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Quantum Computers Explained - Limits of Human Technology

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Where are the limits of human technology? And can we somehow avoid them? This is where quantum computers become very interesting.

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Quantum Computers Explained - Limits of Human Technology

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7 Dez 2015

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KOMMENTARE 19 070
Kurzgesagt – In a Nutshell
You want to learn more about science? Check out our sciency products on the kurzgesagt shop - all designed with love and produced with care. Getting something from the kurzgesagt shop is the best way to support us and to keep our videos free for everyone. ►► kgs.link/science (Worldwide Shipping Available)
McHarris
McHarris Vor 29 Tage
How likely are we to develop this technology to a functional level in the next 100 years, if ever??
 Sergent john Captain
No
MineNGneer
MineNGneer Vor 5 Monate
@Loturzel Restaurant mans made real quantum computer so it isnt jusr assumption
leandris_j
leandris_j Vor 5 Monate
NEVER buy anything from the Kurzgesagt shop site! You will not receive your item for MONTHS if at all and customer service is nonexistent.
Terrence Ozimek
Terrence Ozimek Vor 5 Monate
look
Soulplexis
Soulplexis Vor 2 years
i've learned everything and nothing at the same time - superknowledge.
Jenna Tamayo
Jenna Tamayo Vor 25 Tage
P O W E R
Bread Theif
Bread Theif Vor 28 Tage
@Emilhap nerd
【Happy Camper 快乐露营】
let’s hit 100k please? comment too underrated
GDRR
GDRR Vor Monat
I learned nothing but intertarment
Samantha🌿
Samantha🌿 Vor Monat
@yes yes True
Joachim LAVANDES
Even though I studied Quantum physic and also IT as a major, during my last years at university, this one is the hardest episode of all for me. And I cannot even have help from my parents, who are IT teachers. But I WILL understand it. Or not, at the same time.
NNapples
NNapples Vor 2 Tage
lol yeah pretty much
McHarris
McHarris Vor 19 Tage
Some things are left for the most ingenious of people. Rest on the shoulders of their genius and be the best you can be.
nich sulol
nich sulol Vor 2 Monate
@Richard Schofield sloot digital coding system
Richard Schofield
Richard Schofield Vor 4 Monate
I just woke up and watched this before getting out of bed. I think I picked the wrong video.
Mihai Veres
Mihai Veres Vor 7 Monate
I usually watch your videos to learn about new concepts and ideas in fields completely unrelated to what I do, so this is the first time I actually watched a topic on something related to my field of study and work (Computer Engineering). And it has been such a great experience to see how elegantly you guys approached some of the concepts I've been trying to explain family and friends many times (because the question "so what exactly do you do?" or "how do computers actually work?" naturally pop). This gave me a very unique perspective on how much "simplification" is actually done on the subject to fit in a video, and how accurately and brilliantly the essence of the topic is captured. I already had a great level of respect for all the hard work that's being put in these videos, but it just went to the next level. Thanks for all the awesome work in educating the world.
William Hu
William Hu Vor 2 Monate
"simplified but essence-capturing" is right!
2yellow4u
2yellow4u Vor 11 Monate
I remember when I first learned about binary computing and spent hours perfecting different logic gates with minecraft redstone, eventually making a computer that could add any two four bit numbers. Fun stuff to mess around with.
McHarris
McHarris Vor 29 Tage
@jmo137 I did that by buying a potato.
EndGamez
EndGamez Vor Monat
@roger van Bommel wdym
roger van Bommel
(PC = program counter, not personal computer)
roger van Bommel
@EndGamez kinda, just know your gates
RandomTV
RandomTV Vor Monat
@roger van Bommel I do that in my sleep 😴😴😴 Jk...
Roo
Roo Vor 9 Monate
ARM: “idk man probably” x86: “Yes!” Quantum computer: *“perhapsn’t”*
PurpleNova
PurpleNova Vor year
My brain is currently in a superposition of somewhat understanding this and being completely melted at the same time
McHarris
McHarris Vor 19 Tage
@mortsllaf Great reply.
lolliii
lolliii Vor Monat
aka me at school
FromWoodsToGaming
FromWoodsToGaming Vor 4 Monate
@mortsllafwhat am I thinking of?
Arun Kumar T S
Arun Kumar T S Vor 5 Monate
😂😂😂
ÄLPPHJDGÖKGDJPRN
ÄLPPHJDGÖKGDJPRN Vor 6 Monate
@suraj vardhan my hand is in a superposition to either dislike or dislike your reply
Najibullah Ghafori
Najibullah Ghafori Vor 4 Monate
being a computer science student, for me this video was in the superposition of being relevant, inspiring, encouraging and fun at the same time
Freestyle Therapy
Freestyle Therapy Vor 8 Monate
this is beyond amazing :o.... the impact is unmeasurable I'm happy to be alive at this time. Thank you Kurzgesagt I felt this video like someone telling the good news!
Dathedr
Dathedr Vor 9 Monate
My professor in Computer architecture is doing research on quantum computers, and he said to us today that Google and IBM promise more than they actually know. He believes that it will take several decades to be able to use them really well and even then not in the sense of a private computer, but rather in large projects.
fiftythree
fiftythree Vor 7 Monate
Hmm, well, while it's definitely true that we're definitely still a few decades away from being able to do something like Schor's algorithm, I feel that's a bit cyncial. They've definitely made some absolutely remarkable progress. The current best is 127 "qubits". Those qubits are too unstable to even as much as all connect with each other with CNOT gates so that's in practice 0 qubits *but* ; it's definitely a lot further than I would have believed possible within a decade, 5 years ago. Suddenly; to me, the magical ~1000 qubits we'd need to have an *actual, useable, stable* 1-bit quantum computer, seems like it's within reach. And to me, that's absolutely astounding.
Umberto Rodrigez
Umberto Rodrigez Vor 5 Monate
I really like your depictions of the steps to build a full adder. Very well done. I had always wondered why no one ever depicts a full subtracter though, and then i built one today. I now understand.
Disconnect Google+
Disconnect Google+ Vor 6 years
My computer has the power of trillions of primary school students being forced to perform maths.
Disconnect Google+
@CharismaticGamer Why don't you have a seat over here. .
CharismaticGamer
CharismaticGamer Vor 2 Tage
All on the palm of my hands
S GR
S GR Vor 8 Tage
Yes, and i like the idea
Overdrive
Overdrive Vor 8 Monate
@Devon Hernandez teacher logic in a nutshell
Overdrive
Overdrive Vor 8 Monate
lol
EpreTroll
EpreTroll Vor 7 Monate
Just like the hyperloop this entire idea is based just on eliminating 1 factor. Oh but imagine if there was more than a 0 and 1. Imagine there is no air resistance
Alex
Alex Vor 2 Monate
You're just really wrong, quantum computers have a lot of actual studies. The Hyperloop is a project by some billionaire that wants brownie points
Celebriedad
Celebriedad Vor 2 Monate
TF are you talking about brother.
William Hu
William Hu Vor 2 Monate
excuse me, what?
nikon_playz
nikon_playz Vor 6 Monate
My brain understood nothing
cumeo89
cumeo89 Vor 9 Monate
I still have a hard time believing that quantum computing would ever work. Representing lots of states at once sounds good but im reality you're bound to run into precision problems. The good thing about traditional computer is that they have built in room for errors so, if the electrical current is a bit too high or too low, it is still rounded into 0 or 1, or a fault is detected. How can you detect an error in a superposition if 2^50 states?
Oς_
Oς_ Vor Monat
@fiftythree wow that was really informative, thanks!
Ivan challenging videos Lam
@fiftythree damn ur smart
fiftythree
fiftythree Vor 7 Monate
Quantum computing don't really hold more information than regular computers; it's a bit unfortunate that Kurzgesagt propagates that myth. It's better to think of Quantum computers as an evolution of a Probabilistic computer, which is something we have plenty available in the classical setting; think, with some randomnizer, have input of 0 with probability A, and 1 with probability 1-A. The set of "superpositions" ends up being just the set of different combinations of probabilities - this ends up being large, in fact, infinitely large, since A is a real number! And further, looking at several bits, the number of possibilities grows exponentially. But that isn't a problem. You did still accidentally bring up a good point though; current technology gives us very large errors on basic computations for quantum computers, which is a problem, since errors accumulate exponentially. However, this is something the very active research field of "Quantum Error Correction" hopes to solve; essentially, our objective is to have a set of "self-correcitng qubits", each consisting of their own set of qubits. The self-correcting qubits are able to reduce the error probabilities to something manageable. However, with our current best algorithms and current best tech to implement quantum computers, we'd need ~1000 regular qubits to construct even a single self-correcting qubit! IBM has recently produced a 127 (normal) qubit computer. They are aiming for 1000 normal qubits by 2025 (so is Google); once that barrier has been breached, we will have our first real, useable quantum computers, that don'T immediately collapse due to rappidly accumulating errors.
Google user
Google user Vor 8 Monate
exactly! i havent found a single video yet on youtube that can explain the topic and implementations in an understandable way.
AlexGaming
AlexGaming Vor 9 Monate
The story of a wise computer i met 20 years ago: Normal computer: The answer is Yes Other normal computer: The answer is No Quantum Computer: It’s all about perspective
datagod
datagod Vor 10 Monate
Excellent video. I hope you make an expanded version of this one, with a slightly slower temp. So much info to take in.
Vicelion
Vicelion Vor 2 years
"Right now, we don't know if quantum computers will be just a specialized tool, or a big revolution for humanity" Its quantum, it's gonna be both things at once.
Projekt Taku
Projekt Taku Vor 2 Monate
@Christian Dauz yeah, and we could do so much without having to worry about energy or waste.
Christian Dauz
Christian Dauz Vor 2 Monate
@Projekt Taku Air transportation and much faster Trains would be a thing
Projekt Taku
Projekt Taku Vor 2 Monate
@Christian Dauz imagine how different the world would be if we developed usable, viable fusion reactors in the 1910s! Energy would never be an issue again.
lolliii
lolliii Vor 3 Monate
Quantium computer is existed/exists/will exist. -One of my old pal.
Iola Nute
Iola Nute Vor 3 Monate
Superposition quantum computer
Surabee
Surabee Vor Monat
I enjoyed this so much. I am also proud that I understood a major fraction of the entire video:D
Lag, Harbinger of Lost Connection
So a Quantum computer is just like a house full of Schrödinger's Cats
Northern Mist
Northern Mist Vor 6 Monate
@lubomir kubas 😂
Garrett Wilson
Garrett Wilson Vor 6 Monate
Kind of, it’d be a pretty plausible amount as well right now probably close to 100 cats in a box with an explosive device
lubomir kubas
lubomir kubas Vor 8 Monate
@DON'T CLICK THIS VIDEO ok i won't
lubomir kubas
lubomir kubas Vor 8 Monate
except*
lubomir kubas
lubomir kubas Vor 8 Monate
exept they are atom sized
OrbitL
OrbitL Vor 11 Monate
I dont know why but i find it actually hilarious the thought of electrons just quantum tunneling around our tiny computers
Jon Moore
Jon Moore Vor 10 Monate
I feel like we are growing ever closer to a field of experts skilled in breakfast math.
SimplySarc
SimplySarc Vor 6 years
How on earth are these transistors the size of atoms even made? How could you make so many small things that need to follow logic?
i
i Vor 9 Monate
A transistor only have 2 state : on (have electricity, or electron flow through it), or off (do not have electron flow through it). The flow of the electricity on transistor could be controlled, flip on and off by a small current on its base. So, only a few atoms and a lot of accuracy could be enough for a transitor.
44R0Ndin
44R0Ndin Vor year
@Ignacio Benavides Eventually you have to switch to higher frequency lasers because you can only focus a beam of light down so far before diffraction takes over and makes it unfocused again even if your optics are focusing it to a smaller point. I forget exactly what causes the diffraction, but I know that a higher frequency beam of light can be focused to a smaller point because it's not as effected by diffraction. Right now they're working with pretty "hard" (aka high frequency) UV light. They could switch to X rays I suppose, but we have problems making lenses that work at that light frequency. And that's why it's so hard to make a single atom transistor (of course the name "single atom tranistor" is a bit of a lie anyways, it's not just "one atom is magically a transistor", there's a bunch of other atoms around it to form the gates and stuff.
Ozzni
Ozzni Vor year
Human brain magic
Corpsefoot
Corpsefoot Vor year
@Frank Schneider That sounds less like the system is infinitely complex, and more like human beings are just having their old dumb assumptions disproved. The same way the historical discovery of chimpanzees using sticks wasn’t some crazy breakthrough for chimpanzees, it was just an embarrassing reminder for human beings to not assume stupid shit
Caleb Godday
Caleb Godday Vor 6 Monate
I must confess this is the only video that explains quantum computing in an easy way to understand it's inner workings thumbs up
Firestorm 253
Firestorm 253 Vor 4 Monate
Have you ever thought about the impact on machine learning where you can try every possible weight combination in a short amount of time and therefore get an PERFECT Function Approximation. This would lead to perfect neural networks who never make a simple mistake and can learn from a ton of data within a millisecond to get the global minima. That would lead to an extreme AI revolution!
Iris Iridium
Iris Iridium Vor 8 Monate
I love that the limits of our technology is analogized by a transporter. Its like the only thing we have left to figure out from the star treks.
John Scheferkort
John Scheferkort Vor 6 Monate
Considering that this video came out 6 years ago, Imagine how many private think tanks have had access to this technology for the past 10 years. In combination with advanced AI, what on Earth could happen if it ends up being used to control us instead of free us... AI + Quantum Computing = Machines that are 1 million times smarter and faster than us. Imagine having AI robotics that are connected to the same cloud service that could be remotely manipulated altogether. Scientist usually don't have a say in the final product when projects are privately funded. They usually work in compartmentalized departments and have no control over the overall projects like at GE and IBM. The battle of virtuous win-win Quantum AI vs. global domination Quantum. AI would come into play. I can only hope these intelligently designed machines do not fall from grace. Is it possible that they behind wiser than mankind who barely even knows His own Intelligent Designer?
Abdul walli
Abdul walli Vor 3 years
My IQ while watching the video is increasing and decreasing at the same time so my IQ is in a superpositioned state
Samantha🌿
Samantha🌿 Vor Monat
Lol
O Kn
O Kn Vor 8 Monate
the only direction your IQ can change is getting smaller, for example from car accidents, cause it isn't how much you know (your intelligence) its the quotient of that (intelligence quotient)
Maggie De Block
Maggie De Block Vor 8 Monate
Hahahaha amazing comment
benjie cresencio
benjie cresencio Vor 8 Monate
@Spoopy Doopey TRUE
bibr_0
bibr_0 Vor 9 Monate
69th repli
Journel Laya
Journel Laya Vor Tag
Atomic scale really has the infinite quality of quantum tunneling. Only data can works to function the whole of the ecpected funtion or operation but quantum is not necessary micro or nanoscale . 😊😊
THE MUTANT DOC
THE MUTANT DOC Vor 8 Monate
This genuinely has worried me for years. There will be a time in our near future that we will have the fastest non quantum computers. I'm sure engineers can curve off some of Moores's law, but the end result is inevitable. What worries me is that I don't think we will solve the huge issues quantum computers have in time. Will this be the next big economic crash? We have to wait and see I suppose
Chris Taylor
Chris Taylor Vor 8 Monate
I think that is a fair concern. However, since progress is exponential, even though we may not have many steps left we have a lot of computing power to go. And if computing power is at a point in which it is totally efficient than in terms of an economics standpoint, that is actually a good thing. And in terms of consumer goods I believe that marketing is perhaps more important than the actual computing power so I doubt there will be a large decline in sales. However you are right in the fact that we simply don’t know and the only way to know is to wait.
Thanh Băng
Thanh Băng Vor 8 Monate
Quantum Mechanics is such a interesting field in my opinion. I've learned it since i was 13. I can't wait to see its popularity in the future, like a differently new world??
jojolafrite90
jojolafrite90 Vor 11 Monate
This was actually a very good and understandable presentation. Thanks.
bananaflavoredmilk
Computer : yes, no Quantum computer: *PERHAPS*
Donkey Kong
Donkey Kong Vor 9 Monate
✝️✝️
Donkey Kong
Donkey Kong Vor 9 Monate
✝️✝️
chirone
chirone Vor 11 Monate
Computer: To be or not to be... Quantum computer: *T O N O T T O B E*
Barrie Wright
Barrie Wright Vor 4 Monate
Brilliant, thank you for the explaination for a simple man .
Zachary Daiquiri
Zachary Daiquiri Vor 8 Monate
I'm so glad there are smart people interested in solving this problem.
Onio Saiyan
Onio Saiyan Vor 11 Monate
Computer scientist: let's work on getting single atom transistors. Computer engineer: ok. Six years later Computer scientist: how are you playing Doom? There's no computer! Computer engineer: tiny atom computer is tiny.
Holden H
Holden H Vor 9 Monate
This uneasy feeling of learning something but not, is how I feel after every quantum mechanics class I have
Yewo Humphrey Mhango
4:31 🤧I struggled to even understand how normal transistors and logic gates wire up to manipulate information. This Quantum stuff sounds really mind-bending indeed
Ziggy Zoggin
Ziggy Zoggin Vor 10 Monate
tip to whoever coded the simulation: when doing a physics update, you can do a ray cast from a moving object, then detect if it hit anything and act accordingly. this is helpful for detecting if an electron hit an atom thick wall.
Ziggy Zoggin
Ziggy Zoggin Vor 9 Monate
@Ra ???
Ra
Ra Vor 9 Monate
go white boy
Captain Rev
Captain Rev Vor 11 Monate
Red guy: "Hey bud what's up" Blue guy: "how familiar are you with the gears of war exactly" Red guy: "What" Blue guy: morphs into a horror monster
Donkey Kong
Donkey Kong Vor 9 Monate
✝️✝️✝️✝️
Ff Cc
Ff Cc Vor 9 Monate
@DON'T CLICK THIS VIDEO ok
Truls Gunnuldsen
Truls Gunnuldsen Vor 9 Monate
@Stample thats what i thought too
Stample
Stample Vor 9 Monate
@Tathnous Oxide lol, except for the blue guy turning into a melting blue chocolate demon
Tathnous Oxide
Tathnous Oxide Vor 9 Monate
@Stample The blue guy turning into a monster? i dont think so ;D
Dave Bremner
Dave Bremner Vor 9 Monate
That was the best explanation of quantum computing I've come across I'd heard all the information before but I'd never really understood it so yay for my brain.
Hisoka Morrow
Hisoka Morrow Vor year
Normal computer: Yes Other normal computers: No Quantum Computers: Yesn’t
Miguel Baltazar
Miguel Baltazar Vor 9 Monate
the floor is made of flooceleing (floor and ceiling)
Joe Mama The Commenter
Yes'nt Nes
Fry
Fry Vor 9 Monate
"Yo"
mar
mar Vor 10 Monate
More like Normal conputer: Yes Other normal computers: No Quantum computer: aktjqksjzlk
Lasty Hopper
Lasty Hopper Vor 10 Monate
Quantum COmputers: Our current probability of yes is currently 50/100, therefore, the answer would be "yesn't"
typecomment43
typecomment43 Vor 9 Monate
What if we used a quantum computer to design the fastest conventional computer?
Eric Lopez
Eric Lopez Vor 3 Tage
For those wondering what you need to know to deeper understand this, you need Calculus, Electromagnetic Physics, and Digital Logic. Have fun learnin’ that on your own lol.
Ravi Makwana
Ravi Makwana Vor year
I'm software engineer. and understand how 0 and 1 works. and this video is mind-blowing... Awesome. hope we're not use this in AI....
Stephen Faulk
Stephen Faulk Vor 3 Monate
love your stuff guys/gals! keep up the hard work!
Rudraksh Parsai
"They won't replace our regular computers" *Can't wait to come back here in 15 years and see kids commenting "Ha! I'm watching on my XC-G7 quantum computer"*
Samuel Skala
Samuel Skala Vor 11 Tage
You don't need a supercooled block of atomic rearrangement to get the output of a youtube link, and its much cheaper to just use the current stuff
Jenna Tamayo
Jenna Tamayo Vor 17 Tage
@GHR989_YT model 2033 or model renew 2038?
GHR989_YT
GHR989_YT Vor 17 Tage
Ha! I'm watching on my XC-G7 100 RTX 10505 Quad Super Quantum Computer *How expensive would that be?*
Firek
Firek Vor 20 Tage
When they are invented, ima make a model with that name for the sole reason som1 will comment that…
Jenna Tamayo
Jenna Tamayo Vor 24 Tage
@Good yes
that one guy
that one guy Vor 6 Monate
we're a long way from this happening. for example, your computer screen can only run at a limited speed which is most of the time is capable of 60hz, or 144hz. If you're a gamer you know what happens if your computer tries to run faster than this limit, most of the time it's lighting issues, or jittering. sure you could slow it down, and the game would no longer have those issues, but even with that you would need everything to be quantum compatible cpu, ram, gpu, motherboard. It would require all of those to have quantum physics or none of them would be able to keep up with one another like how ram loads temporary processes, like a tab of google, or rendering in a game, the cpu takes in that information, and sends actions to different parts of the computer, like to the gpu to display the action on screen, or the audio jack to play the sound that just happened in the game on the speaker, I could stretch this further but I've already done too much of that.
Ryan
Ryan Vor year
man, if we can actually learn how to treat each other well and not give everything to a few people who can't even use it, we are going to be awesome!
Sandigocita
Sandigocita Vor 9 Monate
1:53, for people who didn't know, that was actually the worlds smallest movie ever made. (not duration, its size)
Divyansh Sharma
Divyansh Sharma Vor 9 Monate
By IBM
Adithi Bhat
Adithi Bhat Vor Monat
Thank you soooooo much. It's been weeks and this video just made everything crystal clear....
Soham / Akatsuki
Soham / Akatsuki Vor 2 years
Normal computer: Yes. Other normal computer: No Quantum computer: Well Yes, but actually No
Heidi CHRIST
Heidi CHRIST Vor year
No but actually yes
ItzXavian
ItzXavian Vor year
More like "Yes, but also no"
Ezsk
Ezsk Vor year
It's same as usual Kurzgesagt.
Alan Mira Anime
Yesn't but Non't
Kuba Grotowski
Non't
John Connell
John Connell Vor 9 Monate
I had such high hopes that you guys would be able to explain quantum computing at a level I would understand. Oh well.......😐
LeafTreez
LeafTreez Vor 3 Monate
I took a logic class in college where we translated verbal sentences into math equations. I thought it was kind of usueless infomation until learning about transistors. I still don't understand quantum computing, but I probably would've understood less without that class
ToonLink 1672
ToonLink 1672 Vor year
It just blows my mind how we are able to physically manufacture things tinier than a cell.
Stefan Al Wombat
Stefan Al Wombat Vor 7 Monate
I‘m now closer to being a quantum super computer than I never was.
ThatOtherAndrew
ThatOtherAndrew Vor 2 years
*"I used the quantum physics to simulate the quantum physics."*
d2d2 d2d2
d2d2 d2d2 Vor 6 Monate
just wait for yourself ; )
Donkey Kong
Donkey Kong Vor 9 Monate
✝️✝️✝️✝️
Neo2266
Neo2266 Vor year
*Hey dawg, I heard you like quantum physics*
Aryan Gupta
Aryan Gupta Vor year
r/unexpectedthanos
Hiep Nguyen
Hiep Nguyen Vor year
@ThatOtherAndrew it's a reference to thanos' line in avengers endgame
X X
X X Vor 8 Monate
Other computers: yes, no Quantum computers: it might be
Axel Ljungqvist
Axel Ljungqvist Vor 9 Monate
If its possible to connect two quantum particles to be the same value on the other side of the world - Wouldnt that make 0ms internet delay to the other side of the world? Or does it take time? Could that be a new amazing alternative to radio frequency in drones and car keys etc?
Andreas Kvisler
Andreas Kvisler Vor 9 Monate
no, just different values. If a tangeled particle has - the other needs to be +
CRYPT0 Tr0LLCHAIN
CRYPT0 Tr0LLCHAIN Vor 9 Monate
very easy to understand! now I have knowledge about quantum computing
zacthecrac
zacthecrac Vor 8 Monate
its sort of scary that we might be at the peek of where technoloy can take us and this world is what we've done with all of it ...
Bruh
Bruh Vor year
Me: *Observes quantum computers so they stop working*
Sovi
Sovi Vor 6 Monate
@Bro cheet an atom is in a superposition of all of it's states, but if you measure it, it wavefunction collapses. for example, let's take shrodinger's cat, the cat is both in it's dead state and alive state, but if you look at it, it takes only one state, either it's dead state, or alive state.
Fried Egg
Fried Egg Vor year
@Quantum man the Photonic Mastermind! its not actually us looking at it, but to observe somethign you have to hit it with photons, or some other material, so to observe a quantum particle you basically have to slap it
kirbydied
kirbydied Vor year
@Giovanni César Amorim 9A #DigaNãoAKokiDeus it's simply a fictional expirement to demonstrate a specific situation where superposition is best represented. You're over here analyzing every little detail as if it is a real life experiement. Of course the car won't be dead and alive at the same time but thinking in quantum computing, that could would be alive and dead. That's why quantum computing or the idea of it doesn't work on normal classical computers and circuits. It's very fascinating how weird quantum computing is because a lot of it is based on the weird nature quantum has which leads to a lot of questions that we don't know. I'm not an expert on this so I don't know everything, but there are defending people more qualified that can answer and explain this in more depth if you search it up. But even so, those experts still can't answer some questions about some of the more in depth qualities of quantum. I took a class and some of the questions asked, the teachers did not know because no one has discovered the answers. Sorry about the rant, lol just got really excited about this.
Giovanni César Amorim 9A #DigaNãoAKokiDeus
@kirbydied Schrodinger's cat is, to be honest, a really dumb experiment, the cat won't be both dead and alive, it's either dead or alive, the only thing that in between those things is our doubt, not the actual thing. Also, the cat will be dead because the radioactive material will most likely release particles, killing the cat.
Rest in peace
Rest in peace Vor year
@Bro cheet To really observe them you need complicated equipment, that will mess with them anyway, so you can observe them indirectly, by checking output of the device. It's not like brains are magic, though, such device should collapse quantum probabilities on it's own, without human observer, which makes Schrödinger's thought experiment dubious, actually.
Giin
Giin Vor 7 Monate
Well, since most games I can think of are forms of simulation, and quantum computers excel in simulation, I suspect that the tech might just go consumer one day.
EnderKing_13
EnderKing_13 Vor 7 Monate
These are around our first quantum computers. Remember the fact the first electronic computer was massive and could barely run something like 100 times 50. Now look at what it’s become now. If that happens to quantum computers, and it becomes a average thing that all computers use, lag will never be thought of. And if there is a way found for them to be mass produced, they wouldn’t be rare so they wouldn’t be expensive. For around 300 dollars, you would be able to get something that is cable of holding master programing. Then, the world would become easier and easier, more and more is discovered. Since now nearly everyone has a computer that can load anything instantly, a lot of things will arise that haven’t been seen before since not everyone today can share their knowledge.
BMO
BMO Vor year
ngl. this is actually the most I can sorta understand from "Quantum Computing". other videos still left me hanging too much. thanks so much!
Isaac Marks
Isaac Marks Vor 8 Monate
Perhaps you can give the other videos a chance again after getting a better grasp of the concept. So maybe you can understand a little better now that you have built a bit of a foundation. If you can find any videos of Richard Feynman explaining it, I would choose that one. He was a genius, and great at explaining difficult concepts. Also, Carl Sagan would be a good choice if he has a video where he speaks about it, but I can't guarantee that he has
Maurya Wadhwa
Maurya Wadhwa Vor 10 Monate
The fact that I'm studying all the topics they initially talked about and I could understood all the symbols made me smile ear to ear
Samantha🌿
Samantha🌿 Vor Monat
Good for you! I will go back here once I understand all about Quantum physics
RogelioAyus
RogelioAyus Vor year
What I learn so far: -people will make better computers What I don’t understand: -everything else
funmac 2
funmac 2 Vor 7 Monate
same
Loturzel Restaurant
@Mansoor Mughal How about you stop embarassing yourself by ignoring someone saying you misunderstood their comment. I should know better than you what my comment was about, yeah? Fair?
Loturzel Restaurant
@Mansoor Mughal No, you missed the point and your comment is not even to be considered an answer.
Loturzel Restaurant
@Mansoor Mughal Youre arguing with me over something i never denied in any way, shape or form. Please re-read my comment.
Robin Wilson
Robin Wilson Vor year
Hahaha😂
omkar upadhyay
omkar upadhyay Vor 9 Monate
I didn't knew that this video can also clear most of my concept about semiconductors...and quantum physics
wagwan 9a
wagwan 9a Vor 10 Monate
you know its a hard subject when even kurzegesagt cant explain it easily
Bryan Turnbow
Bryan Turnbow Vor year
If you change the spin on one entangled particle does it change the spin of its entangled partner instantly regardless of distance between the two?
farid game
farid game Vor Monat
WOW, Thank you, a brilliant explanation
Tuxedo Productions
Tuxedo Productions Vor 2 years
Since this video has been released, transistors have decreased in size furthermore. An iPhone XS or later has a transistor size of 7 nm, which was pretty revolutionary since it was one of the only devices to be mass-produced with such an architecture. In the past year, however, 7 nm transistors are becoming more prevalent in PCs. In 2019, 5 nm technology has become commercialized, though not on a massive scale. Even now, Samsung has announced they plan to commercialize 3 nm technology. The important thing to note here is that we design these transistors often decades before they become commercial. For example, 10 nm technology was first designed in the 1980s before being created in 2002 and commercialized in 2016. Currently, the smallest transistor created is at 2.3 nm, which may signal that we are at an end for transistors, considering how the disparity between the size of created transistors and the size of commercialized transistors has diminished greatly. Currently, some major nanotech research firms have considered 14-angstrom transistors (14Å, one angstrom is 10^-10 meters, 1 ten-billionth), which is about half the width of a DNA helix, by around 2025. However, whether or not we will be able to actually realize this is up for debate for the reasons mentioned in this video.
PingWine
PingWine Vor 2 years
SensualCream Agree with you 100%
SensualCream
SensualCream Vor 2 years
@Tuxedo Productions Dude thanks for this. It's so frustrating seeing everyone just type a bunch of bullshit in the comments. I get Kurzgesagt tries to aim for the lowest common denominator and there are better channels for scientific discussion but it's still disappointing nonetheless. The fact you have two douchebags here saying "too long" and "I couldn't read all this" is awful. I can somewhat wrap my head around the concepts in this video but I _completely_ fail to understand why the fuck someone would fail to read something, then spend the time and energy expressing that they didn't read it. TL;DR You're awesome and thanks for having something to teach us (which should be why we're all here). If anyone's interested, one of the concepts being discussed in the video and in your comment is called Moore's Law.
Tuxedo Productions
Tuxedo Productions Vor 2 years
@Josh Yes
Josh
Josh Vor 2 years
Is 14 angstrom equivalent to 1.4nm?
Pro at Stuff
Pro at Stuff Vor 2 years
Sorry I couldn’t read all I this
Youssef Mohamed
Youssef Mohamed Vor 11 Monate
a tiny correction, the 14 nm is the gate feature length, therefore technically a transistor is quite bigger than 14 nm, but 14 nm is the smallest distance in the gate (between two nodes, I am note sure which two nodes), anyway this is a huge difference, since an atom size feature node, won't mean that the entire transistor is atom sized, but rather the smallest configurable part is atom sized (which mean your resolution is [close to] atom by atom, which is freaking cool ! (and is fundamentally different than the entire transistor being atom sized (basically three atoms (or four) may form a transistor but not a single atom, absolutely not (unless we discover a new king of atoms! (that is a new element, I think we would call Tn on the periodic table)
Arindam Karmakar
Arindam Karmakar Vor 10 Monate
"You can imagine a computer as a group of 7-year-old, answering really basic math questions.", that sums it up!
Igor Astral
Igor Astral Vor 2 Monate
7/06/22 Still watching and re-learning everything from your majestic work!
rHydro
rHydro Vor year
Could you do a video on how time travel is or is not possible via quantum physics
João Victor
João Victor Vor 3 years
Was I the only one surprised by the size of the transitor?
Samrat Adhikari
Samrat Adhikari Vor 2 years
Por favour??
João Leote
João Leote Vor 2 years
How did they even built that
Antagonist
Antagonist Vor 2 years
How did they build that
keppy
keppy Vor 2 years
@Nedim Kahrimanović AMD's new CPU's as well
Marko
Marko Vor 2 years
It's not 7nm it's "7nm", it's the name of the new process, the number was an actual size in the early days but now it doesn't point to any size in a transistor
Symplytra Ac
Symplytra Ac Vor 8 Monate
To be honest, I learned more from this channel, than from school
Caleb Godday
Caleb Godday Vor 6 Monate
Thanks alot I understood perfectly job well done
potatosordfighter666
This made me understand them less. How can you have multiple superpositions if superposition is every possible position at once? How can you re-measure a qubit? If you measure it it changes and if you measure it again would it not change again? How can you ever know if a qubit is read properly if it potentially collapses into any of all its possible states?
Do You Know Da Wae
Do You Know Da Wae Vor 8 Monate
it remains in the same state after you measure it initially - re-measuring won't change it.
Avi Grunewald
Avi Grunewald Vor 2 Monate
"How familiar are you with the gear wars" oh my god I love kurzgesagt
Ifeoluwa Adeoye
Ifeoluwa Adeoye Vor 2 years
Observer: so, Qubit, what would you like to be: 0 or 1? Qubit: Yes
Donkey Kong
Donkey Kong Vor 9 Monate
✝️
Axy
Axy Vor 10 Monate
It simply makes the quantum bits become both the values and with one quantum bit you can already store the information of 2 normal bits. But if you have more than one qubit, you can actually say 2 qubits can store the information of 4 normal bits. With 8 qubits you can already store 256 normal bits complex information. This is really a game changer.
Peter Parker
Peter Parker Vor 11 Monate
Q bert and the triangle of squares
Luna Koala
Luna Koala Vor 11 Monate
Actually no. This misses the whole point of collapsing Superposition when observed. More like: Qubit: I'm 0 and 1 at the same time! Observer: What's your state? Qubit: *rolls dice*
xen photon
xen photon Vor year
Qubit: both please. Wait.... You decide!
Orisphera
Orisphera Vor 11 Monate
3:21 If I understand it correctly, according to the many-worlds interpretation of quantum mechanics, the qubit remains in superposition, but you become entangled with it. I don't understand the Copenhagen interpretation because I can't imagine true randomness without many worlds
Wise One
Wise One Vor Monat
I love when learning is fun.
Tomerick
Tomerick Vor 2 Monate
As someone who is currently learning MIPS this blows my mind!
DireWolf
DireWolf Vor 7 Monate
Learned my entire electronics course in less than 7 mins.😅
Uzma Asif
Uzma Asif Vor 3 Monate
I just realized that how big the universe can be and how small it can be
DrewofDonuts
DrewofDonuts Vor 8 Monate
I can't wait to understand after the next 20 or 30 rewatches!
Cassidy Brash
Cassidy Brash Vor year
6:23 "Why not simulate quantum physics with actual quantum physics." Me, the universe observing itself: "Oh, neat!"
blisterbeetle01
blisterbeetle01 Vor 11 Monate
I loved how you paired the vid with 8 bit game music! Makes it feel right in a kind of backwards way
Marcus Hooper
Marcus Hooper Vor 4 years
This is by far the best explanation of quantum computing I have seen. I just watched the IBM "5 levels of difficulty" which is interesting but doesn't even begin to provide the information that is contained in this video. Great job - please produce more of these for different subjects!
Pixelated Warrior
Pixelated Warrior Vor 3 years
I just came from the same place wanting to know more lol
Isaac
Isaac Vor 3 Monate
What i want is a 60's sized supercomputer, with all the cramming of modern ones. *LETS SEE WHAT IT COULD DO*
Hugo Alvord
Hugo Alvord Vor 2 Monate
Seeing how the qubits come together and output another superposition is giving me linear algebra flashbacks lol, it was so interesting but omg so hard to do right! I dont know that we humans can be trusted with this power though....
Adam Aenosh
Adam Aenosh Vor 11 Monate
Do we even remotely have the ability to make a quantum logic gate though?
CloakX3
CloakX3 Vor 11 Monate
Watching this in 2021, and I'm so giddy with how far they've come.
Hello Mine
Hello Mine Vor 10 Monate
@DON'T CLICK THIS VIDEO no
DON'T CLICK THIS VIDEO
WOWW YOU DON'T READ MY PROFILE PICTURE ..
Hello Mine
Hello Mine Vor 11 Monate
me too
Exotic
Exotic Vor year
"A typical scale for transistor is 14nm" *laughs in 7nm*
HiFuncAutismBoi
HiFuncAutismBoi Vor 25 Tage
@Zeptom laughs in TSMC 1nm experimental chip
 Muhammad Uwais Muhsin Muaz
@Desangrador *14nm
MinecraftMilkCraft
MinecraftMilkCraft Vor 7 Monate
@Mujeeb Ahmed cries in 100k light years
PCproffesorx
PCproffesorx Vor 7 Monate
@Slendy_C Not that intel hasnt fallen behind a bit , because they have, but TSMC and Samsung just started arbitrarily naming things 7 nm , 3 nm , 2nm etc when it has no relation to a standard or a gate size, density or reality. It is now simply a marketing term. Intel has caught onto this and started doing something similar in the past year. It is renaming its 10 nm process intel 7 as its 10nm process has the same transistor density as what tsmc was calling "7nm". I wish the nm naming still meant something, but it really isnt anything more than a marketing term at this point.
dragonfand
dragonfand Vor 8 Monate
Wow 14 nm. In just 6 years we're down to Apple using 5 nm, and others like AMD using 7 nm. There are even plans for TSMC to introduce 3 nm soon. That is crazy.
Sebastian Webber
Sebastian Webber Vor 10 Monate
Today they are working in creating processsors with 3nm and AFAIK the latest and smallest comercial cpu is the apple m1. M1 uses a 5nm architecture. I loved this video!
dawnE27
dawnE27 Vor 11 Monate
Is it pathetic that I’m only here as a game developer trying to discover when we’ll be able to run perfectly true-to-life physics simulations in VR? 😅
And-Nonymous
And-Nonymous Vor 11 Monate
@JB No
JB
JB Vor 11 Monate
You think it can run Crysis?
rocky511
rocky511 Vor year
Just got back from watching about 70 videos on transistors... What did I miss? 😃
Kenmore Chalfant
Kenmore Chalfant Vor 6 years
I've heard people try to explain quantum computing many times and the one part that I still can't get my head around is: if superposition goes out the window the moment you measure a qubit then how is it useful? Wouldn't looking at the answer potentially change the answer? How can that be accurate for anything? If once you read a qubit it always end up as a 1 or 0, how does it differ from a classical bit?
Johnny
Johnny Vor 5 years
I think people mistake when they say, "you only have to measure one qubit" what is really happening, is that you measure one qubit which then tells you the position of its entangled partner. You also check the entangled partner to see if its a match. Which then starts drawing out the positions multiple entangled particles. It's actually really similar to how a flux capacitor works. Seeing as how its primary functioning principle is quantum physics.
IroAppe
IroAppe Vor 5 years
@blindedinchains829 Not all of that is true. You beginn by developing a function where you know the answer for and if that answer comes out, the thing works right. But after that, you can feed it with many values you want and it will compute the outcome in the same way. There is nothing "magically" that happens, but today we use those calculators all time to compute results that we want them to compute for us, instead of calculating by hand. So we know, the function does it right, but we do not always have to know the result. Only when the function is developed it is used to test its functionality and to develop its structure (if you take for example the basic full adder circuit etc.) or algorithm, if you take a program as example. I am quite in "traditional" IT. I have learnt it, from the basic logic gates on. I know how it only does predefined steps put in there. But that we know every result, is wrong, if that really was what you meant to say. We know how it does it, but we do not have to know the result after we have the certainty that it does what it should. Then we use those already predefined steps to compute new values that for example show us something new about our universe.
Big Stick
Big Stick Vor 5 years
Also, some people seem confused by the function of ANY computer. A computer is not something you use to compute a previously undiscovered answer to something. All computers, modern and quantum, are designed to store information, and perform functions that are programmed into it by people who already KNOW the answers to these things. Quantum computers are solely an advancement to increase processing speed. Not to make decisions, unless those decisions are pre-programmed in by a human.
IroAppe
IroAppe Vor 5 years
@blindedinchains829 So if I get you right, if you measure it, it automatically collapses into one of the right solutions/results? Wow, now I am interested in how this works exactly. What's behind there? Just as if quants could do mathematics. But I guess that is, where the complexity of this topic is, right? :)
Your Waifu Sucks
Your Waifu Sucks Vor 5 years
Your computer can compute everything at the same time.
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