What is Quantum Computing?
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- Опубликовано: 16 сен 2024
- Learn more about Quantum Computing → ibm.biz/BdPFBu
What is a Quantum Computer? How is it different from traditional computing? In this video Jessie Yu explains the five key elements of a quantum computer and the implications for quantum computing.
Stay tuned for future videos on quantum computing coming shortly! Thank you to all of you who suggested videos on quantum computing.
Thank you to everyone who suggested Quantum Computing as a topic!
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Loved the simplicity and clarity of the explanation. Enough to convey basic info and leave viewers with both insight and questions. Hopefully there will be more to come.
How to identify good quantum videos : confusion increases over time 💥
So this is a good intro video or are you trying to say this is a rubbish explanation 😂
@@foxxwip7939 def a good explanation lol, BUT def need more info on my end
My brain was sending SOS signal after the 4th minute
Ikr, the moment she introduces alien jargons such as 'super position' , 'entanglement', etc everything just went swooosshh over my head.
Quantum computing is the new moon travel of the 3rd millinuum. First get us the money you stole on space research then steal us again
What a great recap of what I took Nine months to learn at school.
And it revive my passion for quantum computing.
Thanks for this amazing video.
Great discussion by someone who clearly knows what she is talking about and not just repeating things you hear over and over.
Great video, requested a video on QC a couple of weeks ago and I'm glad to see one. Thank you so much! Looking forward to a series on Quantum computing. Adding a little history, how it evolved and where are we now and the future, will be amazing.
More of this kind of education for Quantum computing! Thanks.
No prior knowledge of quantum computing and I was able to grap this concept exceptionally well, thank you.
After watching this, I don't know what bothers me the most: the fact that I didn't understand most of it or the fact that everybody seems to understand it quite well. 🤤
I doubt they do, my friend. I don't. Richard Feynman said, "If you think you understand quantum mechanics, you don't understand quantum mechanics," and he's the one who first tried to invent a computer to do this stuff. I'm still looking for someone who can explain just how the entanglement is achieved.
Most people are horrible teachers. What she left is out is a ton of context that her brain assumed was common knowledge. A good teacher recognizes the context needed and summarizes it during the lesson as well.
@MichaelWerneburg precisely. This video reminded me of the "Underwear knomes" in South Park. Their brilliant plan was a three step process. 1. Steal underwear. 2. ??? 3. Profit. Thats how this video went for me 1. H Gate. 2. Super Position. 3. Measurement. 4. ??? 5. Entanglement 6. It's faster.
Great video. Perfect explanation. Thank you for making this freely accessible.
Wow! Excellent explanation to a complex topic! Yes, now we must work hard for everything to catchup. We will get there soon 😃!
*RUclips* : So how hard is it gonna be to find someone to explain quantum computing while writing backwards with left hand ?
*IBM* : yes
I am learning QC from Qiskit, it's been difficult. Thank you for this. It's a great map for the whole thing. Although the algorithms like DJ, Shor, Grover etc are BRUTAL!
Everyone in the comments is like, Wow great video! Perfectly clear explanation! And I'm like, wtf did I just watch?
Quantum computing is an advanced computing technology that leverages the principles of quantum mechanics to perform complex calculations at unprecedented speeds. Unlike classical computers that use bits to represent information as either 0s or 1s, quantum computers use quantum bits or qubits. Qubits can exist in multiple states simultaneously, thanks to a phenomenon called superposition. This unique property allows quantum computers to process massive amounts of data and solve highly complex problems much faster than classical computers. Quantum computing has the potential to revolutionize various industries, including cryptography, drug discovery, optimization, artificial intelligence, and scientific research. It's an exciting and rapidly evolving field with immense possibilities for the future of computing.
This is good video but is for the advanced person who know the concept of Quantum Computing. You need to also explain in terms of bits and byte. Example like a byte consists of 8 adjacent binary digits (bits), each of which consists of a 0 or 1 and in Quantum Computing that 0 or 1 is combined together as one but give two binary digits can be 2 results and not either or. If you can show the calculations and how Quantum Computing calculates in terms of binary number system will help understand how this process is faster that conventional computing.
This video didn't really explain anything. Just some definitions. How does a work gate? How do you entangle qbits? How do you set up interference?...
Teaching is revealing, hence whole bunch of mumbo jumbo descriptions.
Smart lady, because she can explain it to people like me. 👍
Thanks for the video! People have a hard time to get their head around the idea of superposition - me included. After some time i came to realization that what scientists call a "superposition" is in fact immensely fast oscillation (switching of states between 0 and 1) of physical particle which embodies the qubit abstraction properties. This would also support the fact that when a qubit is read - it is always 0 or 1 - because a "snapshot" in time is taken of the qubit state. Scientists call this the "collapse" of state to either 0 or 1. I have also read that this qubit abstraction could be represented in real world by several different types of particles. So a Hadamard gate would be a piece of hardware that would put this particle into an oscillatory state? If anyone could clarify this to me. Also i would be immensely interested to know how Gates work, how would be possible to encode a typical classic information theory problem into the qubit world and use the construction of quantum circuits to solve it. Also some physics how it is possible to entangle 2 particles that maintains their coherence. How interference work. So some ideas for next video topic maybe? Thank you.
The fact that measurement affects superposition so only one state is observed, is an example of the Uncertainty Principle. If you are familiar with Shannon's Information Theory, this provides information that directly relates to computers.
Maybe that's what superposition is in a quantum computer, I don't know enough about them, but you should know that real quantum systems really are in multiple states at once. It's not "an immensely fast oscillation". And there's plenty of videos that exist on youtube explaining entanglement.
I wish I understood 0.1 % of what you said 😃
@@Sunnyangusyoung if you imagine watching a video of a lightbulb very quickly flickering on and off, you could say that it's both on and off at roughly the same time, but as soon as you pause that video, it will stop switching on and off, and will only be on, or only be off. this is what the commenter is claiming happens to particles when in a superposition. a hadamard gate is a machine that takes a particle in one state, and puts in a superposition between two states. the commenter wants you to think of this as unpausing the video of the flickering lightbulb.
I have a feeling that you're on to something here buddy.
It could indeed be that the 'quantum' terminology is more about a way of looking at & labelling things, a different approach to getting a computer to 'think'. But not some fundamental new technology as such - still dipped dyes, still silicon-based).
Wonderful for this video. this is very simple to learn about Quantum Computing and explanation about QC is very nice. thank you for your explanation..
Very interesting video, kutunggu perkembangan teknologinya :))
The way i think about quantum systems is that they have a probability of being in each of the possible (eigen) state before you observe them.
The analogy i use is that of a flipping coin in air, that has equal probability of being in two state, but once you observe it, you only find head or tail.
Now my question is whether the system is oscillating between multiple states and probability of being in a state reflects the fraction of time the system remains in that state, given a big chunk of time
Or is it something completely different, something we cannot really pin down in classical terms?
I want to learn more about this, and encourage students interested in computers and software to give Quantum Computing a consideration. Were I studying for computers today, it would be Quantum Computing.
Is there an introduction to the block diagram of a quantum computer? With the regular computer you have the CPU, memory, I/O. The CPU has its components. (registers, cache) etc. What’a that analog for quantum computers?
Great video with simple explanation on quantum computers.
Excellent. And now explain in detail why QC does not work.
Love how accessible this was. Thank uou!
it would be very interesting so see a real computational example
I think you just writing this comment would blow your mind how that works.
Fantastic video - very simple and easy to understand. Just a question - when you talk about entanglement; to what extent can entanglement be controlled? I assume most of it happens by default.
My understanding of Quantum is that once you measure it, it would become a 0 or 1. How can you measure it when it is is in superposition?
Basic but clear message ... nevertheless, there are some assumptions and some details that need to be considered ... like optics, uncertain principle and magnetic momentum ... let's say that this is only the small surface of the iceberg
so is this qbit thing analog during computation and becomes binary when measured? if that the case then how do we even measure the value? like are we supposed to have a train of calculations and the result will turn to a 1 on a specific value in a lookup table or something like that? im so confused
Was thinking about taking a quantum algorithms class but idk if I wanna deal with linear algebra anymore. I had a terrible professor and that class was brutal. And then I couldn't fall asleep the night before my final so I ended up with the lowest score in my class. Still somehow passed with a B (should've been an A but the education system is so flawed that one bad night of sleep before an important exam can apparently screw you over by a whole letter grade) but I don't even wanna look at another matrix anymore 😭
I don't understand. In order to get the correct answer, you have to already know what the answer is?
On a scale of 1 - 10 when is the best time to upgrade to a quantum CPU?
I have a question. The way the zeros and ones are formed is by the presence or absence of the electron in the transistor right? So how do the quantum computers form the super-position physically?
You shouldn't really think about it man, because it's going to evolve and evolve and evolve
I love this explanation.. wow fascinating!!
Very interesting video! Understood it perfectly!
Thank you for this lecture. It's simple and intuitive.
If the outcome needs to be manipulated to correctly identify the qubit. What is the adjusted ratio from 50/50? 80/20? and how do you know the response is accurate, even if the correct answerer ratio is 95/5?
Great teaching.👍👍👌Super
I known that entanglement means that if I measure one particle and I get 1 so I'm sure that also the other particle is 1, but it is not possible to change a state of the first particle then get the same intentional state on the second one. I understand wrong?
Could one of you folks who understood this please explain how entanglement is achieved. It felt like 10 minutes of the video was edited out.
Hello ..I want pursue a career in quantum computing what should I do
I didn't understand anything, still asking if the intrinsic assignment is floating, although it can lead to multiple different outputs, won't it still make the process slow?
A stupid question I have(sorry).
I'm interested in theoretical-side of QC(algo, encryption,...), and I don't know if it's better to study "Math/App-Math" or "Physics" for undergrad?
make a sample comparison between quantum computer vs classical digital computer
starting from
smallest building block
bits
regester
CPU
Clock
memory
operating system
program language
sample
test progress say python
to understand
Where's we are how thing's work vs how quantum computer carries out each step
Regards
Kamran
If we want to amplify the correct answer we have to know the correct answer. How does the system know which is the correct answer. Or am I just not understanding something?
I didn’t really get how interferance works. How is possible to force the sytem to provide you only the correct answer? How amplification works with gates in order to provide only the correct outputs?
Thank you this was amazing
5:24 how could we know the correct answer if they are equiprobable ?
As quantum computers progress, they may break conventional encryption systems, necessitating the development of new security procedures to protect sensitive data from breaches.
Why is everyone saying thank you, like they actually understood what she is saying
Bot farm replies lol
Confusion. I think people need to understand how the "classical" computer is getting slower and slower to improve confidentiality, integratey and availability. For example, the number 8 is verified by the binary code with a check bit or the letter H is also verified...
Can quantum computing be seen as a concretized sub-genre of probabilistic computing?
quantum computing becoming stable would change the whole world for sure
If binary is 1s and 0s, and quantum is somewhere between 1 and 0, isn't that like analogue?
I'm not quite sure what you mean by "analogue". In classical computing, bits always have a *fixed* state of *either* 1 or 0. At any point in time, no matter if you "know" the state of the bit or not. In Quantum Computing however a qubit is described by taking any measurand quantity (e.g., in the example with photons, the polarization parallel and perpendicular to the optical axis of a birefringent crystal) and calling the corresponding eigenstates | 0 ⟩ and | 1 ⟩. (The notation | ... ⟩ is used to indicate that it is a quantum state, aka Dirac notation). The principle of quantum superposition now demands that there are infinitely many states of this system, which can be formally described as | ψ ⟩ = a | 0 ⟩ + b | 1 ⟩ (aka as a linear combination of a | 0 ⟩ and b | 1 ⟩ with a and b being complex numbers and probability amplitudes).
Thus, a qubit can have the general state of a coherent superposition of both. To accurately describe these states between 1 and 0, one uses the bloch sphere. The "north pole" and "south pole" of that sphere would represent the classical bits, 1 and 0. Putting the state | 1 ⟩ at the "north pole" of the sphere, and if θ and ϕ are the angles of the point in spherical coordinates, the corresponding state is given by the vector | ψ ⟩ = sin ( θ / 2 ) e ^ (- i ϕ / 2) | 0 ⟩ + cos ( θ / 2 ) e ^ (i ϕ / 2) | 1 ⟩ . This sphere is in a way the analogue of the probability interval [0,1] for the classical bit: The points at the edge indicate the possible exact states of the bit (0 or 1), respectively the qubit (in quantum mechanics one also speaks of "pure states"), while the points inside the sphere represent incomplete knowledge about the bit/qubit (in quantum mechanics one speaks here of "mixed states"). The point in the middle represents in both cases total ignorance about the system (for the bit: probability 1/2).
I was thinking the same thing. It mostly seems as though they've put ear rings and lipstick the AC electrical theory pig. How many different ways can you say "Maybe, Maybe Not" (Probability)? I'm sorry, but I'm totally confused with the "Theory"? For me to understand, it just has to spit out a solid "answer".
Hey ;) Nice topic, thx for detailed answers.
To simplify, or put it into a simple words. I imagine it like a freely spinning needle attached to one end. And only two small points in a needles possible positions is considered as 1 or 0. And there's third possibility of middle/both giving equal energy at the moment. Everything else but that is considered as infinite possibilities field. Correct me if I'm wrong or comment if close or far towards metaphor 😅❤️🍀💪🥰
You said QC doesnt use 0 and 1. Why in the all process continué using it? Can You send me good material to study it? Or an excellent reference? Thanks
Are they really good at writing backwards? I’m perplexed by the filming of this
I think a big part of the reason why 'traditional computers' (wow, never thought I'd be saying that) have worked so well and been so useful is because they are based in simple logic that always works the same. So far this QC thing just seems to be a theoretcial construct that doesn't have any practical use. I'm already tired of hearing the whole 'it can be a 0 or it can be a 1' blah blah blah. Give me some kind of an example where a quantum computer computed something that actually made sense or gave a useful output.
It has apparently solved a few obscure math problems that no one really cared about
this makes sense.
How to find this course pls
Hey I got a stupid question can't a qbit have more than 2 two states ?
I mean the quantum chips today have a really small number of qbits, if we could assign greater value to them we could perform a greater number of computations on a smaller chip.
After every time i listen to anyone talk about quantum computing I feel like Ive been knocked on the back of my head, went into a coma, then a cryogenic chamber for 3000 years, and then woke up to a civilization 3 society
It is essentially a mechanistic equivalent of a statistical algorithm.
U the best
I would love to know what system are you using to do the presentation? Is it video effects or an actual presentation system.
Search on "lightboard videos"
@@IBMTechnology I just have a question after you guys developed the quantum computer, are you guys use it to hack my account?
Hola, como puedo verlo en español, o algún documento en ingles para poder traducirlo. Gracias!
It's interesting.
how is this usefull if everytime you hit result it give an answer that you just can't simple know which state of each bit are, and how can you get right answer if it change everytime you hit result. please I watch all your clip , not one you mention that. @@
to be honest i came here to find answer to my question on understanding how quantum computing works. but im leaving with more confusion and questions(( i think my level of life experience is not yet enough to comprehend this
All I can think of is the song well be singing when quantum mechanics is proven wrong as Einstein always claimed “I gave a second chance to Qubits, now I’m left here feel in stupid” 🎶 🎼 💘
Why the name quantum...is it inspired by qunatum physics concepts or is it just a misnomer.
When she said that sending people to the moon technology is inferior to today's cell phone, I was like gtfoh
my chip and computer values true zero at .33 or-33. the as it continues these become less probable true value numbers . because of the 3rd dimension, they are inerpreted by new values rather than those calculated on say a 2 dimnensional paper or depiction of a 1st dimension with more than 49 laws of physics or say less even in the say 9th dimesion etc.
I didnt understand the 'entaglement' bit at the end.
she talks about "correct" and "incorrect" answers, but what does it mean? are not all answers equally valid? how is this interference mechanism discriminating between correct and incorrect answers? 🤷♂️
I want to see a computer that can feel regret. Understand it's mistakes. Not just one that powers under 1001.
This is just like the E.T that abducted me and trying to explain to me the meaning of the universe.
Remember quantum computers won't replace classical ones. They're for the lab.
This lady is cripplingly smart
I wonder what this would mean for cryptocurrency?
But you miss something that excites the superposition
probably a dumb question BUT are you writing everything in reverse so VIEWERS can read them correctly?
See ibm.biz/write-backwards
@@IBMTechnology thank you 😊 🙏🏻
All this quantum science stuff is great but I’m more focused on how she can write backwards like it’s normal for her lol 😂
Its mirrored
Об интеллектуальных поисках квантовых компьютерщиков при помощи Сферы Блоха.
На мой арифметически простой взгляд, Сфера Блоха - это *не* физический объект. Можно сказать, что это условное вспомогательное мнемоническое представление о характере взаимодействия физических объектов. Природа не оперирует в соответствии с подобными трансцендентными представлениями. Поэтому на их основе невозможно строить логически правильные умозаключения о практической реализации этих представлений.
14.09.2024.
Yea, nice try. But I didn't get it. Still dont understand why all these possibilities makes it faster.
Does quantum computer can predict my future
in short quantum computing is a much faster way do computations ,
Why can’t you just program a normal computer to do the things a quantum computer is meant to do?
You can, but it will be far too slow
Technologies development,if someone can use quantum computer, your account and bank password well no longer be safe,using quantum computer. It could easily hack into all the things in the world.
My favorite quote from every teacher, "our cellphones are more powerful then what we used to send Man to the Moon."
The coming great Paradigm shift in computing, machines, and life: quantum computing.
It will also lead to self validating "BitCoin" that replaces money as we know it.
What was...dies....Spock would be proud, LOL.
"We're not in Kansas anymore..." (Dorothy to Toto from the "Wizard of Oz".).
Williams Donald Rodriguez Deborah Garcia Deborah
This made zero since to me...until she used algebra. 8th Grade really helps.
UFO’s might be using more advanced quantum computers.
Anti gravity tech
Very tough actually
Global Health
I want to work for you.
Shit I don’t even know what she’s talking at the beginning about the definition
still wont be able to cure cancer though
What did i just watch