creates a dipole magnetic field up or down (the "up" and "down" states). The name stuck, but is not a physical description of the actual world.

But can it run Crysis

Who did also see the illuminati symbole at 0:19?

This was one of the best ad introductions ever, lol

Here is my short explanation: Having 4 qubits = needs 2^4 probability amplitudes to describe each state: a1 |0000> + a2 |0001> + ...... + a15|0001> + a16 |1111> = 2^4 pieces of information in 4 qubits Quantum computing operators act on individual bits, but they are actually manipulating 2^4 probability amplitudes at same time

We need to start growing huge brains in labs and combine them with traditional computing, Intel take note... Also i'll have my money in bonds.

But can it run crysis?

With a quantum storage drive you could store data within data, xrays within video, ultraviolet, maybe even gamma rays. You've got the whole freakin bandwidth to use here, and I'm not just talkin polarities, those angle's man, and patterns, and arrays... my god

Great explanation! I recently wrote a paper on this and I wish this video existed at the time so I could have made references to it.

0:15 illuminati confirmed!!

i saw you illuminati...YOU CANT HIDE FROM MEEEEEEE

Well, it actually works kind of like a person who tried to escape a labyrinth. But instead of trying all possible routes one at a time, he tried them all at the same time and then gives the correct answer to the person (user) who wants to know.

im gonna have to watch this video 30 times. these are the kind of videos i like.

I always knew Linus was with the Illuminati! I'm not crazy!

my quantum 4x nvidia titan sli black edition tournament yogurt cc shadowdancer can make quatum my fps to glorious 4k

when i was at University i wrote my dissertation on Artificial Intelligence in games, namely proactive persistent agent architecture. basically brains for npcs, using a combination of scheduling and a neural network. this kind of computing would be amazing for AI, as nearly all computation time is taken up crunching floating point variables for fuzzy states.

I was preparing myself to correct any mistakes you would make, but you didn't. thanks.

listen.. i think i need a qantum computer.. because.. Minecraft is too demanding!!! i hope these quantum computers are strong enough for.. at least.. minecraft! because lets face it, nothing in our world, or in our observable universe can compare to how sophisticated Minecraft is.

#lukesstreammasterrace 1st!

They don't mention it in the video, but if you want to know more about quantum computing and such, check out D-wave systems. They seem to be the highest on the quantum computing throne right now.

i love techquickie because its a 5 min video that takes me 20 mins to watch

So.......Will it run Minecraft?

"Arthur Gets Along" LMAO that is too funny...

Great video guys, but I'm a physicist, and you made one mistake that just so happens to be a pet peve of mine. Electrons don't actually spin. The quantum property of spin acts a lot like a normal angular momentum created by a spinning mass, but there are a few things that prevent it from actually being that. The first problem is that electrons don't have a volume, and for that matter no fundamental particle's do. So it doesn't make sense for something with no shape to spin. The second, and related problem is that if the electron were actually spinning and did have a volume, then it's outer most points would be moving faster than the speed of light for it to generate angular and momentum of it's spin. It turns out that all fundamental particles have spin, and it's actually a fundamental property of the particles. Essentially, it's an amount of angular momentum that the particle always has, no matter what. It's a really strange thing to think about, but it turns out that the universe works this way. Keep making great videos guys

you are the first person that actually made sense normally people only as far as its in 2 places at the same time or they start talking about cats

I like Schrodingers Cat is a good example of something being in two states simultaneously. A cat is penned up in a steel chamber [from which no information can escape, no sound, light, radiation, or other form of information], along with the following device (which must be secured against direct interference by the cat): in a Geiger counter, there is a tiny bit of radioactive substance, so small, that perhaps in the course of the hour one of the atoms decays, but also, with equal probability, perhaps none; if it happens, the counter tube discharges and through a relay releases a hammer that shatters a small flask of hydrocyanic acid. If one has left this entire system to itself for an hour, one would say that the cat still lives if meanwhile no atom has decayed. The psi-function of the entire system would express this by having in it the living and dead cat (pardon the expression) mixed or smeared out in equal parts. Quantum Physics is a very strange and interesting field of study.

Okay, a few things. I think you got the energy levels of spin up and spin down reversed. Where in a magnetic field spin up is normally defined as the spin that is aligned with the magnetic field. As a second point, diamond semiconductors are looking like they will be the next step in personal processors. This is mostly due to the melting point being pushed away from 128*C up to around 450*C.

The real advantage of quantum computing is that it can create truly random numbers

0:18 OH MY GOD. That explains everything.

I've heard the explanation like 6-7 times, and this is the first time I get it. Jesus f*** - Thank YOU

please more on this its great to look in to

Gotta love the thumbnail

bruh i got a quantum computing ad on this video

Dat quantum leap reference doe... love it.

I was told that there were four primary values that quantum computers could return "1", "0", "both", and "null...or neither". I'm having trouble now picturing a null value return on something that is still present.

When you say that gravity would be working it's hardest at the apex of the swing that's actually not true, in fact the force of gravity would be the greatest during the LOWEST point of the swing, since gravity is inversely proportional to the square of the distance between the objects it is acting upon, and technically at the apex you are farther from Earth...

It was also seen on the movie Transcendence how Quantum Processors are capable of.

He always sneaks his add in on his last sentence to get u while your focued on what hes saying. Gets me every time

I both understand and don't understand Quantum Physics at the same time, and that's why it's my favorite thing.

+1 for the Quantum leap reference.

Almost correct. Not the number of processes is high but the way it works means an algorithm can be ran for EVERY data of a specific size (i.e. number of qubits) AT ONCE. This is what makes QC especially useful against RSA and public key criptography itself.

Dude....excellent job. I learned a lot more here than from some of the quantum physics experts I've had the pleasure to interview. A+ for you!!!!

"We're going to need to watch that again." - John Locke

I think this video was lacking a bit of key information so I just want to clarify. A qubit got four positions while two of those are superpositions, while in theory these two superpositions are capable to hold information though something quantum computers still struggle to read and write. That means that a single qubit can hold four positions instead of two positions in bits. This is NOT just doubled the information as we can see when we factorial bits and qubits, four bits would give 16 different possibilities while four qubits would give 256 possibilities but that's not everything, qubits can be quanta entangled which means that two qubits are entangled and by measure one you measure both that got the potential of a single pair of entangled qubits to hold 16 positions of information at once and if we take four of these pairs we got 65536 different positions and while in theory it should be possible to form pairs of entangled qubits far more than just two, like if four qubits are entangled in four pairs we're up in tens of billions of positions but that technology may not be possible and if so, very far away. To roundup, quantum computing is still in it's infancys and there's lots of problems to solve, physics to be understood and discovered before we can really take advantage of the qubits superpositional properties. We also need to solve how to isolate the qubits so they can't escape the system, this is also a very fundamental property of qubits, they can pop out of existence to reappear somewhere else in something called quantum tunneling, this is also the reason why there's an absolute minimum size of a transistor as when the walls gets to thin quanta may just tunnel out of the system.

As a person who writes science fiction, the quantum computer is going to kick butt, over regular digital bit computers. I think the Qubit is the coolest concept. I may even name a cat after it one day...

Whoa, when did KZfaq start supporting 4K resolution for videos?

ok bro....i gotta give you props on this vid. your graphics guy, got a spit take out of me twice. the roided hamster and that violent sexual explicit arthur cover was absolutely hilarious. loved it. great video.

Linus, just rest assured there's a silent majority of people watching your videos and not making "moronic" comments . Your video's are much appreciated.

Dayum... nothing beats a TechQuickie episode...