Classical computer: true, false Quantum computer: maybe

Wasn't expecting Loki to do an explanation about quantum computing

Really like how this professor teaches. He's very understandable.

I lost it at the when he started explaining about the coefficient part

it's amazing I don't even understand a single bit.

The comments section: 100% : I don't understand 100% : I understand .. And that's quantum computing

02:33 - the moment he realized the average viewer won't understand anything. And he was correct.

This video should be titled “Italian Metalhead Explains About Qubits”

Epic accent: Check Epic hair: check Epic soul patch: check This dude's got it down

That's the first time I've 'got' how quantum computers work. -'it's not the speed of the individual operations, it's the number of operations it takes to reach the result.' No magic. Andrea is a superb scientist. I love his explanations. Thank you!

almost 8 years since the video was made and i still think this is one of the best explanations i can find for my tiny brain to comprehend the basic definition of quantum computing.

For those wandering, why when you add up the coefficients in front of the possible states of the electron spin at 1:35 you don’t find one (which would mean he made an error in the probabilities) , it’s because these numbers are just coefficients, if you want to get the actual probability of getting an electron spin up/down, you have to square the coefficients: (0,80)^2 = 0,64 (0,60)^2 = 0,36 And when you sum up these numbers you get one.

Tha guy's accent, it's legendary.

Yes, but how does the computer *actually* work? How does it store a qubit? How does it entangle the qubits? How does it read the basis state? How is he algorithm strucured?

Finally, with this I can run task manager at 60 fps

Finally someone actually explained how they work! I’ve know for years about how, “it’s nothing like a classical computer, it can have bits in superposition” but no one told me how to read the qbits or how they interact.

I have what scientists call QI or Quantum Intelligence, which exists in two states, before you measure it, I am both Intelligent and not, but once you measure it, what you find is that I am not intelligent 99% of the time. By the way, I don't even understand this enough to make an appropriate metaphor, and this is the 1% trying it's hardest here.

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

I remember my physics professor at Georgia Tech was building a quantum computer back in the early 2000’s, but it was probably a 2^1 or 2*2 Qbits at that point, 😂. Smarter than I’ll ever be!

professor Morello is amazing he can explain this complex concepts so easily... the rockstar of Physics

i lost it at 0:00

When you accept to wear in a big red atom disguise, that's the moment when we know you're truely dedicated to you channel!

This is probably one of the most confusing topics but the professor handled it very well.

I would love to see another video from you on the advancements (if any) made in quantum computing !

Well that explains a lot, still don't know a thing

Andrea Morello is my new hero. Explains things so nicely!

It's amazing how well the professor explained it! High level overview, while also mentioning all the relevant stuff.

Love the clarity the prof has and the nice silliness of breaking it down to my level 😀

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

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.

This is the most amazing ~6-minute explanation of quantum computing principle that I had ever seen.

1:09 the sound of turning needle other way

Don't understand a thing but still watching.

0:40 *BING*

this is such a great well-rounded explanation, thank you!

Just loved that he did explain in the technical but understandable terms, and as a highschool physical chemist student, I understand all this very well. Also love the nutsell telling that it just won't be improving our classical computing like browsing web or stuff

this is the best explanation of qbits i've ever heard. thanks!

veritasium dressed as a phosphorus atom is my fetish

The video is a gem! The man at the end really caps it up good explaining the math bit

Andrea Morello is an amazing teacher! Thanks for that!

He talked me out of building one.

Why do I like veritasium dressed as phosphorus atom so much?

This is by far the best explanation i've seen to date on Quantum computing. BRAVO!

More please, this just seemed like a pre-roll introduction, with the good explained stuff to follow

but can it run crysis 3 at ultra?

Seriously... when this guy looks at the camera I'm sure he can read my mind.

This is the best explanation I have heard yet of how quantum computing actually works and what it is good for

This is one of the most clear explanations I have ever heard for info that is new to me.

I admire how accurately and gracefully Andrea dissipates all the myths built around quantum computers.

0:40 - "bing" that made my day.

I am watching thiss video today, after 10 years when this video was released, and this is way better than present videos on YT.

Amazing!! Thank you so much. It's a big help in figuring out what I'd really like to learn more about as I complete my degree (engineering physics).

0:40 Ping! 0:57 Ping!

i watched this three times, just enough to gain 3% of what he is explaining. Im taking what little i have learned and protecting my sanity.

Very interesting, educational and nicely done video! Great job :)

Professor of the year. Great at explaining things in a way I understand.

No computer is out of the realm of the blue screen of death!

that long heir guy looks like a head of Vampire club xD

Finally, a description of quantum computing that I can understand. Thank You!

great explanation , thank you , i needed to hear exactly that ; a short introduction to quantum physics may help but the title perfectly matches the content

i didnt understand anything, but was oddly compelled to keep watching...

That long haired guy is an example of a great communicator; I think it's very easy for similarly intelligent guys to spew tech talk that passes over many heads

Highly informative video. Thanks a lot for your efforts.

This is the best explaination so far i heard about Quantum Computers!

0:39 Ping

I was thinking: "Wait... is he italian?" Me controlling that he has an italian name: "Yes"

This was an excellent explanation and I've listened to a few.

My goodness, I am not sure if I understood it correctly, but this video was sooo educational! Thank you very much!

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.

so basically you need (n * precision)^2 normal bits to determine a single qbit. For example with regular 32 bits floating point variables you'll need 128 bits to determine 2 qbits.

He did a good of explaining it so that It could be understood. Very clear and informative. Thanks.

I love this man. This was an awesome explanation. Thank you.

its taken me almost 4 years to understand anything said in this video

Basically you won't be able to watch porn faster, but it'll solve your math homework in a blink of an eye.

It's amazing how they are using spin quantum nos and superposition principle to determine binary digits.

wow this is quite high production quality for an independent channel in 2013 this dude deserves his success lol

Its interesting that he says they can be both 0 and 1 at the same time. I'd venture to say that, they are not 0 and 1, at the same time. Instead, they are interchanging, just at such a rapid rate it is perceived as being at the same time.

He does a great job at explaining it. Picks his words with great care. Now I want to know which types of calculations would benefit from quantum computing.

I have more simpler analogous example for everyone to understand here. Mr X can understand 1 question from one of the 3 people throwing questions at him, at a time. So he will take 3 turns to understands all 3 ppl 1 by 1. But here we have the genius Mr . Y. He has the special ability to absorb all 3 questions at the same time. Why wait 1 by 1 when you could take all at once ?? !! Awesome isnt it?? Now 2 Mr X (2 bits) will understand 2 questions at a time. But 2 Mr Y (2 qubits) will understand 2^2^6=256 questions at a time !! Because they can superimpose their input ability in exponential!! Keep adding Mr. Y (the qubit) and you get the capability to absorb billions of times larger amounts of questions in 1 go. Freaking awesome !! Done. ------ Now talk about why they so large and ultra expensive?? Quantum computer basically lifts the limits of hardware construction. Current cpu design is such that it can only be some mm thick. But quantum computer breaks this limit and goes all way up in hardware, thus you se those huge quantum CPUs. More simple: Like intel or Amd cannot make faster cpu by increasing cpu size, it's counter productive and that cpu will not work. Like your brain cannot be the size of an elephant to make it more powerful, it will err and die. But quantum cpu can be made as bigger as you want and it's processing power will keep multiplying exponentially!!! Thus it breaks the limits of current microarchitecture and utilizes full hardware possibilities in all directions. But the problem of cost and power consumption will remain there...it will all depend how much semiconductor technology advance, allowing some smaller quantum computers still millions of times faster reach to the public. Will take some decades though. Until then, we will only see them installed in big tech firms.

Really want to see a current video about this topic

yeah but...can it run crysis?

So, basically, it's good for making huge combinations in a short time period, but not for transforming information, because the position of each electron has to be measured every time. So it's good for storing data and data analysis, as I understand. Think of a grid of electrons that can go up and down, instead of the classic bit, where the electrons have to go back and forth.

Frequency of looking vs. spin rate is key to superposing states. If you look three times per record, you can get 3 states: spin up, spin down or spin up & down. With a delay, you could rotate that 90° for 3 more states, for 6 states per 2+delay intervals.of 3 looks.

I didnt think it would be that hard to move a compass needle but his "ehh" just proved it was hard

One of the best explanation I ever heard!!!

Cool. I always thought Quantum Computers are the perfect thing to replace traditional silicon-based computers. Turns out I was wrong. Thanks a lot for the very helpful information!

KZfaq suddenly decided to recommend this cool video after 10 years 😅

Amazing working mechanism explanation of quantum computing.

Amazing job! Greatly appreciate all the work you do, I've never seen anyone who would be able to explain such a complex topic in just 6 minutes

How would you debug a quantum computer?

Correct me if I am wrong, but what I gathered here are two things. 1. Quantum computers are more like Quantum storage devices where they store 2^n bits in a space of n bits (thanks to super position) 1.a Also you don't want to read the values in those bits during a calculation. 2. You also need a specially tailored algorithm that can store the bits and perform certain sets of classical operations using a proxy quantum operation, like instead of adding a number 5 times, you are able to directly multiply with 5. 2.b Once the operation is done, you can measure the output and get the answer and the data is lost.

Very beautifully explained ! Thank You ! Really appreciate it !

This is the first time I actually understand the real difference between a Quantum computer vs a legacy one! Thank you heaps!

how in the hell did I manage to understand that?

That’s a clear, concise description of the state of the modern processor and potential for Q-bit processors. What I just heard should be explained to every marketing and computer chip manufacturing person who steps in front of people and attempts to explain modern processors and potential future processors.

Well, I never expected it to be like this. I got the idea of quantum computing (last year - 2020) even before I came across this vid. My basic concept was to make components smaller than what it is today. So small that it would use sub-atomic particles to process information, like some sort of hyper computer. Now I came to know that these computers actually exist and are "not" suitable for personal use.

I'm not even good at math, but I have somewhat of an understanding of how quantum computing works...and this guy is a very good teacher. His explanation was fairly clear for a layman like my self.

That guy is amazing(ly brilliant). He explains it well enough, despite the language barrier.

“The speed is not in the amount of operations that it can perform but just in the amount of operations it needs to get to the mathematical result”. He couldn’t have been explained better, this is awesome.

This guy does a really good explanation of explaining