For more on spin, check out: http://youtu.be/v1_-LsQLwkA

This video was supported by TechNYou: http://bit.ly/19bBX5G

A quantum computer works in a totally different way from a classical computer. Quantum bits or ‘qubits’ can exist in a superposition state of both zero and one simultaneously. This means that a set of two qubits can be in a superposition of four states, which therefore require four numbers to uniquely identify the state. So the amount of information stored in N qubits is two to the power of N classical bits.

Thank you to Andrea Morello and UNSW. For more info, check out: http://bit.ly/17wZ7lt

Dom Carter says

That physicist thought he was explaining himself but he really wasn’t..

TheJetnerd says

No replacement for nornal computer? Oh Maaaan, that means no pc laughing at

todays high end gaming rigs ;)

Siren Hound says

How would you debug a quantum computer?

John Jackson says

I didn’t understand a flipping’ word of that, and I studied Computer

Science at college.

I just kept thinking about cutting off that silly bit of hair under his

bottom lip.

In essence what he WAS saying is: it won’t make a faster computer But it

will make a computer that’s really good at breaking codes and reading your

e-mail.

Clicking2Win says

So. No 27k porn?

Sil3ntKilla01 says

BIT COIN MINING CHOOOO CHOO MUDDA FUKA

Μάριος Αντωνίου says

These guys think that we are idiots and they are trying to lie to us. Same

thing like energy solutions. Human mind always find answers. Of cource

Quartum cpu’s work faster and they are easy to program them. They just

dont want to program them. Quartum computers is the end of big company’s

silicon work. We gonna have unlimited calculations and we are set.

Company’s got depressed. Think if they knew we can have a computer with

unlimited calculations per second. They know we are not gonna need to buy

new trash computer again. Goverments are keep slowing us down to keep rich

men richer….

The peace maker says

I understand that quantum computers are using probability instead of

solidly well defined positions which allows quantum computers to increase

computing power exponentially instead of multiplicative. Since Moore’s law

is ending instead of creating quantum computers why don’t we use variable

voltages in transistors as as more states then just on and off 1 and zero.

Like if you know anything about transistors there on state is within some

range of voltage and the off state is also within some range of voltage

called the threshold voltage. Well why don’t we make computers slightly

more precise so that there are maybe 4 voltage ranges instead of just two.

Use a 4 number system instead of binary this would make computers far more

powerful and wouldn’t require a complete materials or computing revolution.

alexgrinkov says

I guess the future is hybrid CPU’s.

Just like we use specialized CPUs called GPUs to render images, we will use

QPUs (?) to calculate something which benifits from it, while still using

CPUs for all the other cases.

MrGridStrom says

Once our lithography reaches 4nm, CPU’s will be around 450 times faster,

than the fastest Xeon CPU we have today, at the date of this post; imagine

being able to render a 40 hour 8K video in 1 second (would you need more

speed). We need logical, practical computers in our future, sadly quantum

computing is just an unstable fantasy. Sorry to be the bearer of bad news,

but hey, feel free to prove me wrong.

UntoldAnimations says

Has gaming gone too far?

Science balls = loomynarty confirmed

Nethkrill Vesta says

Don’t understand a thing but still watching.

Christos Kettenis says

The magnetic field lines should be on opposite direction (0:50)

basketofpuppys says

i wish i was smart enuff to really understand this :0

Chance Wagy says

What I’ve figured from this is essentially that, due to superposition, any

particle is both active and nonactive at the same time, giving it two

states. Therefore, 1 particle has two states instead of one. This means

that, exponentially, particles together will have noticeable effects in

terms of states.

As where a classical bit can only have one state, a qubit is in two states.

Yes?

JohnMichael Bell says

What I’m still having trouble understanding is how can we get useful

results out of a machine whose state is based in probability and chance.

I’ve been looking up answers all day, but very few make sense to me.

hydrorecords says

DAYUM, two of the biggest pseudo-scientists on youtube in the same vid!

Sandu Zmeu says

Actually if you had 3 so called “compass pins” you have 9 bits of

information not 8. (sorry my English is not great)

BDGT says

Congratulation. You just explained randomized computation.

If the power of quantum computer had come from superposition of all 2^n

numbers then randomized computation would have given us the same power.

Because even in randomized computation we have probability distributionn

over all possible numbers. And similar to what you explained, the outcome

of the experiment is always just one number with certain probability

distribution.

It is just that in quantum computation, the amplitudes can be a “complex

number” (instead of real numbers) and thus unlike randomized computation

amplitudes can actually cancel out. So probably this is where the power

comes from. But in reality nobody yet knows why.

And if you look from complexity point of view, set of all problems that are

solvable by quantum machine in polynomial time is called BQP. Now we know

that BQP contains P. P is the set of all problems that can be solved by

classical computers in polynomial time. So certainly whatever can be done

by a classical computer in polynomial time can indeed be done by a quantum

computer in polynomial time.

Now factoring can be done in polynomial time by a quantum computer (Thanks

to Peter Shor). We don’t yet know a polynomial time classical algorithm for

that. So quantum is powerful in that sense.

But don’t get too excited as there is a interesting class of difficult

problems called NP-complete. Actually most interesting hard problems seat

there. And we don’t yet know if NP is in BQP.

Lolan Badeaux says

I Love your informational teachings, you have a gift of knowing how to make

learning fun, interesting, and easy to learn especially how you illustrate

details. Allow me to say two things. 1. This is the first time ive seen you

trudge through quickly explaining things. The spin up spin down between

particles turned to a fog, and even i advanced and knowing all about

particle spin had trouble following you. it felt void of the details that a

layman would need to connect to, to grasp each step along the way. That is

why your here isnt it, to help people learn that may not understand some

sciences? still i loved the video, your my favorite informer of math and

science. Ok # 2. Knowing a bit about particle spin, Its best explained how

einstein said it. Imagine I have two identical breifcases, and lets use

the analogy of 1 set of gloves as the two particles we create. Without

looking at which, i put one in each breif case. and you send them from that

spot to the ends of the universal bounderies in any direction. the only

information that is available and follows the laws of physics, is that

there are 2 particles and they have opposite spin. the laws are in place

already, and they werent spontaniously created light years away. they have

to travel apart and never faster than light. I believe personaly that media

and others that didnt understand at the time, needed a spectacle and

misturned what einstein really said. I dont believe he was puzlled or

thought it was spooky. I think what he was saying, if the process wasnt

like he exclaims, then it would be a spooky action at a distance. media

hearing him say something is spooky gets spun. Einstein “SAID”

Thankyou if you took the time to hear my views

Milky Way Laniakea Superclusterite says

I really like that dude, his eyes are so expressive. Bitchin soul patch

too.

Deadlychuck84 says

They will probably develop a secondary Quantum processor, which can be used

for specific processes of the computer which would benefit from more direct

computations.

They might also be used for security firewalls and such as well. It’d be

almost impossible (within any reasonable amount of time) to find a way

through a quantum firewall. If a firewall could be any theoretical

possibility, though when you attempt to examine it it would only show you

an aray which is actually only a % accurate of what the actually code is.

Đivector Kyané says

i think thats why these years, many motherboard’s companies, make they

motherboards with 2 cpu’s slots, so that way, you can hypotetically insert

1 common CPU + 1 quantumm QPU, maybe for desired tasks or games that became

optimized to use QPUs

Jeff Kesner says

Another completely wrong video on this channel. No where did he address

the assumption that electrons exist in more than paired super-positions.

Is it something about Australian universities? Haven’t met enough

burned-out quantum computing grad students from the US yet? ;)

Mike M says

How can you take advantage of the qubits containing more info? Every time

you measure you get one energy state, and lose info.